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Cheap flights from London to Washington, D.C. from £226

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 26/2. Fares are subject to change and may not be available on all flights or dates of travel.
LON — WAS
11 Jan — 18 Jan1
1 adult
1 adult, Economy, 0 bags

Cheapflights Tip: The best prices from London to Washington, D.C. are usually found in February or September, booked 53 days in advance, depart on a Thursday or Wednesday and return on a Wednesday

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

Enter your travel dates to find the best prices.

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 12 December 2025.

Tue 30/1209:20LHR - DCA
1 stop11h 29mJetBlue
Sun 18/111:55DCA - LHR
1 stop14h 00mJetBlue
Deal found 10/12£486
Tue 16/1206:00LHR - IAD
1 stop13h 35mTAP AIR PORTUGAL
Mon 19/117:30IAD - LHR
1 stop23h 05mTAP AIR PORTUGAL
Deal found 11/12£503
Sun 14/1216:30LHR - IAD
1 stop27h 45mTAP AIR PORTUGAL
Sun 11/122:30IAD - LHR
1 stop18h 05mTAP AIR PORTUGAL
Deal found 10/12£542
Thu 25/1217:50LHR - IAD
1 stop27h 15mVirgin Atlantic
Wed 31/1222:20IAD - LHR
Nonstop7h 30mVirgin Atlantic
Deal found 10/12£547
Fri 19/1210:40LGW - IAD
1 stop15h 20mTAP AIR PORTUGAL
Mon 26/117:30IAD - LGW
1 stop11h 20mTAP AIR PORTUGAL
Deal found 11/12£556
Fri 19/1208:15LHR - IAD
1 stop17h 45mTAP AIR PORTUGAL
Mon 26/117:30IAD - LHR
1 stop14h 10mTAP AIR PORTUGAL
Deal found 11/12£559
Thu 11/1207:20LGW - IAD
2 stops40h 25mMultiple Airlines
Sat 17/109:33IAD - LGW
1 stop19h 32mMultiple Airlines
Deal found 10/12£565
Wed 24/1209:00LHR - IAD
1 stop12h 35mVirgin Atlantic
Tue 6/122:20IAD - LHR
Nonstop7h 30mVirgin Atlantic
Deal found 10/12£571
Fri 26/1212:30LHR - BWI
1 stop15h 14mVirgin Atlantic
Tue 30/1218:59BWI - LHR
1 stop33h 01mVirgin Atlantic
Deal found 10/12£571
Wed 24/1212:20LHR - DCA
1 stop15h 26mJetBlue
Mon 29/1214:00DCA - LHR
1 stop11h 55mJetBlue
Deal found 10/12£574
Sat 13/1218:00LHR - IAD
1 stop26h 46mUnited Airlines
Sun 14/1218:20IAD - LHR
Nonstop7h 20mUnited Airlines
Deal found 10/12£577
Mon 15/1218:30LHR - IAD
1 stop25h 05mTAP AIR PORTUGAL
Thu 15/117:30IAD - LHR
1 stop23h 05mTAP AIR PORTUGAL
Deal found 10/12£578

Find 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 12 December 2025.

Round-trip from

£467

One-way from

£226

Popular in

July

Cheapest in

February

Average price

£596

Good round-trip deal

£504 or less

Good one-way deal

£569 or less
Icelandair
  • Icelandair
  • 24/1-31/1
  • 2 total stops
  • 21h 35m total
  • London to Washington, D.C.
Search Deals
26/2
  • 26/2
  • 1 total stop
  • 14h 17m total
  • London to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£59 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£9 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from London (LON) to Washington, D.C. (WAS).
Search Deals
Price to beat on a one-way flight from London (LON) to Washington, D.C. (WAS).
Search Deals

Cheapflights Fare Finder

 
Customise 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 858,174 searches. Data last updated 12 December 2025.
Use the filters below to find and compare flights from London to Washington, D.C. that are best for you.

Fly from

London

Fly to

Washington, D.C.

Route

Depart

Return

Price

LondonWashington, D.C.

LGW - DCA

LGWDCA

London Gatwick

Tue 3/2

13:00-22:59

1 stop14h 59m

Washington, D.C. Reagan-National

Fri 6/2

06:15-06:00

1 stop18h 45m

£468

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Mon 20/4

21:25-19:20

1 stop26h 55m

Washington, D.C. Dulles Intl

Sat 25/4

20:30-20:20

1 stop18h 50m

£468

LondonBaltimore

LGW - BWI

LGWBWI

London Gatwick

Thu 5/2

11:55-18:40

1 stop11h 45m

Baltimore/Washington

Thu 26/2

19:40-10:55

1 stop10h 15m

£469

LondonBaltimore

LGW - BWI

LGWBWI

London Gatwick

Fri 23/1

11:55-18:40

1 stop11h 45m

Baltimore/Washington

Tue 27/1

19:40-10:55

1 stop10h 15m

£469

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Thu 15/1

11:55-18:30

1 stop11h 35m

Washington, D.C. Dulles Intl

Sun 1/2

19:40-10:55

1 stop10h 15m

£470

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Tue 13/1

11:55-18:30

1 stop11h 35m

Washington, D.C. Dulles Intl

Mon 26/1

19:40-10:55

1 stop10h 15m

£470

LondonWashington, D.C.

LGW - IAD

LGWIAD

London Gatwick

Tue 13/1

11:55-18:30

1 stop11h 35m

Washington, D.C. Dulles Intl

Fri 30/1

19:40-10:55

1 stop10h 15m

£470

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Mon 12/1

08:30-15:35

1 stop12h 05m

Washington, D.C. Dulles Intl

Thu 15/1

17:05-13:20

1 stop15h 15m

£471

LondonBaltimore

LGW - BWI

LGWBWI

London Gatwick

Mon 12/1

14:00-23:47

1 stop14h 47m

Baltimore/Washington

Sun 18/1

21:58-10:00

1 stop31h 02m

£477

LondonWashington, D.C.

LHR - IAD

LHRIAD

London Heathrow

Fri 23/1

18:40-18:50

1 stop29h 10m

Washington, D.C. Dulles Intl

Mon 26/1

16:50-16:25

2 stops18h 35m

£479

Flights are sorted by cheapest return flights first.

Deals found on 10/12

Showing 1-10 of 60 results
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Best time to book a flight from London to Washington, D.C.

Have a flexible travel schedule? Discover the best time to fly to Washington, D.C. from London with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

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

Use this chart to determine the optimal time to book a return flight from London to Washington, D.C.. Price data was last updated on 5 December 2025.

Booking 53 days in advance of your planned departure date is, on average, the best time to get cheap flights from London to Washington, D.C.. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, February is the cheapest month in which you can book a flight from London to Washington, D.C. (average of £228). Flying from London to Washington, D.C. in July is currently the most expensive (average of £479). 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 12 December 2025.

A simple way to save on the total cost of your ticket is to fly from London to Washington, D.C. in the morning. If you’re flexible enough to do this you can expect to save up to 23% on your trip compared to booking a flight at midday.

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

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

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

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

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 12 December 2025.

The most flights from LON to WAS are scheduled on a Wednesday (26 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (18 on average).

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

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

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

Reykjavik (KEF) – chosen by Cheapflights users on 44% of one-stop itineraries from London to Washington, D.C. on Cheapflights.

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

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

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

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

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

Flights via Amsterdam (AMS) have the shortest average one-way travel time for one-stop routes: 10h 35m.

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

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

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

How often are flights from London to Washington, D.C. delayed?

About 17% of weekly flights between London and Washington, D.C. have experienced delays in the past year, with the average delay time being 131 minutes.

What is the most punctual flight time for London to Washington, D.C. flights?

Historically, flights departing in the evening are less likely to be delayed, whereas flights leaving in the morning tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Monday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on London to Washington, D.C. flights?

Over the past year, Virgin Atlantic have had the lowest number of delays on this route, with just 8% of flights being delayed.

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 12 December 2025.
Check out reviews from past customers who have flown with Virgin Atlantic, Icelandair, andPLAY from London to Washington, D.C. to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Virgin Atlantic
7.5
Good
675 reviews
Check prices

Boarding

7.7

Food

6.9

Entertainment

7.5

Crew

8.2

Comfort

7.3

Overall

7.5

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
Virgin Atlantic
7.5
Good
675 reviews
Virgin Atlantic
7.5
Good
675 reviews
Check prices

Boarding

7.7

Food

6.9

Entertainment

7.5

Crew

8.2

Comfort

7.3

Overall

7.5

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
Icelandair
7.0
Good
589 reviews
Virgin Atlantic
7.5
Good
675 reviews
Check prices

Boarding

7.7

Food

6.9

Entertainment

7.5

Crew

8.2

Comfort

7.3

Overall

7.5

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
PLAY
7.0
Good
Virgin Atlantic
7.5
Good
675 reviews
Check prices

Boarding

7.7

Food

6.9

Entertainment

7.5

Crew

8.2

Comfort

7.3

Overall

7.5

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
Lufthansa
6.8
Okay
7,626 reviews
Virgin Atlantic
7.5
Good
675 reviews
Check prices

Boarding

7.7

Food

6.9

Entertainment

7.5

Crew

8.2

Comfort

7.3

Overall

7.5

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

The flight is clean, food good and the staff are excellent! Very professional, polite and accommodating. The seat itself is really mediocre. Can’t believe there is not inch of storage space. Believe it or not it there is not place even to put away your phone or pen!! Very very surprising and terribly inconvenient. No coat hanger hook either. Had to give it away. ALL IN ALL VERY INCONVENIENT business class seat compared to their peers. What is even more surprising is that this on their relatively new fleet of Airbus A350-1000. I was having com platelets different expectations of Virgin and this has disappointed me. Everything else is just as good and as you would expect from Virgin!
British Airways
6.7
Okay
7,571 reviews
Virgin Atlantic
7.5
Good
675 reviews
Check prices

Boarding

7.7

Food

6.9

Entertainment

7.5

Crew

8.2

Comfort

7.3

Overall

7.5

Reviews

1 / 20
6.0
Good

Pratap,Aug 2025

JFK - LHR

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

Related info for your journey

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

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

    For as low as £482, Icelandair can have you in Washington, D.C. from London in 16h 34m. The distance from London to Washington, D.C. is about 3652 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

    According to our current data, Delta (£189), TAP AIR PORTUGAL (£350), and Icelandair (£373) offers the cheapest pricing from London to Washington, D.C.. Users have found that Delta is 64% cheaper than the other options available to this destination.

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

    For one-way options, check prices for Icelandair. According to our data, you can fly for as low as £327. Users have also found prices from £370 and £386 on TAP AIR PORTUGAL and Aer Lingus, respectively.

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

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

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from London to Washington, D.C. on time: KLM (94%), Air France (93%), Delta (93%).

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

    While on average a flight from London to Washington, D.C. is generally £1,428, our data shows the cheapest flight currently is £450. When looking at the most popular route, (London Heathrow - Washington, D.C. Dulles Intl), you can expect to pay £356 for that flight.

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

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

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

    If you're on a stopover in Reykjavik and looking for things to do, consider visiting Harpa, National Cathedral, or Reykjavik Free Church. Travelers on a layover in Reykjavik can visit Harpa, National Cathedral, and Reykjavik Free Church, by traveling 23.3 mi, 23.0 mi, and 22.9 mi, respectively after landing at Reykjavik Keflavik Intl. Travellers can book a car hire at Reykjavik Keflavik Intl for about £34 per day to make their sightseeing more efficient.

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

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

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

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

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

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

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

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

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

    Currently, February is the cheapest month in which you can book a flight from London to Washington, D.C. (average of £228). Flying from London to Washington, D.C. in July is currently the most expensive (average of £479). 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

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

Book flights to Washington, D.C. if you plan to visit one of these locations
Silver Spring
Hanover
Oxon Hill
Woodbridge
Arlington
Alexandria
College Park

Browse thousands of different options on Cheapflights for your next trip

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

Choose from the following airlines for your flight from London to Washington, D.C.. Flights are based on user searches made on Cheapflights and were last updated on 12 December 2025.
British Airways flights from London to Washington, D.C.
Virgin Atlantic flights from London to Washington, D.C.
Finnair flights from London to Washington, D.C.

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 858,174 searches. Data last updated 12 December 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest£189Average£567FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
PLAYCheapest£268Average£391FlexibilityNo cancel feeOn-timeN/A
Search PLAY flights
IcelandairCheapest£346Average£532FlexibilityNo cancel feeOn-time76%
Search Icelandair flights
TAP AIR PORTUGALCheapest£350Average£483FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
Aer LingusCheapest£384Average£745FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
United AirlinesCheapest£407Average£569FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
JetBlueCheapest£414Average£618FlexibilityNo cancel feeOn-time62%
Search JetBlue flights
LufthansaCheapest£421Average£649FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
FinnairCheapest£423Average£625FlexibilityNo cancel feeOn-time76%
Search Finnair flights
Scandinavian AirlinesCheapest£424Average£576FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights

Fly with Cheapflights

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

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

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

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

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

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

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

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

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

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