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Washington, D.C.

$341+ Cheap flights from London (LON) to Washington, D.C. (WAS)

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 5/4. Fares are subject to change and may not be available on all flights or dates of travel.
LON — WAS
feb. 27 — mar. 61
jue. 2/27
jue. 3/6
1 adult, Economy
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The best prices from London to Washington, D.C. are usually found in February or September, booked 71 days in advance, depart on a Tuesday or Thursday and return on a Wednesday

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

Discover tips and strategies to find the most affordable flight options for your journey from London (LON) to Washington, D.C. (WAS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated febrero 22, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$441
(Kiwi.com)

One-way from

$341
(Norse)

Popular in

July

Cheapest in

February

Average price

$630

Good round-trip deal

$658 or less

Good one-way deal

$668 or less
Provider with most accurate pricing for London (LON)-Washington, D.C. (WAS) flight deals.
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Provider most trusted by Cheapflights users for London (LON)-Washington, D.C. (WAS) flights.
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From London (LON) to Washington, D.C. (WAS)
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One-way flight from London (LON) to Washington, D.C. (WAS)
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Highest demand for flights based on searches. 12% potential increase in price ($101 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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Price to beat on a round-trip flight from London (LON) to Washington, D.C. (WAS).
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Price to beat on a one-way flight from London (LON) to Washington, D.C. (WAS).
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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 febrero 22, 2025.

This Kiwi.com deal was found by Cheapflights users on 2/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 3/511:00 amSTN - BWI
2 stops17h 59mMultiple Airlines
mar. 3/117:10 pmBWI - STN
1 stop10h 50mMultiple Airlines
Deal found 2/22$441
This Kiwi.com deal was found by Cheapflights users on 2/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 3/1811:00 amSTN - BWI
1 stop11h 00mPLAY
mié. 11/126:05 pmBWI - STN
1 stop10h 50mPLAY
Deal found 2/22$442
This Kiwi.com deal was found by Cheapflights users on 2/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 4/247:40 amLGW - BWI
1 stop15h 00mMultiple Airlines
lun. 4/286:50 pmBWI - LGW
2 stops19h 20mMultiple Airlines
Deal found 2/20$447
This Mytrip deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 3/267:45 amLTN - BWI
2 stops20h 13mMultiple Airlines
lun. 3/316:50 pmBWI - LTN
2 stops20h 50mMultiple Airlines
Deal found 2/21$451
This Mytrip deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 3/178:20 amSTN - IAD
2 stops35h 10mMultiple Airlines
mar. 3/256:30 pmIAD - STN
2 stops22h 40mMultiple Airlines
Deal found 2/21$492
This Mytrip deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 3/1710:10 amLGW - IAD
2 stops33h 20mMultiple Airlines
mar. 3/256:30 pmIAD - LGW
2 stops21h 45mMultiple Airlines
Deal found 2/21$516
This Mytrip deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 3/178:50 pmLHR - IAD
2 stops22h 40mMultiple Airlines
mar. 3/256:30 pmIAD - LHR
2 stops21h 35mMultiple Airlines
Deal found 2/21$518
This Gotogate deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 4/243:40 pmLGW - IAD
1 stop32h 40mIcelandair
mié. 4/308:30 pmIAD - LGW
1 stop10h 15mIcelandair
Deal found 2/21$543
This Gotogate deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 4/269:25 pmLHR - BWI
1 stop27h 00mIcelandair
lun. 5/58:30 pmBWI - LHR
1 stop18h 50mIcelandair
Deal found 2/21$545
This Mytrip deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 3/107:50 pmLHR - BWI
2 stops26h 10mMultiple Airlines
mié. 3/195:30 amBWI - LHR
1 stop22h 25mMultiple Airlines
Deal found 2/21$553
This SWISS deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 2/288:55 amLHR - IAD
1 stop12h 30mSWISS
dom. 3/99:45 pmIAD - LHR
1 stop11h 15mSWISS
Deal found 2/21$557
This The Travel House deal was found by Cheapflights users on 2/21. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure The Travel House is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 4/223:40 pmLGW - BWI
1 stop32h 45mIcelandair
mié. 4/308:30 pmBWI - LGW
1 stop10h 15mIcelandair
Deal found 2/21$557

Find flights from London to Washington, D.C. within your budget

Customize your flight search to find flights from London to Washington, D.C. that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated febrero 22, 2025.

Fly from

London

Fly to

Washington, D.C.

Route

Depart

Return

Price

LondonBaltimore

STN - BWI

STNBWI

London Stansted

mié. 3/5

11:00 am-11:59 pm

2 stops17h 59m

Baltimore/Washington

mar. 3/11

7:10 pm-10:00 am

1 stop10h 50m

$441

LondonBaltimore

STN - BWI

STNBWI

London Stansted

mar. 3/18

11:00 am-6:00 pm

1 stop11h 00m

Baltimore/Washington

mié. 11/12

6:05 pm-9:55 am

1 stop10h 50m

$442

LondonBaltimore

LGW - BWI

LGWBWI

London Gatwick

jue. 4/24

7:40 am-5:40 pm

1 stop15h 00m

Baltimore/Washington

lun. 4/28

6:50 pm-7:10 pm

2 stops19h 20m

$447

LondonBaltimore

LTN - BWI

LTNBWI

London Luton

mié. 3/26

7:45 am-11:58 pm

2 stops20h 13m

Baltimore/Washington

lun. 3/31

6:50 pm-8:40 pm

2 stops20h 50m

$451

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

jue. 4/24

3:40 pm-7:20 pm

1 stop32h 40m

Washington, D.C. Dulles Intl

mié. 4/30

8:30 pm-11:45 am

1 stop10h 15m

$543

LondonBaltimore

LHR - BWI

LHRBWI

London Heathrow

sáb. 4/26

9:25 pm-7:25 pm

1 stop27h 00m

Baltimore/Washington

lun. 5/5

8:30 pm-8:20 pm

1 stop18h 50m

$545

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

sáb. 3/8

2:30 pm-8:46 am

1 stop23h 16m

Washington, D.C. Dulles Intl

mié. 3/26

6:00 am-8:35 pm

1 stop10h 35m

$564

LondonWashington, D.C.

LGW - DCA

LGWDCA

London Gatwick

mar. 6/3

12:10 pm-6:53 pm

1 stop11h 43m

Washington, D.C. Reagan-National

mar. 7/8

12:40 pm-9:35 am

1 stop15h 55m

$574

LondonWashington, D.C.

LHR - DCA

LHRDCA

London Heathrow

mié. 4/30

8:15 am-10:59 pm

1 stop19h 44m

Washington, D.C. Reagan-National

mar. 5/6

6:30 am-8:45 pm

1 stop9h 15m

$578

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

lun. 3/17

4:30 pm-8:45 pm

Nonstop8h 15m

Washington, D.C. Dulles Intl

mar. 3/25

6:27 am-10:15 am

2 stops23h 48m

$588

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/21

Showing 1-10 of 60 results
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Compare providers for flights from London to Washington, D.C.

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from London to Washington, D.C. in February.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
MytripPrice Accuracy3 starsTrust Score*3 stars
GotogatePrice Accuracy3 starsTrust Score*3 stars
OneTravelPrice Accuracy2 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
PricelinePrice Accuracy1 starTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on London-Washington, D.C. flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on London-Washington, D.C. flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from London-Washington, D.C. flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on London-Washington, D.C. flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for London-Washington, D.C. flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 round-trip 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.

Travel insights for flights from London to Washington, D.C.

Get recent, data-driven insights about flights from London to Washington, D.C. including ideal travel times, pricing trends, and more.

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 round-trip flight from London to Washington, D.C.. Price data was last updated on February 14, 2025.

To ensure you get the cheapest price possible for a flight from London to Washington, D.C., you should look to book at least 71 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, August is the cheapest month in which you can book a flight from London to Washington, D.C. (average of $309). Flying from London to Washington, D.C. in June is currently the most expensive (average of $389). 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?

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 febrero 22, 2025.

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 33% on your trip compared to booking a flight at noon.

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

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

Travelers seeking maximum savings on their London to Washington, D.C. flight should consider departing on Monday at noon when fares are most often at their lowest. Thursday at noon 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.

Explore weekly flight availability from London to Washington, D.C.. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated febrero 22, 2025.

The most flights from LON to WAS are scheduled on a Monday (22 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (17 on average).

Rainfall in Washington, D.C. by month

Plan your trip to Washington, D.C. by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Washington, D.C. ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. when rainfall is around 2.6 in.

Temperature in Washington, D.C. by month

Plan your trip to Washington, D.C. by taking into account the average temperature totals by month.

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 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

Reviews of airlines servicing Washington, D.C.

Get insights into the airlines that provide service to Washington, D.C.. 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 Washington, D.C.. Reviews last updated febrero 22, 2025.
Peruse reviews from past customers who have flown with Delta, KLM and LOT from London to Washington, D.C. to help guide your decision. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
8,203 reviews

Boarding

8.2

Comfort

8.0

Entertainment

7.9

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Delta
8.0
Very good
8,203 reviews
Delta
8.0
Very good
8,203 reviews

Boarding

8.2

Comfort

8.0

Entertainment

7.9

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

KLM
7.8
Good
1,330 reviews
Delta
8.0
Very good
8,203 reviews

Boarding

8.2

Comfort

8.0

Entertainment

7.9

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

LOT
7.6
Good
1,079 reviews
Delta
8.0
Very good
8,203 reviews

Boarding

8.2

Comfort

8.0

Entertainment

7.9

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Finnair
7.6
Good
1,271 reviews
Delta
8.0
Very good
8,203 reviews

Boarding

8.2

Comfort

8.0

Entertainment

7.9

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

SWISS
7.5
Good
1,566 reviews
Delta
8.0
Very good
8,203 reviews

Boarding

8.2

Comfort

8.0

Entertainment

7.9

Crew

8.5

Food

7.3

Overall

8.0

Reviews

1 / 20

10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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.

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

    Flying on PLAY is currently your cheapest option to Washington, D.C., with prices starting at $442. Additional round-trip tickets that might be worth considering are offered by Icelandair and Lufthansa, with the lowest prices starting at $543 and $564, respectively. These flights start at 39% lower than the current average price 3 months from now.

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

    One-way options have recently been found by users for as low as $345 on PLAY. Other airlines that offer cheap prices include WorldTicket from $492 and WestJet from $539 one-way.

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

    While some choose either London Heathrow - Baltimore/Washington or London Gatwick - Washington, D.C. Dulles Intl, London Heathrow - Washington, D.C. Dulles Intl is the most popular route from London to Washington, D.C..

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

    Before booking your flight to Washington, D.C. from London, check out the most reliable airlines to get you to your destination on time: Air Canada (90%), Austrian Airlines (90%), Copa Airlines( 90%).

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

    Looking at all options, your cheapest flight can be booked for $594. While the most popular route (London Heathrow - Washington, D.C. Dulles Intl) can be booked for $518 on average our data indicates $1,388 when flying from London to Washington, D.C..

  • 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 vacation 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, August is the cheapest month in which you can book a flight from London to Washington, D.C. (average of $309). Flying from London to Washington, D.C. in June is currently the most expensive (average of $389). 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

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Arlington
Alexandria
Fairfax
Springfield
Rockville
Tysons
Gaithersburg
Silver Spring
Fredericksburg
Linthicum Heights
Laurel
Falls Church
Woodbridge
Easton
Herndon
Bowie
Reston
National Harbor
Oxon Hill
Gettysburg

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for London to Washington, D.C.

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to Dulles Intl flights
Gatwick to Dulles Intl flights
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Edinburgh to Dulles Intl flights
Manchester to Reagan-National flights
London City to Reagan-National flights
Edinburgh to Reagan-National flights
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Birmingham to Reagan-National flights
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Leeds to Dulles Intl flights
Newcastle upon Tyne to Reagan-National flights
Newcastle upon Tyne to Dulles Intl flights
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Norwich to Dulles Intl flights
Exeter to Dulles Intl flights

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

Discover the top 10 airlines that operate flights from London to Washington, D.C.. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated febrero 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
PLAYCheapest$323Average$492FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$390Average$758FlexibilityNo cancel feeOn-time77%
IcelandairCheapest$486Average$768FlexibilityNo cancel feeOn-time76%
TAP AIR PORTUGALCheapest$564Average$809FlexibilityNo cancel feeOn-timeN/A
IberiaCheapest$586Average$977FlexibilityNo cancel feeOn-time77%
British AirwaysCheapest$595Average$923FlexibilityNo cancel feeOn-time70%
Austrian AirlinesCheapest$608Average$858FlexibilityNo cancel feeOn-time78%
American AirlinesCheapest$619Average$881FlexibilityNo cancel feeOn-time71%
DeltaCheapest$652Average$1,041FlexibilityNo cancel feeOn-timeN/A
Aer LingusCheapest$660Average$816FlexibilityNo cancel feeOn-timeN/A
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