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

Icelandair, at £457, was found to be the cheapest airline from Washington, D.C. to London.Alternate airlines flying return to your destination include PLAY and JetBlue. These flights start at 18% 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 Icelandair, with whom users have recently found tickets for as low as £164. However, be on the lookout for offers from PLAY and TAP AIR PORTUGAL, 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. Saturday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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 £288. While the most popular route (Washington, D.C. Dulles Intl - London Heathrow) can be booked for £286 on average our data indicates £899 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: Singapore Airlines (91%), Delta (89%), Virgin Atlantic( 87%).

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 Sunday 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 19% 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 27% by booking at least 24 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 £599.

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 £558 per person but you can even find prices for as low as £289. The most expensive prices can be found in the month of June. Opting for a January flight can save you 31% 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.

£164+ Flights from Washington, D.C. to London - Compare & Save Big

Cheapflights Tip: The best prices from Washington, D.C. to London are usually found in January or October, booked 73 days in advance, depart on a Monday or Tuesday and return on a Wednesday

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

Round-trip from	£457
One-way from	£164
Popular in	June
Cheapest in	January
Average price	£534
Good round-trip deal	£500 or less
Good one-way deal	£309 or less

Icelandair
29/7-27/8
2 total stops
30h 10m total
Washington, D.C. to London

Search Deals

Icelandair
13/10
1 total stop
10h 25m total
Washington, D.C. to London

Search Deals

Highest demand for flights based on searches. 13% potential increase in price (£64 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease (£13 potential savings vs. average return price).

Search Deals

Average for round-trip flights in April 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 28 April 2025.

Tue 29/720:30BWI - LHR

1 stop18h 50mIcelandair

Wed 27/813:05LHR - BWI

1 stop11h 20mIcelandair

Deal found 27/4£457

Fri 2/518:50BWI - STN

1 stop10h 50mPLAY

Tue 6/511:40STN - BWI

1 stop11h 00mPLAY

Deal found 28/4£460

Thu 20/1120:30IAD - LHR

1 stop14h 30mScandinavian Airlines

Sun 30/1118:40LHR - IAD

1 stop27h 35mScandinavian Airlines

Deal found 27/4£462

Fri 26/911:30DCA - LGW

1 stop17h 05mJetBlue

Sat 4/1012:10LGW - DCA

1 stop13h 41mJetBlue

Deal found 27/4£463

Wed 13/820:30IAD - LGW

1 stop10h 15mIcelandair

Mon 18/815:40LGW - IAD

1 stop32h 40mIcelandair

Deal found 27/4£463

Sun 11/520:25IAD - LHR

1 stop9h 45mAer Lingus

Tue 20/509:50LHR - IAD

1 stop11h 00mAer Lingus

Deal found 27/4£465

Sun 19/1006:30DCA - LHR

1 stop9h 15mJetBlue

Sun 26/1008:25LHR - DCA

1 stop11h 35mJetBlue

Deal found 28/4£466

Sun 25/517:30BWI - LGW

1 stop32h 25mMultiple Airlines

Wed 28/510:00LGW - BWI

1 stop17h 13mMultiple Airlines

Deal found 28/4£466

Tue 7/1018:50BWI - STN

1 stop10h 50mMultiple Airlines

Thu 9/1008:15STN - BWI

2 stops14h 25mMultiple Airlines

Deal found 27/4£466

Tue 19/822:05IAD - STN

1 stop10h 55mMultiple Airlines

Tue 26/812:10STN - IAD

1 stop12h 49mMultiple Airlines

Deal found 27/4£466

Sat 29/1117:30IAD - LGW

1 stop11h 20mTAP AIR PORTUGAL

Sun 7/1221:25LGW - IAD

2 stops22h 50mTAP AIR PORTUGAL

Deal found 28/4£468

Fri 29/820:30IAD - LHR

1 stop18h 50mIcelandair

Fri 5/913:05LHR - IAD

1 stop14h 05mIcelandair

Deal found 28/4£468

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 28 April 2025.

Tue 29/720:30BWI - LHR

1 stop18h 50mIcelandair

Wed 27/813:05LHR - BWI

1 stop11h 20mIcelandair

Deal found 27/4£457

Fri 16/518:50BWI - STN

1 stop10h 50mPLAY

Sun 18/511:40STN - BWI

1 stop11h 00mPLAY

Deal found 28/4£461

Fri 26/911:30DCA - LGW

1 stop17h 05mJetBlue

Mon 29/912:10LGW - DCA

1 stop13h 41mJetBlue

Deal found 27/4£463

Wed 10/922:05IAD - LHR

1 stop12h 55mScandinavian Airlines

Tue 16/910:20LHR - IAD

1 stop14h 39mScandinavian Airlines

Deal found 27/4£463

Sun 11/520:25IAD - LHR

1 stop9h 45mAer Lingus

Tue 20/509:50LHR - IAD

1 stop11h 00mAer Lingus

Deal found 27/4£465

Sun 25/517:30BWI - LGW

1 stop32h 25mMultiple Airlines

Wed 28/510:00LGW - BWI

1 stop17h 13mMultiple Airlines

Deal found 28/4£466

Mon 22/922:20IAD - LGW

1 stop12h 15mTAP AIR PORTUGAL

Sun 28/912:05LGW - IAD

2 stops32h 15mTAP AIR PORTUGAL

Deal found 27/4£468

Tue 26/817:55IAD - LHR

Nonstop7h 20mIberia

Wed 3/906:15LHR - IAD

1 stop13h 45mIberia

Deal found 28/4£471

Sun 11/516:35DCA - LHR

1 stop12h 25mAir Canada

Tue 20/509:30LHR - DCA

1 stop11h 19mAir Canada

Deal found 27/4£483

Tue 29/706:00DCA - LGW

1 stop21h 10mBritish Airways

Wed 27/815:05LGW - DCA

1 stop12h 56mBritish Airways

Deal found 26/4£484

Wed 13/811:00DCA - LGW

1 stop18h 00mDelta

Wed 20/812:00LGW - DCA

1 stop27h 25mDelta

Deal found 27/4£486

Wed 3/922:25IAD - LHR

Nonstop7h 15mUnited Airlines

Fri 24/1008:40LHR - IAD

1 stop12h 35mUnited Airlines

Deal found 28/4£492

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 28 April 2025.

Sun 11/517:50IAD - LHR

Nonstop7h 30mVirgin Atlantic

Tue 20/512:35LHR - IAD

Nonstop8h 25mVirgin Atlantic

Deal found 27/4£478

Tue 29/722:20IAD - LHR

Nonstop7h 20mLufthansa

Wed 27/812:15LHR - IAD

Nonstop8h 20mLufthansa

Deal found 28/4£481

Wed 3/921:20BWI - LHR

Nonstop7h 15mBritish Airways

Wed 17/916:35LHR - BWI

Nonstop8h 00mBritish Airways

Deal found 28/4£486

Wed 3/919:25IAD - LHR

Nonstop7h 20mBritish Airways

Fri 24/1014:25LHR - IAD

Nonstop8h 05mBritish Airways

Deal found 28/4£486

Tue 12/821:20BWI - LHR

Nonstop7h 15mIberia

Fri 22/816:35LHR - BWI

Nonstop8h 00mIberia

Deal found 28/4£506

Mon 13/1017:50IAD - LHR

Nonstop7h 30mDelta

Wed 3/1213:35LHR - IAD

Nonstop8h 45mDelta

Deal found 28/4£506

Tue 29/721:20BWI - LHR

Nonstop7h 15mFinnair

Wed 27/816:35LHR - BWI

Nonstop8h 00mFinnair

Deal found 27/4£507

Fri 17/1022:45IAD - LHR

Nonstop7h 20mIberia

Sun 26/1012:10LHR - IAD

Nonstop8h 25mIberia

Deal found 27/4£518

Sun 31/818:35IAD - LHR

Nonstop7h 20mUnited Airlines

Tue 21/1012:15LHR - IAD

Nonstop8h 15mUnited Airlines

Deal found 28/4£539

Sun 11/522:40IAD - LHR

Nonstop7h 25mFinnair

Sun 18/517:05LHR - IAD

Nonstop8h 05mFinnair

Deal found 27/4£540

Sun 11/521:20BWI - LHR

Nonstop7h 15mAmerican Airlines

Thu 22/516:35LHR - BWI

Nonstop8h 00mAmerican Airlines

Deal found 28/4£552

Last-minute flights from Washington, D.C. to London
Discover last-minute flight deals from Washington, D.C. to London. Data last updated 28 April 2025 and is based on user searches.

Fri 2/518:50BWI - STN

1 stop10h 50mPLAY

Tue 6/511:40STN - BWI

1 stop11h 00mPLAY

Deal found 28/4£460

Sun 4/506:10DCA - LHR

1 stop9h 35mJetBlue

Fri 9/511:55LHR - DCA

1 stop16h 03mJetBlue

Deal found 27/4£472

Mon 5/520:30IAD - LHR

1 stop10h 25mIcelandair

Wed 14/513:05LHR - IAD

1 stop11h 15mIcelandair

Deal found 27/4£470

Mon 5/520:30BWI - LHR

1 stop10h 25mIcelandair

Wed 14/513:05LHR - BWI

1 stop11h 20mIcelandair

Deal found 28/4£481

Tue 6/522:20IAD - LGW

1 stop12h 15mTAP AIR PORTUGAL

Tue 20/516:25LGW - IAD

1 stop27h 55mTAP AIR PORTUGAL

Deal found 27/4£470

Tue 6/516:30IAD - LCY

1 stop12h 35mITA Airways

Thu 8/508:30LCY - IAD

2 stops40h 09mITA Airways

Deal found 28/4£472

Wed 7/520:30BWI - LGW

1 stop10h 15mIcelandair

Thu 15/515:40LGW - BWI

1 stop32h 45mIcelandair

Deal found 28/4£480

Wed 7/517:20IAD - STN

1 stop10h 35mMultiple Airlines

Wed 14/510:35STN - IAD

1 stop13h 55mMultiple Airlines

Deal found 27/4£482

Wed 7/517:20IAD - LGW

1 stop11h 00mMultiple Airlines

Wed 14/509:45LGW - IAD

1 stop14h 45mMultiple Airlines

Deal found 27/4£482

Wed 7/520:30BWI - LGW

1 stop10h 15mMultiple Airlines

Wed 14/520:20LGW - BWI

2 stops26h 20mMultiple Airlines

Deal found 27/4£488

Wed 7/522:20IAD - LHR

1 stop12h 15mTAP AIR PORTUGAL

Tue 20/518:45LHR - IAD

1 stop25h 35mTAP AIR PORTUGAL

Deal found 28/4£490

Thu 8/518:50BWI - STN

1 stop10h 50mPLAY

Tue 13/511:40STN - BWI

1 stop11h 00mPLAY

Deal found 28/4£463

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 28 April 2025.

Mon 13/1020:30BWI - LHR

1 stop10h 25mIcelandair

Deal found 27/4£164

Tue 22/718:50BWI - LTN

1 stop13h 10mMultiple Airlines

Deal found 27/4£165

Sun 27/718:50BWI - STN

1 stop10h 50mPLAY

Deal found 28/4£166

Wed 23/719:42BWI - LGW

1 stop30h 18mMultiple Airlines

Deal found 27/4£174

Sun 17/820:30BWI - LGW

1 stop13h 10mIcelandair

Deal found 27/4£181

Wed 3/923:15IAD - LGW

1 stop10h 25mIcelandair

Deal found 27/4£193

Wed 3/920:30IAD - LHR

1 stop10h 25mIcelandair

Deal found 27/4£193

Sun 27/713:31IAD - LHR

2 stops25h 49mMultiple Airlines

Deal found 27/4£195

Fri 11/713:32IAD - LGW

1 stop15h 28mMultiple Airlines

Deal found 28/4£198

Sun 27/722:20IAD - LGW

1 stop11h 50mTAP AIR PORTUGAL

Deal found 28/4£203

Sun 27/722:20IAD - LHR

1 stop18h 40mTAP AIR PORTUGAL

Deal found 28/4£203

Sun 20/712:12BWI - LHR

2 stops27h 08mMultiple Airlines

Deal found 27/4£210

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

BaltimoreLondon

BWI - LHR

BWILHR

Baltimore/Washington

Tue 29/7

20:30-20:20

1 stop18h 50m

London Heathrow

Wed 27/8

13:05-19:25

1 stop11h 20m

£457

BaltimoreLondon

BWI - STN

BWISTN

Baltimore/Washington

Fri 16/5

18:50-10:40

1 stop10h 50m

London Stansted

Sun 18/5

11:40-17:40

1 stop11h 00m

£461

Washington, D.C.London

DCA - LGW

DCALGW

Washington, D.C. Reagan-National

Fri 26/9

11:30-09:35

1 stop17h 05m

London Gatwick

Sat 4/10

12:10-20:51

1 stop13h 41m

£463

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Wed 10/9

22:05-16:00

1 stop12h 55m

London Heathrow

Tue 16/9

10:20-19:59

1 stop14h 39m

£463

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Wed 13/8

20:30-11:45

1 stop10h 15m

London Gatwick

Mon 18/8

15:40-19:20

1 stop32h 40m

£463

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Sun 11/5

20:25-11:10

1 stop9h 45m

London Heathrow

Tue 20/5

09:50-15:50

1 stop11h 00m

£465

BaltimoreLondon

BWI - LGW

BWILGW

Baltimore/Washington

Sun 25/5

17:30-06:55

1 stop32h 25m

London Gatwick

Wed 28/5

10:00-22:13

1 stop17h 13m

£466

BaltimoreLondon

BWI - STN

BWISTN

Baltimore/Washington

Tue 7/10

18:50-10:40

1 stop10h 50m

London Stansted

Thu 9/10

08:15-17:40

2 stops14h 25m

£466

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Mon 22/9

22:20-15:35

1 stop12h 15m

London Gatwick

Sun 28/9

12:05-15:20

2 stops32h 15m

£468

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Tue 26/8

17:55-06:15

Nonstop7h 20m

London Heathrow

Wed 3/9

06:15-15:00

1 stop13h 45m

£471

Flights are sorted by cheapest return flights first.

Deals found on 27/4

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 73 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 58% 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 Friday (31 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (27 on average).

Rainfall in London by month

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.

Temperature in London by month

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).

Reviews of airlines servicing London

Read through reviews of airlines operating flights from Washington, D.C. to London, such as Delta, Porter Airlines and KLM. 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.

Delta

8.0

Very Good

7,927 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Delta

8.0

Very Good

7,927 reviews

Delta

8.0

Very Good

7,927 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Porter Airlines

8.0

Very Good

285 reviews

Delta

8.0

Very Good

7,927 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

KLM

7.8

Good

1,333 reviews

Delta

8.0

Very Good

7,927 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Finnair

7.6

Good

1,273 reviews

Delta

8.0

Very Good

7,927 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

SWISS

7.5

Good

1,587 reviews

Delta

8.0

Very Good

7,927 reviews

Check prices

Reviews

1 / 20

10.0

Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

What are the cheapest airlines flying from Washington, D.C. to London round-trip?
Icelandair, at £457, was found to be the cheapest airline from Washington, D.C. to London.Alternate airlines flying return to your destination include PLAY and JetBlue. These flights start at 18% 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 Icelandair, with whom users have recently found tickets for as low as £164. However, be on the lookout for offers from PLAY and TAP AIR PORTUGAL, 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: Singapore Airlines (91%), Delta (89%), Virgin Atlantic( 87%).
What are the cheapest flights from Washington, D.C. to London?
Looking at all options, your cheapest flight can be booked for £288. While the most popular route (Washington, D.C. Dulles Intl - London Heathrow) can be booked for £286 on average our data indicates £899 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.

See more FAQs

Deal

Hounslow

Milton Keynes

Gatwick

Luton

Slough

Croydon

Eastbourne

Ilford

Hayes

Southend-on-Sea

Crawley

Wembley

Ipswich

Maidstone

Winchester

Folkestone

Dartford

Watford

Chichester

Browse thousands of different options on Cheapflights for your next trip

Alternative routes for Washington, D.C. to London

Top 8 airlines flying from Washington, D.C. to London

Airline	Cheapest	Average	Flexibility	On-time
Icelandair	Cheapest£360	Average£683	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
Iberia	Cheapest£418	Average£567	FlexibilityNo cancel fee	On-time77%	Search Iberia flights
Air France	Cheapest£428	Average£545	FlexibilityNo cancel fee	On-time77%	Search Air France flights
British Airways	Cheapest£429	Average£597	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Virgin Atlantic	Cheapest£438	Average£666	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
KLM	Cheapest£463	Average£597	FlexibilityNo cancel fee	On-time75%	Search KLM flights
Lufthansa	Cheapest£496	Average£740	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
United Airlines	Cheapest£498	Average£668	FlexibilityNo cancel fee	On-time69%	Search United Airlines flights

Fly with Cheapflights

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 £164

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 13/10. 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 October, booked 73 days in advance, depart on a Monday or Tuesday and return on a Wednesday

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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 28 April 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 28 April 2025.

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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 25 April 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 28 April 2025.

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

Rainfall in London by month

Plan your trip to London by taking into account the average rainfall totals by month.

Temperature in London by month

Plan your trip to London by taking into account the average temperature totals by month.

Reviews of airlines servicing London

Get insights into the airlines that provide service to London. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to London. Reviews last updated 28 April 2025.

Read through reviews of airlines operating flights from Washington, D.C. to London, such as Delta, Porter Airlines and KLM. 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.

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

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Top 8 airlines flying from Washington, D.C. to London

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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 28 April 2025.