Find flights
Deals
When to book
FAQs

Cheap flights from Washington to London from £214

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 18/1. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — LON
8 Jan — 15 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Washington to London

Enter your travel dates to find the best prices.

Cheapest flights from Washington to London
Explore the most affordable flight options available from Washington to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 9 December 2025.

Tue 30/1207:30PDX - LHR
1 stop15h 55mLufthansa
Sun 8/211:10LHR - PDX
2 stops21h 29mLufthansa
Deal found 8/12£497
Tue 30/1206:50PDX - LHR
1 stop22h 00mDelta
Sun 8/206:30LHR - PDX
1 stop12h 55mDelta
Deal found 8/12£518
Tue 30/1219:00PDX - LHR
2 stops31h 10mMultiple Airlines
Sun 8/209:00LHR - PDX
2 stops21h 32mMultiple Airlines
Deal found 7/12£521
Wed 31/1210:05SEA - LHR
2 stops16h 05mLufthansa
Mon 12/118:30LHR - SEA
2 stops31h 44mLufthansa
Deal found 8/12£529
Wed 24/1205:50SEA - LHR
1 stop22h 00mMultiple Airlines
Wed 21/106:35LHR - SEA
1 stop14h 45mMultiple Airlines
Deal found 8/12£536
Tue 9/1210:50PDX - LHR
1 stop16h 25mLufthansa
Tue 13/107:30LHR - PDX
2 stops18h 40mLufthansa
Deal found 7/12£545
Tue 9/1210:05SEA - STN
3 stops26h 25mMultiple Airlines
Sun 14/1206:15STN - SEA
2 stops24h 01mMultiple Airlines
Deal found 7/12£551
Wed 24/1205:50SEA - LHR
1 stop22h 00mUnited Airlines
Wed 21/106:50LHR - SEA
2 stops19h 24mUnited Airlines
Deal found 8/12£552
Mon 8/1215:15PDX - LHR
2 stops34h 55mAir Canada
Wed 24/1215:00LHR - PDX
2 stops31h 40mAir Canada
Deal found 8/12£552
Tue 9/1210:05SEA - STN
3 stops26h 25mMultiple Airlines
Sat 13/1220:25STN - SEA
2 stops33h 51mMultiple Airlines
Deal found 7/12£554
Wed 31/1205:50SEA - LHR
1 stop22h 00mUnited Airlines
Mon 12/111:30LHR - SEA
2 stops41h 42mUnited Airlines
Deal found 7/12£560
Tue 9/1210:05PDX - LHR
1 stop15h 55mDelta
Fri 16/106:30LHR - PDX
1 stop12h 55mDelta
Deal found 7/12£563

Find flight deals from Washington to London

Keep the following information in mind while searching for Washington to London flight deals. Data was last updated 9 December 2025.

Round-trip from

£437

One-way from

£214

Popular in

June

Cheapest in

November

Average price

£726

Good round-trip deal

£829 or less

Good one-way deal

£326 or less
Icelandair
  • Icelandair
  • 12/5-4/6
  • 2 total stops
  • 24h 40m total
  • Washington to London
Search Deals
18/1
  • 18/1
  • 2 total stops
  • 41h 21m total
  • Washington to London
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (£79 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£13 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 Washington to London (LON).
Search Deals
Price to beat on a one-way flight from Washington to London (LON).
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Washington to London 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 9 December 2025.
Use the filters below to find and compare flights from Washington to London that are best for you.

Fly from

Washington

Fly to

London

Route

Depart

Return

Price

SeattleLondon

SEA - STN

SEASTN

Seattle/Tacoma Intl

Wed 21/1

05:50-19:40

3 stops29h 50m

London Stansted

Wed 28/1

14:25-12:10

2 stops29h 45m

£439

SeattleLondon

SEA - STN

SEASTN

Seattle/Tacoma Intl

Sat 21/2

14:35-23:10

2 stops24h 35m

London Stansted

Sat 28/2

07:15-17:00

2 stops17h 45m

£446

SpokaneLondon

GEG - LHR

GEGLHR

Spokane

Tue 17/2

07:00-07:25

1 stop16h 25m

London Heathrow

Wed 25/2

06:35-21:07

2 stops22h 32m

£448

SeattleLondon

SEA - LGW

SEALGW

Seattle/Tacoma Intl

Mon 9/3

15:35-10:55

1 stop12h 20m

London Gatwick

Mon 16/3

11:55-18:00

1 stop13h 05m

£449

PortlandLondon

PDX - LGW

PDXLGW

Portland

Mon 11/5

15:30-11:45

1 stop12h 15m

London Gatwick

Thu 28/5

15:40-17:55

1 stop34h 15m

£449

SeattleLondon

SEA - LTN

SEALTN

Seattle/Tacoma Intl

Fri 23/1

08:10-23:00

3 stops30h 50m

London Luton

Fri 30/1

09:00-12:10

3 stops35h 10m

£450

PortlandLondon

PDX - LHR

PDXLHR

Portland

Mon 2/3

10:24-18:30

2 stops24h 06m

London Heathrow

Sun 8/3

10:20-22:23

2 stops19h 03m

£451

PortlandLondon

PDX - STN

PDXSTN

Portland

Tue 10/3

15:45-21:20

2 stops22h 35m

London Stansted

Wed 18/3

08:30-18:00

2 stops16h 30m

£453

PortlandLondon

PDX - LHR

PDXLHR

Portland

Mon 16/3

13:09-21:35

3 stops25h 26m

London Heathrow

Thu 23/4

07:05-21:35

2 stops22h 30m

£454

SeattleLondon

SEA - LHR

SEALHR

Seattle/Tacoma Intl

Sat 14/2

08:10-20:35

2 stops28h 25m

London Heathrow

Mon 23/2

11:05-19:03

2 stops39h 58m

£459

Flights are sorted by cheapest return flights first.

Deals found on 7/12

Showing 1-10 of 60 results
1
2
3
...
6

Best time to book a flight from Washington to London

Have a flexible travel schedule? Discover the best time to fly to London from Washington 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 to London

What is the cheapest month to book a flight from State of Washington to London?

Currently, May is the cheapest month in which you can book a flight from State of Washington to London (average of £371). Flying from State of Washington to London in June is currently the most expensive (average of £592). 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 WA to LON?

Find hourly flight availability from Washington 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 9 December 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 22% on flights from State of Washington to London by exploring options for tickets in the afternoon.

Weekly flight availability from State of Washington to London

Explore weekly flight availability from Washington to London. 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 9 December 2025.

The most flights from USWA to LON are scheduled on a Saturday (21 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (9 on average).

Related info for your journey

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

  • How long is the flight from State of Washington to London?

    Lufthansa, Icelandair, and Scandinavian Airlines can get you from State of Washington to London in just under 12h 20m. Your travel time can differ by up to 11h 46m. The distance from State of Washington to London is about 4807 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 to fly from State of Washington to London one-way?

    To fly one-way, consider booking your trip with Icelandair, which is currently one of the cheapest options available, starting at £165. Virgin Atlantic flights start at £294 while deals on British Airways start at £295 one-way.

  • What are the most popular routes from State of Washington to London?

    The most popular route from State of Washington to London is Seattle/Tacoma Intl - London Heathrow. You may also consider Seattle/Tacoma Intl - London Gatwick or Seattle/Tacoma Intl - London City.

  • What are the most reliable airlines from State of Washington to London?

    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 State of Washington to London on time: KLM (87%), Delta (85%), Virgin Atlantic (85%).

  • What are the cheapest flights from State of Washington to London?

    On average you can expect to pay £805 for a flight from State of Washington to London. The cheapest flight overall is £287 while the most popular route, (Seattle/Tacoma Intl - London Heathrow) is currently priced at £358.

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

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

  • How can I find direct flights from Washington to London?

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

  • Can I find deals for business class flights from Washington to London?

    Yes. Cheapflights offers flight deals from Washington 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 State of Washington to London?

    Currently, May is the cheapest month in which you can book a flight from State of Washington to London (average of £371). Flying from State of Washington to London in June is currently the most expensive (average of £592). 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 London?

Book flights to London if you plan to visit one of these locations
Milton Keynes
Croydon
Hounslow
Slough
Gatwick
Luton
Ilford
Wembley
Colchester
Brentford
Watford
Hayes
Crawley
Deal
Winchester
Romford
Bedford
Chichester
Guildford
Ipswich

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Washington to London

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Heathrow flights
Newark to Heathrow flights
John F Kennedy Intl to Gatwick flights
Boston to Heathrow flights
Los Angeles to Heathrow flights
LaGuardia to Heathrow flights
John F Kennedy Intl to London City flights
Newark to Gatwick flights
Dulles Intl to Heathrow flights
San Francisco to Heathrow flights
John F Kennedy Intl to Stansted flights
LaGuardia to Gatwick flights
O'Hare Intl to Heathrow flights
Baltimore to Heathrow flights
Dallas/Fort Worth to Heathrow flights
Newark to London City flights
Seattle to Heathrow flights
Newark to Stansted flights
Boston to Gatwick flights
Miami to Heathrow flights
Newark to Luton flights
Boston to London City flights
Atlanta to Heathrow flights
Orlando to Heathrow flights
Dulles Intl to Gatwick flights
Hobby to Heathrow flights
John F Kennedy Intl to Edinburgh flights
Denver to Heathrow flights
Reagan-National to Heathrow flights
Philadelphia to Heathrow flights
O'Hare Intl to Gatwick flights
Newark to Edinburgh flights
Los Angeles to Gatwick flights
Dulles Intl to London City flights
Minneapolis to Heathrow flights
San Francisco to Gatwick flights
Los Angeles to London City flights
Tampa to Heathrow flights
Boston to Stansted flights
San Francisco to London City flights
Reagan-National to Gatwick flights
Baltimore to Gatwick flights
O'Hare Intl to London City flights
George Bush Intcntl to Heathrow flights
Charlotte to Heathrow flights
Boston to Edinburgh flights
Detroit to Heathrow flights
Dulles Intl to Edinburgh flights

Top 2 airlines flying from Washington to London

Discover the top 2 airlines that operate flights from Washington to London. 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 9 December 2025.
AirlineCheapestAverageFlexibilityOn-time
British AirwaysCheapest£356Average£523FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Virgin AtlanticCheapest£371Average£572FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic 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 Washington to London?

When you search for this flight from Washington to London, 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 Washington to London?

Millions of users choose and trust Cheapflights to book the best flight deals from Washington to London for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

Can Cheapflights find flights from Washington to London with no change fees?

Yes! Cheapflights helps users easily find flights from Washington to London with no change fees.

Can Cheapflights notify me if prices for flights from Washington 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 today and book when prices fit your budget.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.