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

Departing from Washington, D.C. to London will take you 10h 15m. The distance between Washington, D.C. and London is about 3683 mi. Both multi-stop and direct flights can be found to your destination and back.

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

Lufthansa, at £306, was found to be the cheapest airline from Washington, D.C. to London.Alternate airlines flying return to your destination include Icelandair and Virgin Atlantic. These flights start at 43% lower than the current average price 3 months from now.

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

The cheapest airline one-way is TAP AIR PORTUGAL, with whom users have recently found tickets for as low as £203. However, be on the lookout for offers from Scandinavian Airlines and JetBlue, as they are both options that can get you from Washington, D.C. to London for a low price.

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

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

In terms of precipitation, rainfall in London ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London when rainfall is around 40.0 mm.

If weather is an important factor for your trip to London, 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 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

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

The most popular route from Washington, D.C. to London is Washington, D.C. Dulles Intl - London Heathrow. You may also consider Baltimore/Washington - London Heathrow or Washington, D.C. Dulles Intl - London Gatwick.

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

Looking at all options, your cheapest flight can be booked for £284. While the most popular route (Washington, D.C. Dulles Intl - London Heathrow) can be booked for £312 on average, our data indicates £647 when flying from Washington, D.C. to London.

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

Before booking your flight to London from Washington, D.C., check out the most reliable airlines to get you to your destination on time: Aeromexico (100%), KLM (70%), Air France( 70%).

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

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

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

Leaving on a Tuesday is a viable option for saving on travel. Heavily demanded days of the week can typically drive up the prices you see. Booking your travel for a less competitive day can save up to 18% on the overall cost on flights from Washington, D.C. to London.

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

Find a great deal and save up to 37% by booking at least 48 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Washington, D.C. to London within the next two weeks, with the cheapest ticket starting at £549.

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

January is one of the best times of the year to fly to London from Washington, D.C.. Prices for January average £540 per person but you can even find prices for as low as £287. The most expensive prices can be found in the month of June. Opting for a January flight can save you 29% on your journey compared to booking in June

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

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

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

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

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

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

£125+ Flights from Washington, D.C. to London

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

Airfare is below average for this route at the moment. Washington, D.C. to London flights typically cost between £417 and £544 in October. The cheapest return flight price found within the last 3 days was £362 on Icelandair (15 Oct-20 Oct).

Cheapflights Tip: The best prices from Washington, D.C. to London are usually found in January or September, booked 70 days in advance, depart on a Wednesday or Tuesday and return on a Wednesday

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

Round-trip from	£362
One-way from	£125
Popular in	June
Cheapest in	January
Average price	£482
Good round-trip deal	£478 or less
Good one-way deal	£270 or less

Icelandair
15/10-20/10
2 total stops
45h 50m total
Washington, D.C. to London

Search Deals

7/10
1 total stop
17h 41m total
Washington, D.C. to London

Search Deals

Highest demand for flights based on searches. 11% potential increase in price (£53 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£11 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 Washington, D.C. (WAS) to London (LON).

Search Deals

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

Search Deals

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

Cheapest flights from Washington, D.C. to London
Explore the most affordable flight options available from Washington, D.C. to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 September 2025.

Wed 15/1020:30IAD - LGW

1 stop13h 10mIcelandair

Mon 20/1015:40LGW - IAD

1 stop32h 40mIcelandair

Deal found 11/9£362

Wed 8/1020:30IAD - LHR

1 stop18h 50mIcelandair

Wed 15/1013:05LHR - IAD

1 stop14h 05mIcelandair

Deal found 10/9£362

Tue 28/1020:40IAD - STN

2 stops20h 40mMultiple Airlines

Tue 11/1106:30STN - IAD

2 stops17h 00mMultiple Airlines

Deal found 11/9£363

Tue 30/920:30IAD - LGW

1 stop13h 10mIcelandair

Wed 8/1015:40LGW - IAD

1 stop11h 30mIcelandair

Deal found 11/9£363

Wed 1/1020:30IAD - LHR

1 stop10h 25mIcelandair

Thu 9/1021:25LHR - IAD

1 stop26h 55mIcelandair

Deal found 11/9£363

Thu 23/1020:30IAD - STN

2 stops14h 15mMultiple Airlines

Sun 2/1108:30STN - IAD

2 stops15h 00mMultiple Airlines

Deal found 11/9£364

Wed 8/1020:30IAD - LGW

1 stop13h 10mIcelandair

Wed 29/1011:55LGW - IAD

1 stop11h 35mIcelandair

Deal found 10/9£364

Mon 13/1020:30IAD - LHR

1 stop10h 25mIcelandair

Thu 23/1021:25LHR - IAD

1 stop26h 55mIcelandair

Deal found 11/9£364

Tue 30/920:30IAD - LGW

1 stop13h 10mIcelandair

Fri 10/1015:40LGW - IAD

1 stop11h 30mIcelandair

Deal found 11/9£365

Sat 4/1020:30IAD - LHR

1 stop10h 25mIcelandair

Wed 15/1021:25LHR - IAD

1 stop26h 55mIcelandair

Deal found 10/9£365

Wed 15/1023:15IAD - LGW

1 stop10h 25mIcelandair

Thu 23/1015:40LGW - IAD

1 stop32h 40mIcelandair

Deal found 11/9£365

Wed 10/1219:40IAD - LTN

1 stop12h 15mMultiple Airlines

Wed 17/1208:00LTN - IAD

1 stop15h 30mMultiple Airlines

Deal found 9/9£365

Best flights from Washington, D.C. to London
Discover carefully curated flight deals from Washington, D.C. to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 12 September 2025.

Wed 10/1219:40IAD - LTN

1 stop12h 15mMultiple Airlines

Wed 17/1208:00LTN - IAD

1 stop15h 30mMultiple Airlines

Deal found 9/9£365

Mon 1/1219:40IAD - LGW

1 stop10h 15mIcelandair

Sat 13/1211:55LGW - IAD

1 stop11h 35mIcelandair

Deal found 11/9£382

Tue 14/1012:09IAD - LHR

2 stops16h 26mScandinavian Airlines

Tue 21/1010:20LHR - IAD

1 stop14h 39mScandinavian Airlines

Deal found 11/9£412

Mon 6/1011:59DCA - LGW

1 stop13h 36mAmerican Airlines

Tue 21/1012:20LGW - DCA

1 stop13h 40mAmerican Airlines

Deal found 11/9£412

Mon 27/1023:15IAD - LHR

Nonstop7h 35mUnited Airlines

Thu 6/1113:45LHR - IAD

1 stop31h 55mUnited Airlines

Deal found 11/9£420

Wed 3/1222:20IAD - LHR

Nonstop7h 30mDelta

Fri 12/1210:00LHR - IAD

1 stop11h 05mDelta

Deal found 11/9£427

Tue 23/913:50BWI - LHR

1 stop18h 40mVirgin Atlantic

Tue 7/1011:30LHR - BWI

2 stops16h 32mVirgin Atlantic

Deal found 10/9£439

Sat 4/1013:35DCA - LGW

1 stop15h 00mJetBlue

Wed 15/1012:10LGW - DCA

1 stop13h 49mJetBlue

Deal found 10/9£442

Wed 22/1017:25IAD - LCY

1 stop9h 45mKLM

Wed 29/1010:00LCY - IAD

1 stop11h 05mKLM

Deal found 11/9£471

Tue 14/1016:30IAD - LCY

1 stop12h 35mITA Airways

Thu 2/416:50LCY - IAD

1 stop26h 50mITA Airways

Deal found 12/9£508

Tue 13/119:40IAD - LTN

1 stop14h 10mMultiple Airlines

Tue 20/107:00LTN - IAD

1 stop16h 30mMultiple Airlines

Deal found 10/9£368

Sun 30/1119:40IAD - LGW

1 stop10h 15mIcelandair

Sat 13/1211:55LGW - IAD

1 stop11h 35mIcelandair

Deal found 11/9£382

Direct flights from Washington, D.C. to London
Explore direct flight options from Washington, D.C. to London based on user searches, and compare prices and availability for your desired travel dates. Data last updated 12 September 2025.

Mon 13/1022:25IAD - LHR

Nonstop7h 15mLufthansa

Wed 22/1016:40LHR - IAD

Nonstop8h 15mLufthansa

Deal found 11/9£403

Sun 12/1022:25IAD - LHR

Nonstop7h 15mLufthansa

Tue 21/1012:15LHR - IAD

Nonstop8h 15mLufthansa

Deal found 10/9£406

Sun 28/917:50IAD - LHR

Nonstop7h 30mVirgin Atlantic

Tue 7/1012:35LHR - IAD

Nonstop8h 25mVirgin Atlantic

Deal found 12/9£413

Mon 22/917:50IAD - LHR

Nonstop7h 30mVirgin Atlantic

Wed 8/1012:35LHR - IAD

Nonstop8h 25mVirgin Atlantic

Deal found 11/9£414

Mon 13/1018:45IAD - LHR

Nonstop7h 30mVirgin Atlantic

Wed 22/1012:35LHR - IAD

Nonstop8h 25mVirgin Atlantic

Deal found 12/9£415

Wed 8/1017:50IAD - LHR

Nonstop7h 30mVirgin Atlantic

Wed 15/1012:35LHR - IAD

Nonstop8h 25mVirgin Atlantic

Deal found 10/9£416

Wed 15/1018:45IAD - LHR

Nonstop7h 30mVirgin Atlantic

Tue 21/1012:35LHR - IAD

Nonstop8h 25mVirgin Atlantic

Deal found 11/9£422

Mon 29/917:50IAD - LHR

Nonstop7h 30mVirgin Atlantic

Tue 21/1012:35LHR - IAD

Nonstop8h 25mVirgin Atlantic

Deal found 10/9£424

Wed 14/120:35BWI - LHR

Nonstop7h 05mBritish Airways

Wed 4/215:25LHR - BWI

Nonstop8h 20mBritish Airways

Deal found 11/9£427

Wed 24/922:40IAD - LHR

Nonstop7h 25mBritish Airways

Thu 9/1012:45LHR - IAD

Nonstop8h 10mBritish Airways

Deal found 11/9£427

Sun 28/921:35BWI - LHR

Nonstop7h 15mBritish Airways

Tue 7/1016:35LHR - BWI

Nonstop8h 10mBritish Airways

Deal found 12/9£429

Sun 28/917:50IAD - LHR

Nonstop7h 25mBritish Airways

Tue 7/1017:00LHR - IAD

Nonstop8h 15mBritish Airways

Deal found 12/9£429

Last-minute flights from Washington, D.C. to London
Discover last-minute flight deals from Washington, D.C. to London. Data last updated 12 September 2025 and is based on user searches.

Sun 21/920:30IAD - LHR

1 stop10h 25mIcelandair

Tue 30/921:25LHR - IAD

1 stop26h 55mIcelandair

Deal found 11/9£367

Sun 21/920:30IAD - LHR

1 stop10h 25mIcelandair

Tue 7/1013:05LHR - IAD

1 stop11h 15mIcelandair

Deal found 11/9£372

Mon 29/920:30IAD - LGW

1 stop13h 05mIcelandair

Fri 10/1015:40LGW - IAD

1 stop11h 30mIcelandair

Deal found 12/9£369

Tue 30/920:30IAD - LGW

1 stop13h 10mIcelandair

Wed 8/1015:40LGW - IAD

1 stop11h 30mIcelandair

Deal found 11/9£363

Wed 8/1020:30IAD - LGW

1 stop13h 10mIcelandair

Wed 29/1011:55LGW - IAD

1 stop11h 35mIcelandair

Deal found 10/9£364

Mon 13/1017:45IAD - LTN

2 stops24h 35mMultiple Airlines

Tue 21/1018:10LTN - IAD

2 stops26h 10mMultiple Airlines

Deal found 10/9£369

Wed 15/1020:30IAD - LGW

1 stop13h 10mIcelandair

Mon 20/1015:40LGW - IAD

1 stop32h 40mIcelandair

Deal found 11/9£362

Wed 15/1020:30IAD - LGW

1 stop13h 10mIcelandair

Wed 22/1015:40LGW - IAD

1 stop32h 40mIcelandair

Deal found 11/9£365

Sat 18/1023:15IAD - LGW

1 stop10h 20mIcelandair

Thu 30/1011:55LGW - IAD

1 stop11h 35mIcelandair

Deal found 10/9£366

Tue 28/1020:40IAD - LGW

2 stops18h 50mMultiple Airlines

Tue 11/1108:50LGW - IAD

2 stops14h 40mMultiple Airlines

Deal found 11/9£368

Tue 28/1018:30IAD - LGW

1 stop17h 15mTAP AIR PORTUGAL

Fri 7/1110:40LGW - IAD

1 stop15h 20mTAP AIR PORTUGAL

Deal found 10/9£371

Tue 28/1020:40IAD - LTN

2 stops19h 25mMultiple Airlines

Tue 11/1109:00LTN - IAD

2 stops14h 30mMultiple Airlines

Deal found 11/9£372

One-way flights from Washington, D.C. to London
Search for one-way flight options from Washington, D.C. to London. Find affordable one-way fares based on user searches. Data last updated 12 September 2025.

Tue 7/1011:19BWI - LGW

1 stop17h 41mMultiple Airlines

Deal found 10/9£125

Sun 19/1018:52BWI - LGW

1 stop34h 08mMultiple Airlines

Deal found 10/9£126

Sun 5/1021:52BWI - LGW

1 stop31h 08mMultiple Airlines

Deal found 10/9£128

Sat 27/921:39BWI - LGW

1 stop31h 31mMultiple Airlines

Deal found 11/9£130

Mon 6/1021:41BWI - LGW

1 stop31h 19mMultiple Airlines

Deal found 11/9£135

Wed 8/1008:00BWI - LGW

1 stop21h 00mMultiple Airlines

Deal found 10/9£138

Sun 12/1006:53BWI - LGW

1 stop22h 17mMultiple Airlines

Deal found 11/9£139

Wed 1/1020:52BWI - LGW

1 stop32h 08mMultiple Airlines

Deal found 11/9£142

Fri 3/1020:52BWI - LGW

1 stop32h 08mMultiple Airlines

Deal found 11/9£150

Sun 28/913:17BWI - LGW

1 stop15h 53mMultiple Airlines

Deal found 10/9£154

Fri 14/1117:44BWI - LHR

2 stops22h 51mMultiple Airlines

Deal found 11/9£168

Mon 6/1017:01BWI - LHR

2 stops36h 19mMultiple Airlines

Deal found 11/9£175

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.London

IAD - LTN

IADLTN

Washington, D.C. Dulles Intl

Wed 10/12

19:40-12:55

1 stop12h 15m

London Luton

Wed 17/12

08:00-18:30

1 stop15h 30m

£365

Washington, D.C.London

IAD - LTN

IADLTN

Washington, D.C. Dulles Intl

Tue 13/1

19:40-14:50

1 stop14h 10m

London Luton

Tue 20/1

07:00-18:30

1 stop16h 30m

£368

Washington, D.C.London

IAD - LTN

IADLTN

Washington, D.C. Dulles Intl

Wed 3/12

19:40-12:55

1 stop12h 15m

London Luton

Mon 15/12

08:00-18:30

1 stop15h 30m

£381

Washington, D.C.London

IAD - LTN

IADLTN

Washington, D.C. Dulles Intl

Mon 1/12

19:40-14:00

1 stop13h 20m

London Luton

Mon 15/12

08:00-18:30

1 stop15h 30m

£381

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Mon 1/12

19:40-10:55

1 stop10h 15m

London Gatwick

Sat 13/12

11:55-18:30

1 stop11h 35m

£382

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Sun 30/11

19:40-10:55

1 stop10h 15m

London Gatwick

Sat 13/12

11:55-18:30

1 stop11h 35m

£382

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Mon 17/11

19:40-10:55

1 stop10h 15m

London Gatwick

Fri 21/11

11:55-18:30

1 stop11h 35m

£382

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Tue 18/11

19:40-10:55

1 stop10h 15m

London Gatwick

Tue 25/11

11:55-18:30

1 stop11h 35m

£382

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Mon 8/12

19:40-10:55

1 stop10h 15m

London Gatwick

Fri 23/1

11:55-18:30

1 stop11h 35m

£382

Washington, D.C.London

IAD - LTN

IADLTN

Washington, D.C. Dulles Intl

Sun 23/11

19:40-14:50

1 stop14h 10m

London Luton

Thu 27/11

06:00-18:30

1 stop17h 30m

£384

Flights are sorted by cheapest return flights first.

Deals found on 9/9

Showing 1-10 of 60 results

...

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

Have a flexible travel schedule? Discover the best time to fly to London from Washington, D.C. 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 Washington, D.C. to London

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

The best time to book flights from Washington, D.C. to London is 70 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, January is the cheapest month in which you can book a flight from Washington, D.C. to London (average of £112). Flying from Washington, D.C. to London in August is currently the most expensive (average of £164). 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 WAS to LON?

It’s optimal to fly from Washington, D.C. to London in the afternoon. By choosing this option you can save up to 61% on the cost of your flight, compared to a flight in the morning.

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

The most flights from WAS to LON 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 (22 on average).

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

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

Reykjavik (KEF) – chosen by Cheapflights users on 67% of one-stop itineraries from Washington, D.C. to London on Cheapflights.

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

Reykjavik (KEF) is the most affordable one-stop option, with an average return flight price of £324.

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

Flights via Philadelphia (PHL) have the shortest average one-way travel time for one-stop routes: 8h 50m.

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

Flights via Charlotte (CLT) offer the fastest connection on this route, with an average stopover time of 1h 18m.

Reviews of airlines servicing London

Read reviews from past customers who have flown with United Airlines, Virgin Atlantic, andIcelandair from Washington, D.C. to London. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

United Airlines

7.4

Good

8,937 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

United Airlines

7.4

Good

8,937 reviews

United Airlines

7.4

Good

8,937 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Virgin Atlantic

7.4

Good

664 reviews

United Airlines

7.4

Good

8,937 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Icelandair

7.0

Good

546 reviews

United Airlines

7.4

Good

8,937 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Iberia

7.0

Good

2,929 reviews

United Airlines

7.4

Good

8,937 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

British Airways

6.7

Okay

7,361 reviews

United Airlines

7.4

Good

8,937 reviews

Check prices

Reviews

1 / 20

4.0

Okay

Thomas,Mar 2025

SFO - TPE

When I asked for an extra snack, I got an unhappy look from the stewardess. Geez, does one extra snack really affect the bottom line??

Related info for your journey

How long is the flight from Washington, D.C. to London?
Departing from Washington, D.C. to London will take you 10h 15m. The distance between Washington, D.C. and London is about 3683 mi. Both multi-stop and direct flights can be found to your destination and back.
What are the cheapest airlines flying from Washington, D.C. to London round-trip?
Lufthansa, at £306, was found to be the cheapest airline from Washington, D.C. to London.Alternate airlines flying return to your destination include Icelandair and Virgin Atlantic. These flights start at 43% lower than the current average price 3 months from now.
What are the cheapest airlines to fly from Washington, D.C. to London one-way?
The cheapest airline one-way is TAP AIR PORTUGAL, with whom users have recently found tickets for as low as £203. However, be on the lookout for offers from Scandinavian Airlines and JetBlue, as they are both options that can get you from Washington, D.C. to London for a low price.
What are the most popular routes from Washington, D.C. to London?
The most popular route from Washington, D.C. to London is Washington, D.C. Dulles Intl - London Heathrow. You may also consider Baltimore/Washington - London Heathrow or Washington, D.C. Dulles Intl - London Gatwick.
What are the most reliable airlines from Washington, D.C. to London?
Before booking your flight to London from Washington, D.C., check out the most reliable airlines to get you to your destination on time: Aeromexico (100%), KLM (70%), Air France( 70%).
What are the cheapest flights from Washington, D.C. to London?
Looking at all options, your cheapest flight can be booked for £284. While the most popular route (Washington, D.C. Dulles Intl - London Heathrow) can be booked for £312 on average, our data indicates £647 when flying from Washington, D.C. to London.
Can I find deals for flights from Washington, D.C. to London that include hotel bookings?
Yes. In addition to deals on Washington, D.C. to London flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Washington, D.C. to London?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington, D.C. to London.
Can I find deals for business class flights from Washington, D.C. to London?
Yes. Cheapflights offers flight deals from Washington, D.C. to London 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 Washington, D.C. to London?
Currently, January is the cheapest month in which you can book a flight from Washington, D.C. to London (average of £112). Flying from Washington, D.C. to London in August is currently the most expensive (average of £164). 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.

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Alternative routes for Washington, D.C. to London

Top 9 airlines flying from Washington, D.C. to London

Airline	Cheapest	Average	Flexibility	On-time
Lufthansa	Cheapest£306	Average£519	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
Icelandair	Cheapest£354	Average£657	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
Virgin Atlantic	Cheapest£374	Average£606	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
British Airways	Cheapest£382	Average£559	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Air France	Cheapest£393	Average£521	FlexibilityNo cancel fee	On-time77%	Search Air France flights
Iberia	Cheapest£411	Average£525	FlexibilityNo cancel fee	On-time77%	Search Iberia flights
KLM	Cheapest£455	Average£587	FlexibilityNo cancel fee	On-time75%	Search KLM flights
American Airlines	Cheapest£509	Average£713	FlexibilityNo cancel fee	On-time71%	Search American Airlines flights
United Airlines	Cheapest£518	Average£620	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights

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

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Washington, D.C. to London. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Washington, D.C. to London.

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

Certainly. Search results for flights to London from Washington, D.C. shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to London from Washington, D.C. today and book when prices fit your budget.

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Cheap flights from Washington, D.C. to London from £125

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 7/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheapflights Tip: The best prices from Washington, D.C. to London are usually found in January or September, booked 70 days in advance, depart on a Wednesday or Tuesday and return on a Wednesday

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

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

Cheapest flights from Washington, D.C. to LondonExplore the most affordable flight options available from Washington, D.C. to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 September 2025.

Explore the most affordable flight options available from Washington, D.C. to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 September 2025.

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

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

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

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

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

Use this chart to determine the optimal time to book a return flight from Washington, D.C. to London. Price data was last updated on 29 August 2025.

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

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

Find hourly flight availability from Washington, D.C. to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 12 September 2025.

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

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

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

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

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

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

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

Shortest average travel time for one-stop one-way flights from Washington, D.C. to London, 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 Washington, D.C. to London?

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

Reviews of airlines servicing London

Read reviews from past customers who have flown with United Airlines, Virgin Atlantic, andIcelandair from Washington, D.C. to London. Users can see the overall rating for each airline as well as how each is rated 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 Washington, D.C. to London. 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 Washington, D.C. to London?

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

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

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

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

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

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

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

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

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

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Alternative routes for Washington, D.C. to London

See prices for flight routes from nearby airports that may be better suited for you.

Top 9 airlines flying from Washington, D.C. to London

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

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

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

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

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Cheapest flights from Washington, D.C. to London
Explore the most affordable flight options available from Washington, D.C. to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 12 September 2025.