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

Scandinavian Airlines, Icelandair, and Virgin Atlantic can get you from State of Washington to London in just under 12h 15m. Your travel time can differ by up to 4h 15m. The distance from State of Washington to London is about 4783 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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.

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).

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 Portland - London Heathrow.

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

On average you can expect to pay £1,118 for a flight from State of Washington to London. The cheapest flight overall is £240 while the most popular route, (Seattle/Tacoma Intl - London Heathrow) is currently priced at £431.

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: SAUDIA (97%), Scandinavian Airlines (90%), KLM (88%).

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.

£191+ Cheap Flights from Washington to London

Cheap flight deals from Washington to London

Enter your travel dates to find the best prices.

Cheapest

Best

Direct

Last-minute

One-way

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 31 August 2026.

Fri 25/915:55 -

1 stop15h 00m

Fri 2/1007:05 -

1 stop14h 40m

Deal found 25/8£539

Mon 19/1015:40 -

1 stop12h 15m

Wed 4/1112:15 -

1 stop12h 45m

Deal found 25/8£543

Sat 3/1015:55 -

1 stop18h 35m

Sat 31/1006:40 -

2 stops20h 24m

Deal found 25/8£544

Thu 24/914:10 -

3 stops33h 55m

Thu 1/1008:45 -

3 stops35h 35m

Deal found 25/8£544

Mon 19/1015:40 -

2 stops21h 55m

Wed 4/1107:05 -

2 stops17h 55m

Deal found 25/8£544

Tue 22/915:55 -

1 stop14h 40m

Tue 29/907:10 -

1 stop14h 35m

Deal found 26/8£545

Sat 26/915:55 -

2 stops16h 30m

Thu 1/1018:40 -

1 stop27h 05m

Deal found 26/8£545

Sun 11/1015:55 -

1 stop21h 45m

Sun 18/1017:30 -

2 stops37h 34m

Deal found 26/8£546

Sat 3/1015:40 -

1 stop12h 15m

Sat 31/1012:15 -

1 stop12h 45m

Deal found 25/8£547

Fri 9/1015:40 -

2 stops18h 20m

Sun 18/1009:20 -

2 stops19h 20m

Deal found 25/8£547

Tue 6/1015:55 -

1 stop16h 05m

Wed 21/1007:05 -

2 stops23h 59m

Deal found 28/8£547

Thu 8/1019:00 -

3 stops30h 20m

Tue 13/1007:05 -

2 stops18h 50m

Deal found 25/8£548

Best flights from Washington to London
Discover carefully curated flight deals from Washington to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 31 August 2026.

Sun 18/1015:40 -

2 stops22h 00m

Tue 3/1107:45 -

2 stops17h 15m

Deal found 26/8£570

Sun 13/915:55 -

2 stops16h 30m

Thu 17/907:05 -

2 stops24h 15m

Deal found 28/8£595

Mon 19/1015:40 -

1 stop12h 15m

Mon 16/1120:35 -

1 stop28h 25m

Deal found 30/8£609

Wed 20/115:25 -

1 stop16h 20m

Wed 27/110:00 -

1 stop13h 13m

Deal found 28/8£643

Mon 19/1019:15 -

1 stop30h 40m

Tue 3/1117:20 -

1 stop32h 50m

Deal found 25/8£652

Tue 6/1013:41 -

1 stop13h 19m

Fri 16/1011:15 -

1 stop18h 34m

Deal found 30/8£663

Tue 2/208:46 -

2 stops18h 04m

Tue 9/206:35 -

2 stops19h 03m

Deal found 26/8£664

Wed 28/1017:45 -

Nonstop9h 55m

Wed 4/1106:30 -

1 stop13h 17m

Deal found 25/8£668

Tue 2/213:39 -

2 stops19h 26m

Tue 9/209:15 -

2 stops21h 57m

Deal found 26/8£686

Fri 11/918:00 -

1 stop16h 50m

Tue 15/910:20 -

1 stop13h 20m

Deal found 25/8£687

Sat 16/118:55 -

Nonstop9h 25m

Sat 30/114:45 -

Nonstop10h 05m

Deal found 28/8£714

Sat 24/1018:45 -

Nonstop9h 35m

Wed 4/1113:35 -

Nonstop10h 15m

Deal found 30/8£751

Tue 22/919:00 -

2 stops16h 15m

Tue 29/906:00 -

2 stops22h 40m

Deal found 25/8£580

Wed 20/107:20 -

2 stops24h 40m

Wed 27/118:40 -

2 stops35h 40m

Deal found 28/8£626

Wed 16/913:05 -

1 stop20h 15m

Wed 23/909:20 -

2 stops22h 34m

Deal found 30/8£660

Tue 20/1008:30 -

2 stops16h 50m

Fri 23/1010:50 -

1 stop14h 09m

Deal found 30/8£671

Wed 28/1016:20 -

1 stop16h 25m

Wed 4/1110:00 -

1 stop13h 14m

Deal found 25/8£676

Thu 24/919:00 -

2 stops18h 50m

Thu 1/1006:00 -

2 stops22h 40m

Deal found 25/8£615

Thu 12/1119:05 -

1 stop30h 50m

Mon 16/1110:55 -

1 stop38h 15m

Deal found 25/8£681

Wed 7/1007:00 -

2 stops21h 35m

Tue 13/1019:15 -

2 stops31h 17m

Deal found 28/8£693

Sun 17/107:20 -

2 stops24h 40m

Fri 29/110:20 -

2 stops20h 00m

Deal found 28/8£636

Thu 31/1216:50 -

Nonstop9h 50m

Mon 18/106:30 -

1 stop13h 20m

Deal found 25/8£705

Thu 17/915:21 -

2 stops14h 29m

Thu 24/906:30 -

1 stop12h 40m

Deal found 30/8£678

Fri 25/915:40 -

2 stops17h 45m

Fri 2/1006:20 -

2 stops19h 35m

Deal found 26/8£617

Wed 25/1114:35 -

1 stop18h 00m

Wed 2/1217:50 -

1 stop26h 00m

Deal found 28/8£686

Mon 11/119:05 -

1 stop30h 50m

Wed 3/210:55 -

1 stop38h 15m

Deal found 28/8£688

Tue 22/907:00 -

2 stops17h 40m

Tue 29/909:15 -

2 stops17h 17m

Deal found 25/8£693

Tue 6/1009:59 -

2 stops20h 41m

Mon 19/1019:40 -

1 stop28h 00m

Deal found 26/8£776

Sat 31/1010:51 -

2 stops24h 39m

Sat 14/1106:40 -

2 stops23h 25m

Deal found 29/8£647

Thu 15/1013:45 -

1 stop11h 45m

Thu 22/1009:20 -

1 stop15h 15m

Deal found 29/8£725

Find flight deals from Washington to London

Round-trip from	£538
One-way from	£191
Popular in	June
Cheapest in	January
Average price	£656
Good round-trip deal	£668 or less
Good one-way deal	£266 or less

25/9-2/10
3 total stops
62h 35m total
Washington to London

Search Deals

31/10
2 total stops
36h 05m total
Washington to London

Search Deals

Highest demand for flights based on searches. 19% potential increase in price (£110 potential increase over avg. return price).

Search Deals

Cheapest flight prices on average. 3% potential price decrease (£17 potential savings vs. average return price).

Search Deals

Average for round-trip flights in August 2026

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SeattleLondon

SEA Seattle/Tacoma Intl - LTN London Luton

SEALTN

Seattle/Tacoma Intl

Sun 18/10

15:40-21:40

2 stops22h 00m

London Luton

Tue 3/11

07:45-17:00

2 stops17h 15m

£570

SeattleLondon

SEA Seattle/Tacoma Intl - LTN London Luton

SEALTN

Seattle/Tacoma Intl

Tue 22/9

19:00-19:15

2 stops16h 15m

London Luton

Tue 29/9

06:00-20:40

2 stops22h 40m

£580

SeattleLondon

SEA Seattle/Tacoma Intl - LHR London Heathrow

SEALHR

Seattle/Tacoma Intl

Sun 13/9

15:55-16:25

2 stops16h 30m

London Heathrow

Thu 17/9

07:05-23:20

2 stops24h 15m

£595

SeattleLondon

SEA Seattle/Tacoma Intl - LHR London Heathrow

SEALHR

Seattle/Tacoma Intl

Mon 19/10

15:40-11:55

1 stop12h 15m

London Heathrow

Mon 16/11

20:35-17:00

1 stop28h 25m

£609

SeattleLondon

SEA Seattle/Tacoma Intl - LTN London Luton

SEALTN

Seattle/Tacoma Intl

Thu 24/9

19:00-21:50

2 stops18h 50m

London Luton

Thu 1/10

06:00-20:40

2 stops22h 40m

£615

SeattleLondon

SEA Seattle/Tacoma Intl - LTN London Luton

SEALTN

Seattle/Tacoma Intl

Fri 25/9

15:40-17:25

2 stops17h 45m

London Luton

Fri 2/10

06:20-17:55

2 stops19h 35m

£617

SeattleLondon

SEA Seattle/Tacoma Intl - LHR London Heathrow

SEALHR

Seattle/Tacoma Intl

Wed 20/1

07:20-16:00

2 stops24h 40m

London Heathrow

Wed 27/1

18:40-22:20

2 stops35h 40m

£626

SeattleLondon

SEA Seattle/Tacoma Intl - LHR London Heathrow

SEALHR

Seattle/Tacoma Intl

Sun 17/1

07:20-16:00

2 stops24h 40m

London Heathrow

Fri 29/1

10:20-22:20

2 stops20h 00m

£636

SeattleLondon

SEA Seattle/Tacoma Intl - LGW London Gatwick

SEALGW

Seattle/Tacoma Intl

Wed 20/1

15:25-15:45

1 stop16h 20m

London Gatwick

Wed 27/1

10:00-15:13

1 stop13h 13m

£643

SeattleLondon

SEA Seattle/Tacoma Intl - LHR London Heathrow

SEALHR

Seattle/Tacoma Intl

Sat 31/10

10:51-18:30

2 stops24h 39m

London Heathrow

Sat 14/11

06:40-22:05

2 stops23h 25m

£647

Flights are sorted by cheapest return flights first.

Deals found on 30/8

Showing 1-10 of 60 resultsSorted by cheapest first

...

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.

PDX-STN

PDX-LTN

PDX-LGW

PDX-LHR

SEA-LGW

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

USWA-LON

PDX-STN

PDX-LTN

PDX-LGW

PDX-LHR

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

Currently, January is the cheapest month in which you can book a flight from State of Washington to London (average of £488). Flying from State of Washington to London in June is currently the most expensive (average of £899). 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?

When flying from State of Washington to London, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from State of Washington to London

The most flights from USWA to LON are scheduled on a Friday (25 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (14 on average).

How much does it cost for a return flight from State of Washington to London?

Airfare is typical for this route at the moment.

State of Washington to London flights typically cost between £526 and £751 in September.
The cheapest return price found within the last 5 days was £538 on Multiple Airlines (25 Sept–2 Oct).

How far ahead should I book a flight from State of Washington to London?

The best time to book flights from State of Washington to London is 51 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.

Related info for your journey

How long is the flight from State of Washington to London?
Scandinavian Airlines, Icelandair, and Virgin Atlantic can get you from State of Washington to London in just under 12h 15m. Your travel time can differ by up to 4h 15m. The distance from State of Washington to London is about 4783 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.
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 Portland - London Heathrow.
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: SAUDIA (97%), Scandinavian Airlines (90%), KLM (88%).
What are the cheapest flights from State of Washington to London?
On average you can expect to pay £1,118 for a flight from State of Washington to London. The cheapest flight overall is £240 while the most popular route, (Seattle/Tacoma Intl - London Heathrow) is currently priced at £431.
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, January is the cheapest month in which you can book a flight from State of Washington to London (average of £488). Flying from State of Washington to London in June is currently the most expensive (average of £899). 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

Milton Keynes

Luton

Gatwick

Wembley

Ilford

Slough

Hayes

Croydon

Colchester

Eastbourne

Brentford

Barnet

Southall

Southend-on-Sea

Enfield

Kingston upon Thames

Watford

Dover

Ipswich

Browse thousands of different options on Cheapflights for your next trip

Alternative routes

Complete your trip

Direct flights to England

Flights by cabin class

London flight routes

Other flight options

Popular flights

Top destinations

Alternative routes for Washington to London

Newark to Heathrow flights

John F Kennedy Intl to Heathrow flights

Newark to Gatwick flights

LaGuardia to Heathrow flights

Dulles Intl to Heathrow flights

Boston to Heathrow flights

John F Kennedy Intl to Stansted flights

John F Kennedy Intl to London City flights

Baltimore to Heathrow flights

Los Angeles to Heathrow flights

San Francisco to Heathrow flights

O'Hare Intl to Heathrow flights

LaGuardia to Gatwick flights

John F Kennedy Intl to Gatwick flights

Dallas/Fort Worth to Heathrow flights

Newark to London City flights

Newark to Stansted flights

Atlanta to Heathrow flights

Newark to Luton flights

Seattle to Heathrow flights

Orlando to Heathrow flights

Reagan-National to Heathrow flights

Dulles Intl to Gatwick flights

Philadelphia to Heathrow flights

Boston to London City flights

Miami to Heathrow flights

Denver to Heathrow flights

Dulles Intl to London City flights

Boston to Gatwick flights

Hobby to Heathrow flights

Boston to Stansted flights

Los Angeles to Gatwick flights

John F Kennedy Intl to Edinburgh flights

O'Hare Intl to Gatwick flights

Newark to Edinburgh flights

Sky Harbor Intl to Heathrow flights

O'Hare Intl to Stansted flights

Baltimore to Gatwick flights

Los Angeles to London City flights

Los Angeles to Stansted flights

George Bush Intcntl to Heathrow flights

San Francisco to Gatwick flights

O'Hare Intl to London City flights

Reagan-National to Gatwick flights

San Francisco to London City flights

Raleigh to Heathrow flights

San Francisco to Stansted flights

Austin to Heathrow flights

Top 3 airlines flying from Washington to London

Airline	Cheapest	Average	Flexibility	On-time
British Airways	Cheapest£457	Average£651	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Alaska Airlines	Cheapest£487	Average£725	FlexibilityNo cancel fee	On-time75%	Search Alaska Airlines flights
Virgin Atlantic	Cheapest£494	Average£619	FlexibilityNo cancel fee	On-time72%	Search Virgin Atlantic flights

Fly with Cheapflights

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.

Cheap flights from Washington to London from £191

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 31/10. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Washington to London

Cheapest flights from Washington to LondonExplore 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 31 August 2026.

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 31 August 2026.

Best flights from Washington to LondonDiscover carefully curated flight deals from Washington to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 31 August 2026.

Discover carefully curated flight deals from Washington to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 31 August 2026.

Direct flights from Washington to LondonExplore direct flight options from Washington to London based on user searches, and compare prices and availability for your desired travel dates. Data last updated 31 August 2026.

Explore direct flight options from Washington to London based on user searches, and compare prices and availability for your desired travel dates. Data last updated 31 August 2026.

Last-minute flights from Washington to LondonDiscover last-minute flight deals from Washington to London. Data last updated 31 August 2026 and is based on user searches.

Discover last-minute flight deals from Washington to London. Data last updated 31 August 2026 and is based on user searches.

One-way flights from Washington to LondonSearch for one-way flight options from Washington to London. Find affordable one-way fares based on user searches. Data last updated 31 August 2026.

Search for one-way flight options from Washington to London. Find affordable one-way fares based on user searches. Data last updated 31 August 2026.

Find flight deals from Washington to London

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Cheapflights Fare Finder

Use the filters below to find and compare flights from Washington to London that are best for you.

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.

Cheapflights Insights

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

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 31 August 2026.

When flying from State of Washington to London, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 31 August 2026.

The most flights from USWA to LON are scheduled on a Friday (25 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (14 on average).

How much does it cost for a return flight from State of Washington to London?

Airfare is typical for this route at the moment.

State of Washington to London flights typically cost between £526 and £751 in September.The cheapest return price found within the last 5 days was £538 on Multiple Airlines (25 Sept–2 Oct).

How far ahead should I book a flight from State of Washington to London?

The best time to book flights from State of Washington to London is 51 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.

Related info for your journey

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

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

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

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

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

How can I find direct flights from Washington to London?

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

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

Travelling to a place near London?

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.

Complete your trip

Complete your trip to London by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to England

Book a non-stop flight to one of these other cities located in England.

Search flights from Washington to London by cabin class

Find flights from Washington to London, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Other flights to London

Explore flights to London departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 31 August 2026.

Washington and London flights

Browse other Washington and London flight options. Last updated on 31 August 2026.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2026

Washington to London flights

Consider these flights travelling from Washington to London.

Top 3 airlines flying from Washington to London

Fly with Cheapflights

How does Cheapflights help users find flights from Washington to London?

Why should you use Cheapflights to find cheap flight tickets from Washington to London?

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

Can Cheapflights notify me if prices for flights from Washington to London become cheaper?

100% Free

Book with Flexibility

Travel Smart

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 31 August 2026.

Best flights from Washington to London
Discover carefully curated flight deals from Washington to London that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 31 August 2026.

Direct flights from Washington to London
Explore direct flight options from Washington to London based on user searches, and compare prices and availability for your desired travel dates. Data last updated 31 August 2026.

Last-minute flights from Washington to London
Discover last-minute flight deals from Washington to London. Data last updated 31 August 2026 and is based on user searches.

One-way flights from Washington to London
Search for one-way flight options from Washington to London. Find affordable one-way fares based on user searches. Data last updated 31 August 2026.

State of Washington to London flights typically cost between £526 and £751 in September.
The cheapest return price found within the last 5 days was £538 on Multiple Airlines (25 Sept–2 Oct).