How long is the flight from London to Washington, D.C.?

For as low as £397, United Airlines can have you in Washington, D.C. from London in 13h 49m. The distance from London to Washington, D.C. is about 3670 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

What are the cheapest airlines flying from London to Washington, D.C. round-trip?

According to our current data, Delta (£185), PLAY (£241), and Icelandair (£341) offers the cheapest pricing from London to Washington, D.C.. Users have found that Delta is 65% cheaper than the other options available to this destination.

What are the cheapest airlines to fly from London to Washington, D.C. one-way?

For one-way options, check prices for TAP AIR PORTUGAL. According to our data, you can fly for as low as £379. Users have also found prices from £380 and £390 on Icelandair and Aer Lingus, respectively.

In terms of precipitation, rainfall in Washington, D.C. ranges from 66.0 - 102.0 inches per month. May is typically the wettest month, when rainfall can reach 102.0 mm. February is typically the driest time to visit Washington, D.C. when rainfall is around 66.0 mm.

If weather is an important factor for your trip to Washington, D.C., use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 27.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 2.0 C).

What are the most popular routes from London to Washington, D.C.?

When deciding which route to take from London to Washington, D.C. consider London Heathrow - Washington, D.C. Dulles Intl, London Heathrow - Baltimore/Washington or London Gatwick - Washington, D.C. Dulles Intl as they are the most popular.

What are the cheapest flights from London to Washington, D.C.?

While on average a flight from London to Washington, D.C. is generally £1,276, our data shows the cheapest flight currently is £382. When looking at the most popular route, (London Heathrow - Washington, D.C. Dulles Intl), you can expect to pay £322 for that flight.

What are the most reliable airlines from London to Washington, D.C.?

Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from London to Washington, D.C. on time: KLM (90%), Air France (90%), Delta (90%).

What are the most popular airlines that fly from London to Washington, D.C.?

Before booking your flight from London to Washington, D.C. check out the most popular airlines for this route: American Airlines, Air Canada or Air France.

Where are the most common stopover locations when flying from London to Washington, D.C.?

Most of the time, London to Washington, D.C. flights that have stopovers will stop in Reykjavik.

Where are the least popular stopover locations for London to Washington, D.C. flights?

Flights departing from London and landing in Washington, D.C. stopover in Dublin least frequently.

What are some popular things to do or see while on a stopover in Reykjavik?

If you're on a stopover in Reykjavik and looking for things to do, consider visiting Harpa, National Cathedral, or Reykjavik Free Church. Travelers on a layover in Reykjavik can visit Harpa, National Cathedral, and Reykjavik Free Church, by traveling 23.3 mi, 23.0 mi, and 22.9 mi, respectively after landing at Reykjavik Keflavik Intl. Travellers can book a car hire at Reykjavik Keflavik Intl for about £38 per day to make their sightseeing more efficient.

Can I find deals for flights from London to Washington, D.C. that include hotel bookings?

Yes. In addition to deals on London to Washington, D.C. flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from London to Washington, D.C.?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Washington, D.C..

Can I find deals for business class flights from London to Washington, D.C.?

Yes. Cheapflights offers flight deals from London to Washington, D.C. by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£314+ Cheap Flights from London to Washington, D.C.

Q: How much does it cost for a return flight from London to Washington, D.C.?

Airfare is below average for this route at the moment. London to Washington, D.C. flights typically cost between £411 and £572 in October. The cheapest return flight price found within the last 3 days was £386 on Multiple Airlines (9 Oct-12 Oct).

Cheapflights Tip: The best prices from London to Washington, D.C. are usually found in February or November, booked 84 days in advance, depart on a Wednesday or Thursday and return on a Wednesday

Cheap flight deals from London to Washington, D.C.

Round-trip from	£386
One-way from	£314
Popular in	July
Cheapest in	February
Average price	£488
Good round-trip deal	£467 or less
Good one-way deal	£468 or less

9/10-12/10
2 total stops
49h 57m total
London to Washington, D.C.

Search Deals

2/11
2 total stops
40h 13m total
London to Washington, D.C.

Search Deals

Highest demand for flights based on searches. 10% potential increase in price (£48 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£8 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 2025

Search Deals

Price to beat on a round-trip flight from London (LON) to Washington, D.C. (WAS).

Search Deals

Price to beat on a one-way flight from London (LON) to Washington, D.C. (WAS).

Search Deals

Find flight deals from London to Washington, D.C.

Cheapest flights from London to Washington, D.C.
Explore the most affordable flight options available from London to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 September 2025.

Thu 9/1014:00LGW - BWI

1 stop27h 40mMultiple Airlines

Sun 12/1006:53BWI - LGW

1 stop22h 17mMultiple Airlines

Deal found 16/9£386

Thu 6/1114:00LGW - BWI

1 stop23h 50mMultiple Airlines

Wed 12/1106:45BWI - LGW

3 stops27h 20mMultiple Airlines

Deal found 16/9£388

Thu 9/1014:00LGW - BWI

1 stop27h 40mMultiple Airlines

Mon 13/1021:41BWI - LGW

1 stop31h 19mMultiple Airlines

Deal found 17/9£390

Wed 1/1014:00LGW - BWI

1 stop34h 47mMultiple Airlines

Sat 4/1021:39BWI - LGW

1 stop31h 31mMultiple Airlines

Deal found 17/9£391

Thu 25/908:40LHR - IAD

1 stop12h 35mUnited Airlines

Thu 2/1018:40IAD - LHR

Nonstop7h 15mUnited Airlines

Deal found 16/9£391

Thu 2/1006:50LHR - IAD

2 stops14h 20mAir Canada

Mon 6/1015:36IAD - LHR

1 stop11h 59mAir Canada

Deal found 17/9£392

Thu 23/1008:45LTN - IAD

1 stop15h 10mMultiple Airlines

Sun 26/1018:05IAD - LTN

1 stop10h 50mMultiple Airlines

Deal found 17/9£392

Thu 13/1121:20STN - IAD

2 stops26h 10mMultiple Airlines

Sun 30/1119:40IAD - STN

2 stops20h 15mMultiple Airlines

Deal found 16/9£392

Mon 27/1020:25LHR - DCA

2 stops30h 34mVirgin Atlantic

Fri 7/1119:35DCA - LHR

2 stops31h 15mVirgin Atlantic

Deal found 15/9£392

Thu 25/908:40LHR - IAD

1 stop12h 35mUnited Airlines

Sun 28/918:40IAD - LHR

Nonstop7h 15mUnited Airlines

Deal found 17/9£393

Sun 7/1210:40LGW - IAD

1 stop15h 20mTAP AIR PORTUGAL

Sun 14/1222:30IAD - LGW

1 stop12h 15mTAP AIR PORTUGAL

Deal found 17/9£393

Thu 2/1009:55LHR - DCA

2 stops17h 16mVirgin Atlantic

Sun 19/1020:40DCA - LHR

1 stop29h 05mVirgin Atlantic

Deal found 16/9£393

Best flights from London to Washington, D.C.
Discover carefully curated flight deals from London to Washington, D.C. that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 18 September 2025.

Tue 14/1014:00LGW - BWI

1 stop27h 40mMultiple Airlines

Wed 22/1008:00BWI - LGW

1 stop21h 00mMultiple Airlines

Deal found 17/9£386

Thu 13/1113:45LHR - IAD

1 stop31h 55mUnited Airlines

Fri 21/1106:00IAD - LHR

2 stops20h 10mUnited Airlines

Deal found 16/9£391

Sun 11/120:35LHR - IAD

1 stop26h 55mIcelandair

Sat 17/119:40IAD - LHR

1 stop10h 10mIcelandair

Deal found 17/9£392

Mon 2/314:50LHR - IAD

1 stop28h 50mAustrian Airlines

Tue 10/323:15IAD - LHR

Nonstop7h 35mAustrian Airlines

Deal found 15/9£393

Tue 7/1012:10LGW - DCA

1 stop13h 49mJetBlue

Wed 15/1016:39DCA - LGW

1 stop11h 56mJetBlue

Deal found 17/9£397

Sat 10/113:10LHR - DCA

1 stop11h 49mBritish Airways

Sat 17/115:59DCA - LHR

1 stop9h 36mBritish Airways

Deal found 17/9£407

Thu 13/1119:10LCY - IAD

1 stop25h 20mSWISS

Mon 17/1117:25IAD - LCY

1 stop14h 25mSWISS

Deal found 15/9£410

Tue 3/313:25LHR - DCA

1 stop13h 31mAir Canada

Mon 9/316:10DCA - LHR

1 stop11h 00mAir Canada

Deal found 15/9£418

Mon 20/1012:55LHR - DCA

1 stop15h 09mVirgin Atlantic

Mon 10/1118:18DCA - LHR

1 stop12h 22mVirgin Atlantic

Deal found 17/9£435

Fri 31/1008:40LCY - IAD

1 stop12h 25mKLM

Wed 5/1118:05IAD - LCY

1 stop9h 45mKLM

Deal found 15/9£453

Tue 25/1121:20LGW - IAD

2 stops28h 40mTAP AIR PORTUGAL

Sun 30/1122:30IAD - LGW

1 stop12h 15mTAP AIR PORTUGAL

Deal found 17/9£472

Thu 9/1014:00LGW - BWI

1 stop27h 40mMultiple Airlines

Mon 13/1021:41BWI - LGW

1 stop31h 19mMultiple Airlines

Deal found 17/9£390

Sun 1/209:00LHR - IAD

1 stop12h 40mUnited Airlines

Mon 9/222:15IAD - LHR

Nonstop7h 35mUnited Airlines

Deal found 16/9£391

Wed 5/1114:50LHR - IAD

1 stop28h 50mAustrian Airlines

Wed 12/1118:20IAD - LHR

Nonstop7h 20mAustrian Airlines

Deal found 17/9£395

Thu 2/1015:40LGW - IAD

1 stop32h 40mIcelandair

Tue 7/1020:30IAD - LGW

1 stop13h 10mIcelandair

Deal found 17/9£404

Fri 31/1019:20LCY - IAD

1 stop24h 15mSWISS

Fri 7/1117:25IAD - LCY

1 stop13h 15mSWISS

Deal found 16/9£411

Wed 1/1012:10LGW - DCA

1 stop13h 45mJetBlue

Wed 15/1012:56DCA - LGW

1 stop15h 39mJetBlue

Deal found 16/9£421

Sun 8/313:10LHR - DCA

1 stop10h 50mBritish Airways

Tue 17/306:00DCA - LHR

1 stop10h 00mBritish Airways

Deal found 16/9£422

Wed 1/1009:30LHR - DCA

2 stops13h 34mAir Canada

Sun 5/1016:35DCA - LHR

1 stop12h 00mAir Canada

Deal found 17/9£424

Fri 28/1109:00LHR - IAD

1 stop12h 40mUnited Airlines

Fri 12/1206:00IAD - LHR

2 stops20h 10mUnited Airlines

Deal found 16/9£391

Thu 13/1121:20STN - IAD

2 stops26h 10mMultiple Airlines

Sun 30/1119:40IAD - STN

2 stops20h 15mMultiple Airlines

Deal found 16/9£392

Fri 3/1015:40LGW - IAD

1 stop11h 30mIcelandair

Sun 5/1023:15IAD - LGW

1 stop10h 25mIcelandair

Deal found 17/9£407

Thu 6/1110:00LCY - IAD

1 stop11h 05mVirgin Atlantic

Wed 12/1112:11IAD - LCY

2 stops15h 39mVirgin Atlantic

Deal found 15/9£454

Tue 3/212:55LHR - DCA

1 stop11h 19mBritish Airways

Mon 9/217:49DCA - LHR

1 stop9h 21mBritish Airways

Deal found 17/9£424

Fri 3/1019:30LCY - IAD

1 stop25h 45mSWISS

Mon 6/1020:45IAD - LCY

1 stop10h 45mSWISS

Deal found 15/9£426

Thu 4/1210:10LGW - IAD

2 stops39h 50mTAP AIR PORTUGAL

Sun 14/1222:30IAD - LGW

1 stop12h 15mTAP AIR PORTUGAL

Deal found 16/9£474

Fri 14/1109:00LHR - IAD

1 stop12h 40mUnited Airlines

Mon 17/1108:30IAD - LHR

2 stops17h 40mUnited Airlines

Deal found 17/9£393

Tue 25/1109:00LHR - IAD

1 stop12h 40mMultiple Airlines

Sun 30/1122:15IAD - LHR

Nonstop7h 35mMultiple Airlines

Deal found 17/9£393

Wed 15/1012:10LGW - DCA

1 stop13h 49mJetBlue

Wed 22/1018:55DCA - LGW

1 stop9h 40mJetBlue

Deal found 16/9£453

Thu 30/1010:00LCY - IAD

1 stop11h 05mVirgin Atlantic

Wed 12/1112:11IAD - LCY

2 stops14h 04mVirgin Atlantic

Deal found 15/9£454

Direct flights from London to Washington, D.C.
Explore direct flight options from London to Washington, D.C. based on user searches, and compare prices and availability for your desired travel dates. Data last updated 18 September 2025.

Sat 1/1112:05LHR - IAD

Nonstop8h 30mLufthansa

Sat 8/1118:20IAD - LHR

Nonstop7h 20mLufthansa

Deal found 17/9£398

Thu 6/1112:10LHR - IAD

Nonstop8h 25mBritish Airways

Wed 12/1118:20IAD - LHR

Nonstop7h 10mBritish Airways

Deal found 16/9£399

Thu 20/1112:10LHR - IAD

Nonstop8h 25mBritish Airways

Sat 6/1218:20IAD - LHR

Nonstop7h 10mBritish Airways

Deal found 16/9£401

Thu 25/912:35LHR - IAD

Nonstop8h 25mVirgin Atlantic

Thu 2/1017:50IAD - LHR

Nonstop7h 30mVirgin Atlantic

Deal found 16/9£402

Thu 6/1112:10LHR - IAD

Nonstop8h 25mBritish Airways

Mon 10/1118:20IAD - LHR

Nonstop7h 10mBritish Airways

Deal found 17/9£402

Fri 14/1116:25LHR - IAD

Nonstop8h 30mBritish Airways

Mon 17/1118:20IAD - LHR

Nonstop7h 10mBritish Airways

Deal found 17/9£403

Wed 3/1215:25LHR - BWI

Nonstop8h 20mBritish Airways

Thu 11/1220:35BWI - LHR

Nonstop7h 05mBritish Airways

Deal found 17/9£403

Wed 1/1012:35LHR - IAD

Nonstop8h 25mVirgin Atlantic

Tue 7/1017:50IAD - LHR

Nonstop7h 30mVirgin Atlantic

Deal found 17/9£404

Thu 2/1012:35LHR - IAD

Nonstop8h 25mVirgin Atlantic

Sun 19/1018:45IAD - LHR

Nonstop7h 30mVirgin Atlantic

Deal found 16/9£409

Tue 23/917:00LHR - IAD

Nonstop8h 10mBritish Airways

Tue 30/922:45IAD - LHR

Nonstop7h 20mBritish Airways

Deal found 16/9£410

Tue 25/1112:10LHR - IAD

Nonstop8h 25mBritish Airways

Sun 30/1118:20IAD - LHR

Nonstop7h 10mBritish Airways

Deal found 17/9£410

Thu 6/1116:20LHR - IAD

Nonstop8h 55mUnited Airlines

Wed 12/1122:15IAD - LHR

Nonstop7h 35mUnited Airlines

Deal found 17/9£412

Last-minute flights from London to Washington, D.C.
Discover last-minute flight deals from London to Washington, D.C.. Data last updated 18 September 2025 and is based on user searches.

Mon 22/910:00LGW - BWI

1 stop18h 37mMultiple Airlines

Sat 4/1021:39BWI - LGW

1 stop31h 31mMultiple Airlines

Deal found 15/9£393

Tue 23/915:05LHR - IAD

1 stop28h 30mUnited Airlines

Tue 30/912:35IAD - LHR

1 stop12h 20mUnited Airlines

Deal found 16/9£393

Thu 25/908:40LHR - IAD

1 stop12h 35mUnited Airlines

Tue 30/918:40IAD - LHR

Nonstop7h 15mUnited Airlines

Deal found 16/9£391

Thu 25/908:40LHR - IAD

1 stop12h 35mUnited Airlines

Wed 1/1013:00IAD - LHR

1 stop12h 30mUnited Airlines

Deal found 17/9£393

Wed 1/1014:00LGW - BWI

1 stop34h 47mMultiple Airlines

Sat 4/1021:39BWI - LGW

1 stop31h 31mMultiple Airlines

Deal found 17/9£391

Thu 2/1006:00LHR - IAD

1 stop13h 35mAustrian Airlines

Mon 6/1018:40IAD - LHR

Nonstop7h 15mAustrian Airlines

Deal found 15/9£392

Thu 2/1009:55LHR - DCA

2 stops17h 16mVirgin Atlantic

Sun 19/1020:40DCA - LHR

1 stop29h 05mVirgin Atlantic

Deal found 16/9£393

Thu 2/1009:30LHR - IAD

1 stop11h 20mUnited Airlines

Sun 7/1222:15IAD - LHR

Nonstop7h 35mUnited Airlines

Deal found 14/9£394

Thu 9/1014:00LGW - BWI

1 stop27h 40mMultiple Airlines

Sun 12/1006:53BWI - LGW

1 stop22h 17mMultiple Airlines

Deal found 16/9£386

Thu 9/1014:00LGW - BWI

1 stop27h 40mMultiple Airlines

Mon 13/1021:41BWI - LGW

1 stop31h 19mMultiple Airlines

Deal found 17/9£390

Thu 23/1008:45LTN - IAD

1 stop15h 10mMultiple Airlines

Sun 26/1018:05IAD - LTN

1 stop10h 50mMultiple Airlines

Deal found 17/9£392

Mon 27/1020:25LHR - DCA

2 stops30h 34mVirgin Atlantic

Fri 7/1119:35DCA - LHR

2 stops31h 15mVirgin Atlantic

Deal found 15/9£392

One-way flights from London to Washington, D.C.
Search for one-way flight options from London to Washington, D.C.. Find affordable one-way fares based on user searches. Data last updated 18 September 2025.

Sun 2/1113:00LGW - BWI

2 stops40h 13mMultiple Airlines

Deal found 17/9£314

Sat 18/1020:20LGW - BWI

2 stops50h 20mMultiple Airlines

Deal found 16/9£317

Sun 21/914:00LGW - BWI

1 stop34h 47mMultiple Airlines

Deal found 16/9£318

Thu 2/1014:00LGW - BWI

2 stops26h 00mMultiple Airlines

Deal found 16/9£319

Mon 6/1020:50LHR - BWI

3 stops49h 50mMultiple Airlines

Deal found 17/9£320

Thu 9/1008:00LGW - BWI

2 stops14h 40mMultiple Airlines

Deal found 17/9£320

Wed 22/1021:25LHR - BWI

1 stop25h 15mMultiple Airlines

Deal found 16/9£321

Wed 1/1014:00LGW - BWI

1 stop30h 32mMultiple Airlines

Deal found 16/9£321

Fri 26/914:00LGW - BWI

2 stops29h 47mMultiple Airlines

Deal found 16/9£322

Mon 22/914:00LGW - BWI

3 stops34h 07mMultiple Airlines

Deal found 17/9£323

Mon 6/1014:00LGW - BWI

2 stops26h 01mMultiple Airlines

Deal found 17/9£325

Tue 4/1113:00LGW - BWI

2 stops34h 29mMultiple Airlines

Deal found 17/9£327

Cheapflights Fare Finder

Use the filters below to find and compare flights from London to Washington, D.C. that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonBaltimore

LGW - BWI

LGWBWI

London Gatwick

Tue 14/10

14:00-12:40

1 stop27h 40m

Baltimore/Washington

Wed 22/10

08:00-10:00

1 stop21h 00m

£386

LondonBaltimore

LGW - BWI

LGWBWI

London Gatwick

Thu 9/10

14:00-12:40

1 stop27h 40m

Baltimore/Washington

Mon 13/10

21:41-10:00

1 stop31h 19m

£390

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Thu 13/11

13:45-16:40

1 stop31h 55m

Washington, D.C. Dulles Intl

Fri 21/11

06:00-07:10

2 stops20h 10m

£391

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Sun 1/2

09:00-16:40

1 stop12h 40m

Washington, D.C. Dulles Intl

Mon 9/2

22:15-10:50

Nonstop7h 35m

£391

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Fri 28/11

09:00-16:40

1 stop12h 40m

Washington, D.C. Dulles Intl

Fri 12/12

06:00-07:10

2 stops20h 10m

£391

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Sun 11/1

20:35-18:30

1 stop26h 55m

Washington, D.C. Dulles Intl

Sat 17/1

19:40-10:50

1 stop10h 10m

£392

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Thu 13/11

21:20-18:30

2 stops26h 10m

Washington, D.C. Dulles Intl

Sun 30/11

19:40-20:55

2 stops20h 15m

£392

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Fri 14/11

09:00-16:40

1 stop12h 40m

Washington, D.C. Dulles Intl

Mon 17/11

08:30-07:10

2 stops17h 40m

£393

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Tue 25/11

09:00-16:40

1 stop12h 40m

Washington, D.C. Dulles Intl

Sun 30/11

22:15-10:50

Nonstop7h 35m

£393

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Mon 2/3

14:50-14:40

1 stop28h 50m

Washington, D.C. Dulles Intl

Tue 10/3

23:15-10:50

Nonstop7h 35m

£393

Flights are sorted by cheapest return flights first.

Deals found on 16/9

Showing 1-10 of 60 results

...

Best time to book a flight from London to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from London with our price prediction graph.

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from London to Washington, D.C.

How far ahead should I book a flight from London to Washington, D.C.?

Booking 84 days in advance of your planned departure date is, on average, the best time to get cheap flights from London to Washington, D.C.. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from London to Washington, D.C.?

Currently, January is the cheapest month in which you can book a flight from London to Washington, D.C. (average of £599). Flying from London to Washington, D.C. in July is currently the most expensive (average of £947). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from LON to WAS?

A simple way to save on the total cost of your ticket is to fly from London to Washington, D.C. in the evening. If you’re flexible enough to do this you can expect to save up to 20% on your trip compared to booking a flight in the afternoon.

What is the cheapest day to fly from London to Washington, D.C.?

Travellers seeking maximum savings on their London to Washington, D.C. flight should consider departing on Tuesday evenings when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from London to Washington, D.C.

The most flights from LON to WAS are scheduled on a Monday (28 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (18 on average).

How much does it cost for a return flight from London to Washington, D.C.?

What’s the top stopover airport for flights from London to Washington, D.C.?

Reykjavik (KEF) – chosen by Cheapflights users on 50% of one-stop itineraries from London to Washington, D.C. on Cheapflights.

What’s the cheapest stopover airport for flights from London to Washington, D.C.?

Reykjavik (KEF) is the most affordable one-stop option, with an average return flight price of £289.

What’s the fastest stopover option from London to Washington, D.C.?

Flights via Amsterdam (AMS) have the shortest average one-way travel time for one-stop routes: 10h 32m.

Which airport typically offers the quickest stopover for flights from London to Washington, D.C.?

Flights via New York (JFK) offer the fastest connection on this route, with an average stopover time of 1h 11m.

Reviews of airlines servicing Washington, D.C.

Check out reviews from past customers who have flown with Virgin Atlantic, Icelandair, andPLAY from London to Washington, D.C. to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Virgin Atlantic

7.4

Good

664 reviews

Check prices

Reviews

1 / 20

6.0

Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!

Virgin Atlantic

7.4

Good

664 reviews

Virgin Atlantic

7.4

Good

664 reviews

Check prices

Reviews

1 / 20

6.0

Good

Pratap,Aug 2025

JFK - LHR

Icelandair

7.0

Good

545 reviews

Virgin Atlantic

7.4

Good

664 reviews

Check prices

Reviews

1 / 20

6.0

Good

Pratap,Aug 2025

JFK - LHR

PLAY

7.0

Good

Virgin Atlantic

7.4

Good

664 reviews

Check prices

Reviews

1 / 20

6.0

Good

Pratap,Aug 2025

JFK - LHR

Lufthansa

6.8

Okay

7,409 reviews

Virgin Atlantic

7.4

Good

664 reviews

Check prices

Reviews

1 / 20

6.0

Good

Pratap,Aug 2025

JFK - LHR

British Airways

6.7

Okay

7,367 reviews

Virgin Atlantic

7.4

Good

664 reviews

Check prices

Reviews

1 / 20

6.0

Good

Pratap,Aug 2025

JFK - LHR

Related info for your journey

How long is the flight from London to Washington, D.C.?
For as low as £397, United Airlines can have you in Washington, D.C. from London in 13h 49m. The distance from London to Washington, D.C. is about 3670 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.
What are the cheapest airlines flying from London to Washington, D.C. round-trip?
According to our current data, Delta (£185), PLAY (£241), and Icelandair (£341) offers the cheapest pricing from London to Washington, D.C.. Users have found that Delta is 65% cheaper than the other options available to this destination.
What are the cheapest airlines to fly from London to Washington, D.C. one-way?
For one-way options, check prices for TAP AIR PORTUGAL. According to our data, you can fly for as low as £379. Users have also found prices from £380 and £390 on Icelandair and Aer Lingus, respectively.
What are the most popular routes from London to Washington, D.C.?
When deciding which route to take from London to Washington, D.C. consider London Heathrow - Washington, D.C. Dulles Intl, London Heathrow - Baltimore/Washington or London Gatwick - Washington, D.C. Dulles Intl as they are the most popular.
What are the most reliable airlines from London to Washington, D.C.?
Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from London to Washington, D.C. on time: KLM (90%), Air France (90%), Delta (90%).
What are the cheapest flights from London to Washington, D.C.?
While on average a flight from London to Washington, D.C. is generally £1,276, our data shows the cheapest flight currently is £382. When looking at the most popular route, (London Heathrow - Washington, D.C. Dulles Intl), you can expect to pay £322 for that flight.
Where are the most common stopover locations when flying from London to Washington, D.C.?
Most of the time, London to Washington, D.C. flights that have stopovers will stop in Reykjavik.
What are some popular things to do or see while on a stopover in Reykjavik?
If you're on a stopover in Reykjavik and looking for things to do, consider visiting Harpa, National Cathedral, or Reykjavik Free Church. Travelers on a layover in Reykjavik can visit Harpa, National Cathedral, and Reykjavik Free Church, by traveling 23.3 mi, 23.0 mi, and 22.9 mi, respectively after landing at Reykjavik Keflavik Intl. Travellers can book a car hire at Reykjavik Keflavik Intl for about £38 per day to make their sightseeing more efficient.
Where are the least popular stopover locations for London to Washington, D.C. flights?
Flights departing from London and landing in Washington, D.C. stopover in Dublin least frequently.
Can I find deals for flights from London to Washington, D.C. that include hotel bookings?
Yes. In addition to deals on London to Washington, D.C. flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from London to Washington, D.C.?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Washington, D.C..
Can I find deals for business class flights from London to Washington, D.C.?
Yes. Cheapflights offers flight deals from London to Washington, D.C. by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from London to Washington, D.C.?
Currently, January is the cheapest month in which you can book a flight from London to Washington, D.C. (average of £599). Flying from London to Washington, D.C. in July is currently the most expensive (average of £947). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Silver Spring

Hanover

Oxon Hill

Woodbridge

Arlington

College Park

Tysons

Browse thousands of different options on Cheapflights for your next trip

Direct flights to United States

Other flights to Washington, D.C.

Heathrow to Dulles Intl flights

Heathrow to Baltimore flights

Edinburgh to Dulles Intl flights

Baltimore to Miami flights

Washington, D.C. Dulles Intl Airport to Orlando Airport flights

Baltimore to Las Vegas flights

Baltimore to Orlando Airport flights

Washington, D.C. Dulles Intl Airport to Toronto Pearson Intl Airport flights

Baltimore to Miami flights

Baltimore to Atlanta flights

Baltimore to Las Vegas flights

Washington, D.C. Reagan-National Airport to Los Angeles flights

Baltimore to Fort Lauderdale flights

Baltimore to Los Angeles flights

Washington, D.C. Reagan-National Airport to Boston flights

Washington, D.C. Dulles Intl Airport to Toronto Pearson Intl Airport flights

Washington, D.C. Dulles Intl Airport to Lisbon flights

Washington, D.C. Dulles Intl Airport to Los Angeles flights

Washington, D.C. Dulles Intl Airport to San Francisco flights

Baltimore to Atlanta flights

Washington, D.C. Dulles Intl Airport to Dublin flights

Top 10 airlines flying from London to Washington, D.C.

Airline	Cheapest	Average	Flexibility	On-time
Delta	Cheapest£185	Average£525	FlexibilityNo cancel fee	On-timeN/A	Search Delta flights
PLAY	Cheapest£241	Average£386	FlexibilityNo cancel fee	On-timeN/A	Search PLAY flights
Icelandair	Cheapest£341	Average£494	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
TAP AIR PORTUGAL	Cheapest£347	Average£502	FlexibilityNo cancel fee	On-timeN/A	Search TAP AIR PORTUGAL flights
JetBlue	Cheapest£369	Average£617	FlexibilityNo cancel fee	On-time62%	Search JetBlue flights
Aer Lingus	Cheapest£392	Average£689	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights
United Airlines	Cheapest£392	Average£604	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights
Finnair	Cheapest£427	Average£604	FlexibilityNo cancel fee	On-time76%	Search Finnair flights
Lufthansa	Cheapest£430	Average£613	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
Scandinavian Airlines	Cheapest£430	Average£570	FlexibilityNo cancel fee	On-time77%	Search Scandinavian Airlines flights

Fly with Cheapflights

How does Cheapflights help users find flights from London to Washington, D.C.?

When you search for this flight from London to Washington, D.C., Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

Why should you use Cheapflights to find cheap flight tickets from London to Washington, D.C.?

Cheapflights simply makes it quick and affordable to book flights from London to Washington, D.C. by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from London to Washington, D.C. with no change fees?

Need flexible booking options for your flight to Washington, D.C. from London? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from London to Washington, D.C. become cheaper?

Of course! You can now track prices for flights from London to Washington, D.C. and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.

Cheap flights from London to Washington, D.C. from £314

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/11. Fares are subject to change and may not be available on all flights or dates of travel.

Cheapflights Tip: The best prices from London to Washington, D.C. are usually found in February or November, booked 84 days in advance, depart on a Wednesday or Thursday and return on a Wednesday

Cheap flight deals from London to Washington, D.C.

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Find flight deals from London to Washington, D.C.

Cheapest flights from London to Washington, D.C.Explore the most affordable flight options available from London to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 September 2025.

Explore the most affordable flight options available from London to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 September 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from London to Washington, D.C. that are best for you.

Best time to book a flight from London to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from London with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from London to Washington, D.C.

How far ahead should I book a flight from London to Washington, D.C.?

Use this chart to determine the optimal time to book a return flight from London to Washington, D.C.. Price data was last updated on 12 September 2025.

What is the cheapest month to book a flight from London to Washington, D.C.?

What is the cheapest time of day to fly from LON to WAS?

Find hourly flight availability from London to Washington, D.C.. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 18 September 2025.

What is the cheapest day to fly from London to Washington, D.C.?

Use this chart to determine the cheapest time to fly return from London to Washington, D.C.. Price data was last updated on 16 December 2024.

Weekly flight availability from London to Washington, D.C.

How much does it cost for a return flight from London to Washington, D.C.?

What’s the top stopover airport for flights from London to Washington, D.C.?

Share of one-stop return flights from London to Washington, D.C. chosen by Cheapflights users in the past 12 months, using the same stopover each way.

What’s the cheapest stopover airport for flights from London to Washington, D.C.?

Average return fare for one-stop flights from London to Washington, D.C., chosen by Cheapflights users in the past 12 months, with the same stopover each way.

What’s the fastest stopover option from London to Washington, D.C.?

Shortest average travel time for one-stop one-way flights from London to Washington, D.C., based on itineraries clicked by Cheapflights users over the past 12 months, grouped by stopover airport.

Which airport typically offers the quickest stopover for flights from London to Washington, D.C.?

Average stopover duration for one-stop one-way flights from London to Washington, D.C., chosen by Cheapflights users in the last 12 months, grouped by stopover airport.

Reviews of airlines servicing Washington, D.C.

Check out reviews from past customers who have flown with Virgin Atlantic, Icelandair, andPLAY from London to Washington, D.C. to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from London to Washington, D.C.. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

How long is the flight from London to Washington, D.C.?

What are the cheapest airlines flying from London to Washington, D.C. round-trip?

What are the cheapest airlines to fly from London to Washington, D.C. one-way?

What are the most popular routes from London to Washington, D.C.?

What are the most reliable airlines from London to Washington, D.C.?

What are the cheapest flights from London to Washington, D.C.?

Where are the most common stopover locations when flying from London to Washington, D.C.?

What are some popular things to do or see while on a stopover in Reykjavik?

Where are the least popular stopover locations for London to Washington, D.C. flights?

Can I find deals for flights from London to Washington, D.C. that include hotel bookings?

How can I find direct flights from London to Washington, D.C.?

Can I find deals for business class flights from London to Washington, D.C.?

What is the cheapest month to book a flight from London to Washington, D.C.?

Travelling to a place near Washington, D.C.?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly from London to Washington, D.C. on these airlines

Choose from the following airlines for your flight from London to Washington, D.C.. Flights are based on user searches made on Cheapflights and were last updated on 18 September 2025.

Top 10 airlines flying from London to Washington, D.C.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from London to Washington, D.C.?

Why should you use Cheapflights to find cheap flight tickets from London to Washington, D.C.?

Can Cheapflights find flights from London to Washington, D.C. with no change fees?

Can Cheapflights notify me if prices for flights from London to Washington, D.C. become cheaper?

100% Free

Book with Flexibility

Travel Smart

Cheapest flights from London to Washington, D.C.
Explore the most affordable flight options available from London to Washington, D.C.. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 September 2025.