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

PLAY, at £435, was found to be the cheapest airline from Washington, D.C. to London.Alternate airlines flying return to your destination include Icelandair and Scandinavian Airlines. These flights start at 22% 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 £163. 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 £287. While the most popular route (Washington, D.C. Dulles Intl - London Heathrow) can be booked for £384 on average our data indicates £962 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 28% by booking at least 55 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 £603.

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 £561 per person but you can even find prices for as low as £291. 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.

£155+ Flights from Washington, D.C. to London

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	£435
One-way from	£155
Popular in	June
Cheapest in	January
Average price	£538
Good round-trip deal	£496 or less
Good one-way deal	£331 or less

PLAY
10/9-16/9
2 total stops
21h 50m total
Washington, D.C. to London

Search Deals

29/7
1 total stop
13h 10m 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 18 April 2025.

Wed 10/918:50BWI - STN

1 stop10h 50mPLAY

Tue 16/911:40STN - BWI

1 stop11h 00mPLAY

Deal found 17/4£435

Thu 16/1020:30BWI - LGW

1 stop13h 10mIcelandair

Mon 20/1015:40LGW - BWI

1 stop32h 45mIcelandair

Deal found 18/4£436

Thu 8/521:24BWI - STN

2 stops32h 16mMultiple Airlines

Tue 13/511:40STN - BWI

3 stops35h 08mMultiple Airlines

Deal found 18/4£436

Mon 13/1020:30BWI - LHR

1 stop18h 50mIcelandair

Wed 3/1212:15LHR - BWI

1 stop11h 15mIcelandair

Deal found 17/4£437

Wed 7/518:50BWI - LTN

2 stops19h 40mMultiple Airlines

Wed 14/506:00LTN - BWI

2 stops16h 40mMultiple Airlines

Deal found 18/4£438

Wed 7/518:50BWI - LGW

2 stops20h 35mMultiple Airlines

Wed 14/506:00LGW - BWI

2 stops16h 40mMultiple Airlines

Deal found 18/4£442

Tue 6/520:30IAD - LGW

1 stop13h 10mIcelandair

Tue 13/515:40LGW - IAD

1 stop32h 40mIcelandair

Deal found 18/4£459

Sun 21/922:05IAD - LHR

2 stops18h 30mScandinavian Airlines

Tue 30/919:50LHR - IAD

2 stops29h 09mScandinavian Airlines

Deal found 17/4£459

Wed 23/420:45IAD - LHR

1 stop30h 10mSWISS

Wed 30/406:00LHR - IAD

1 stop15h 15mSWISS

Deal found 16/4£460

Mon 22/917:45IAD - LGW

2 stops21h 40mTAP AIR PORTUGAL

Tue 30/910:35LGW - IAD

1 stop15h 15mTAP AIR PORTUGAL

Deal found 17/4£461

Sun 4/522:20IAD - LHR

1 stop31h 00mTAP AIR PORTUGAL

Tue 13/519:50LHR - IAD

1 stop24h 30mTAP AIR PORTUGAL

Deal found 17/4£461

Fri 2/506:15DCA - LHR

1 stop9h 30mJetBlue

Wed 14/508:25LHR - DCA

1 stop14h 35mJetBlue

Deal found 16/4£461

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 18 April 2025.

Wed 10/918:50BWI - STN

1 stop10h 50mPLAY

Tue 16/911:40STN - BWI

1 stop11h 00mPLAY

Deal found 17/4£435

Tue 30/920:30BWI - LGW

1 stop13h 10mIcelandair

Sun 12/1015:40LGW - BWI

1 stop32h 45mIcelandair

Deal found 17/4£436

Thu 8/521:24BWI - STN

2 stops32h 16mMultiple Airlines

Tue 13/511:40STN - BWI

3 stops35h 08mMultiple Airlines

Deal found 18/4£436

Sun 21/922:05IAD - LHR

2 stops18h 30mScandinavian Airlines

Tue 30/919:50LHR - IAD

2 stops29h 09mScandinavian Airlines

Deal found 17/4£459

Mon 22/917:45IAD - LGW

2 stops21h 40mTAP AIR PORTUGAL

Tue 30/910:35LGW - IAD

1 stop15h 15mTAP AIR PORTUGAL

Deal found 17/4£461

Fri 2/506:15DCA - LHR

1 stop9h 30mJetBlue

Wed 14/508:25LHR - DCA

1 stop14h 35mJetBlue

Deal found 16/4£461

Sun 4/517:20IAD - LHR

1 stop12h 00mAer Lingus

Tue 13/512:00LHR - IAD

1 stop12h 30mAer Lingus

Deal found 18/4£470

Tue 2/922:40IAD - LHR

Nonstop7h 25mIberia

Tue 9/906:10LHR - IAD

1 stop13h 50mIberia

Deal found 18/4£473

Sun 4/515:18IAD - LHR

1 stop13h 42mAir Canada

Tue 13/506:50LHR - IAD

2 stops14h 29mAir Canada

Deal found 17/4£477

Sun 4/517:50IAD - LHR

Nonstop7h 30mVirgin Atlantic

Tue 13/506:30LHR - IAD

1 stop14h 05mVirgin Atlantic

Deal found 17/4£481

Wed 7/517:49DCA - LGW

1 stop9h 21mAmerican Airlines

Tue 20/515:05LGW - DCA

1 stop12h 31mAmerican Airlines

Deal found 17/4£487

Sun 21/917:00DCA - LGW

1 stop9h 50mBritish Airways

Tue 30/915:05LGW - DCA

1 stop12h 55mBritish Airways

Deal found 17/4£490

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 18 April 2025.

Sun 4/517:50IAD - LHR

Nonstop7h 30mVirgin Atlantic

Tue 13/512:35LHR - IAD

Nonstop8h 25mVirgin Atlantic

Deal found 17/4£482

Mon 18/821:20BWI - LHR

Nonstop7h 15mBritish Airways

Tue 2/916:35LHR - BWI

Nonstop8h 00mBritish Airways

Deal found 16/4£487

Wed 3/921:20BWI - LHR

Nonstop7h 15mIberia

Wed 17/916:35LHR - BWI

Nonstop8h 00mIberia

Deal found 18/4£488

Tue 2/922:40IAD - LHR

Nonstop7h 25mIberia

Tue 9/917:00LHR - IAD

Nonstop8h 10mIberia

Deal found 18/4£488

Sat 6/917:50IAD - LHR

Nonstop7h 25mBritish Airways

Sat 13/914:30LHR - IAD

Nonstop8h 05mBritish Airways

Deal found 17/4£493

Tue 6/521:20BWI - LHR

Nonstop7h 15mFinnair

Tue 13/516:35LHR - BWI

Nonstop8h 00mFinnair

Deal found 17/4£501

Tue 6/517:40IAD - LHR

Nonstop7h 35mFinnair

Tue 13/512:45LHR - IAD

Nonstop8h 00mFinnair

Deal found 17/4£501

Tue 23/917:50IAD - LHR

Nonstop7h 30mDelta

Fri 10/1012:35LHR - IAD

Nonstop8h 25mDelta

Deal found 16/4£507

Sun 31/818:35IAD - LHR

Nonstop7h 20mUnited Airlines

Wed 22/1012:15LHR - IAD

Nonstop8h 15mUnited Airlines

Deal found 17/4£541

Tue 6/517:50IAD - LHR

Nonstop7h 30mAir France

Wed 21/512:35LHR - IAD

Nonstop8h 25mAir France

Deal found 18/4£556

Wed 30/421:20BWI - LHR

Nonstop7h 15mAmerican Airlines

Sun 4/516:35LHR - BWI

Nonstop8h 00mAmerican Airlines

Deal found 17/4£591

Tue 20/522:40IAD - LHR

Nonstop7h 25mAmerican Airlines

Tue 27/514:30LHR - IAD

Nonstop8h 00mAmerican Airlines

Deal found 17/4£592

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

Wed 23/420:45IAD - LHR

1 stop30h 10mSWISS

Wed 30/406:00LHR - IAD

1 stop15h 15mSWISS

Deal found 16/4£460

Thu 24/409:00DCA - LHR

1 stop16h 30mJetBlue

Tue 29/408:25LHR - DCA

1 stop11h 35mJetBlue

Deal found 18/4£474

Sat 26/418:50BWI - STN

1 stop10h 50mPLAY

Sat 3/511:40STN - BWI

1 stop11h 00mPLAY

Deal found 17/4£440

Sun 27/418:50BWI - STN

2 stops17h 05mMultiple Airlines

Wed 30/422:00STN - BWI

2 stops24h 40mMultiple Airlines

Deal found 17/4£450

Sun 27/418:50BWI - LTN

2 stops21h 40mMultiple Airlines

Wed 30/413:00LTN - BWI

2 stops33h 40mMultiple Airlines

Deal found 17/4£454

Sun 27/418:50BWI - LGW

2 stops17h 55mMultiple Airlines

Wed 30/422:00LGW - BWI

2 stops24h 40mMultiple Airlines

Deal found 17/4£462

Sun 27/422:05IAD - LHR

1 stop12h 55mScandinavian Airlines

Tue 6/510:20LHR - IAD

1 stop14h 39mScandinavian Airlines

Deal found 17/4£480

Mon 28/420:30IAD - LHR

1 stop18h 50mIcelandair

Wed 7/521:25LHR - IAD

1 stop26h 55mIcelandair

Deal found 17/4£459

Mon 28/420:30BWI - LHR

1 stop18h 50mIcelandair

Tue 6/513:05LHR - BWI

1 stop11h 20mIcelandair

Deal found 17/4£461

Mon 28/420:30BWI - LHR

1 stop18h 50mMultiple Airlines

Thu 1/521:25LHR - BWI

1 stop25h 15mMultiple Airlines

Deal found 16/4£463

Mon 28/420:30IAD - LHR

1 stop10h 25mMultiple Airlines

Thu 1/506:00LHR - IAD

1 stop14h 20mMultiple Airlines

Deal found 17/4£479

Mon 28/420:30BWI - LGW

1 stop13h 05mIcelandair

Thu 8/513:00LGW - BWI

1 stop11h 25mIcelandair

Deal found 17/4£483

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 18 April 2025.

Tue 29/718:50BWI - LTN

1 stop13h 10mMultiple Airlines

Deal found 17/4£155

Mon 13/1020:30BWI - LHR

1 stop10h 25mIcelandair

Deal found 17/4£163

Tue 29/712:12BWI - LGW

1 stop16h 48mMultiple Airlines

Deal found 17/4£169

Tue 29/718:50BWI - STN

1 stop10h 50mPLAY

Deal found 17/4£171

Mon 13/1020:30BWI - STN

2 stops14h 35mMultiple Airlines

Deal found 17/4£191

Tue 6/520:30IAD - LHR

1 stop10h 25mIcelandair

Deal found 17/4£193

Mon 13/1020:30IAD - LGW

1 stop13h 05mIcelandair

Deal found 17/4£194

Mon 28/717:45IAD - LHR

1 stop11h 35mTAP AIR PORTUGAL

Deal found 17/4£194

Mon 13/1020:30BWI - LGW

1 stop13h 05mIcelandair

Deal found 17/4£194

Fri 9/505:35BWI - LHR

2 stops33h 45mMultiple Airlines

Deal found 17/4£199

Sat 2/817:00IAD - LGW

1 stop11h 45mTAP AIR PORTUGAL

Deal found 17/4£204

Tue 1/720:30IAD - STN

2 stops20h 25mMultiple Airlines

Deal found 17/4£216

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 - STN

BWISTN

Baltimore/Washington

Wed 10/9

18:50-10:40

1 stop10h 50m

London Stansted

Tue 16/9

11:40-17:40

1 stop11h 00m

£435

BaltimoreLondon

BWI - LGW

BWILGW

Baltimore/Washington

Tue 30/9

20:30-14:40

1 stop13h 10m

London Gatwick

Sun 12/10

15:40-19:25

1 stop32h 45m

£436

BaltimoreLondon

BWI - STN

BWISTN

Baltimore/Washington

Thu 8/5

21:24-10:40

2 stops32h 16m

London Stansted

Tue 13/5

11:40-17:48

3 stops35h 08m

£436

BaltimoreLondon

BWI - LHR

BWILHR

Baltimore/Washington

Mon 13/10

20:30-11:55

1 stop10h 25m

London Heathrow

Fri 7/11

12:15-18:30

1 stop11h 15m

£437

BaltimoreLondon

BWI - LTN

BWILTN

Baltimore/Washington

Wed 7/5

18:50-18:00

2 stops18h 10m

London Luton

Wed 14/5

06:00-17:40

2 stops16h 40m

£438

BaltimoreLondon

BWI - LGW

BWILGW

Baltimore/Washington

Wed 7/5

18:50-20:25

2 stops20h 35m

London Gatwick

Wed 14/5

06:00-17:40

2 stops16h 40m

£442

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Sun 21/9

22:05-21:35

2 stops18h 30m

London Heathrow

Tue 30/9

19:50-19:59

2 stops29h 09m

£459

Washington, D.C.London

IAD - LGW

IADLGW

Washington, D.C. Dulles Intl

Mon 22/9

17:45-20:25

2 stops21h 40m

London Gatwick

Tue 30/9

10:35-20:50

1 stop15h 15m

£461

Washington, D.C.London

IAD - LHR

IADLHR

Washington, D.C. Dulles Intl

Sun 4/5

22:20-10:20

1 stop31h 00m

London Heathrow

Tue 13/5

19:50-15:20

1 stop24h 30m

£461

Washington, D.C.London

DCA - LHR

DCALHR

Washington, D.C. Reagan-National

Fri 2/5

06:15-20:45

1 stop9h 30m

London Heathrow

Wed 14/5

08:25-18:00

1 stop14h 35m

£461

Flights are sorted by cheapest return flights first.

Deals found on 17/4

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 Monday (25 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (21 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

7,917 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

7,917 reviews

Delta

8.0

Very Good

7,917 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

281 reviews

Delta

8.0

Very Good

7,917 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

1,329 reviews

Delta

8.0

Very Good

7,917 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.

LOT

7.6

Good

1,065 reviews

Delta

8.0

Very Good

7,917 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

1,269 reviews

Delta

8.0

Very Good

7,917 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?
PLAY, at £435, was found to be the cheapest airline from Washington, D.C. to London.Alternate airlines flying return to your destination include Icelandair and Scandinavian Airlines. These flights start at 22% 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 £163. 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 £287. While the most popular route (Washington, D.C. Dulles Intl - London Heathrow) can be booked for £384 on average our data indicates £962 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

Hounslow

Deal

Milton Keynes

Gatwick

Luton

Slough

Croydon

Eastbourne

Wembley

Hayes

Crawley

Southend-on-Sea

Maidstone

Ipswich

Southall

Ilford

Winchester

Folkestone

Dartford

Watford

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£362	Average£678	FlexibilityNo cancel fee	On-time76%	Search Icelandair flights
Iberia	Cheapest£420	Average£579	FlexibilityNo cancel fee	On-time77%	Search Iberia flights
Air France	Cheapest£431	Average£548	FlexibilityNo cancel fee	On-time77%	Search Air France flights
British Airways	Cheapest£431	Average£595	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Virgin Atlantic	Cheapest£440	Average£669	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights
KLM	Cheapest£469	Average£568	FlexibilityNo cancel fee	On-time75%	Search KLM flights
Lufthansa	Cheapest£499	Average£744	FlexibilityNo cancel fee	On-time76%	Search Lufthansa flights
United Airlines	Cheapest£501	Average£683	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 £155

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 29/7. 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 18 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 18 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 11 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 18 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 18 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 18 April 2025.