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Cheap flights from London Stansted Airport to Washington from £371

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 29/9. Fares are subject to change and may not be available on all flights or dates of travel.
STN — SEA
3 Sep — 10 Sep1
1 adult

Cheap flight deals from Stansted to Washington

Keep the following information in mind while searching for Stansted to Washington flight deals. Data was last updated 29 August 2025.

Round-trip from

£476

One-way from

£371

Popular in

August

Cheapest in

January

Average price

£696
19/10-24/10
  • 19/10-24/10
  • 4 total stops
  • 37h 25m total
  • London to Washington
Search Deals
29/9
  • 29/9
  • 3 total stops
  • 53h 44m total
  • London to Washington
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 (£11 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2025
Search Deals

Find flight deals from Stansted to Washington

Cheapest flights from Stansted to Washington
Explore the most affordable flight options available from Stansted to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 29 August 2025.

Sun 19/1007:15STN - SEA
2 stops21h 25mMultiple Airlines
Fri 24/1015:45SEA - STN
2 stops16h 00mMultiple Airlines
Deal found 27/8£476
Thu 23/1007:55STN - SEA
2 stops17h 55mMultiple Airlines
Thu 30/1015:35SEA - STN
2 stops25h 05mMultiple Airlines
Deal found 27/8£484
Thu 9/1018:55STN - SEA
3 stops27h 21mMultiple Airlines
Fri 17/1014:20SEA - STN
2 stops18h 55mMultiple Airlines
Deal found 27/8£487
Sun 12/1009:45STN - SEA
1 stop16h 05mMultiple Airlines
Sun 19/1019:35SEA - STN
1 stop17h 40mMultiple Airlines
Deal found 28/8£508
Wed 17/908:15STN - SEA
2 stops20h 14mMultiple Airlines
Tue 7/1014:05SEA - STN
2 stops18h 30mMultiple Airlines
Deal found 27/8£526
Wed 24/908:15STN - PDX
3 stops22h 46mMultiple Airlines
Wed 1/1006:15PDX - STN
3 stops29h 45mMultiple Airlines
Deal found 27/8£555
Fri 26/906:40STN - SEA
3 stops23h 36mMultiple Airlines
Mon 29/908:40SEA - STN
2 stops25h 40mMultiple Airlines
Deal found 28/8£561
Mon 20/1018:25STN - PDX
3 stops33h 11mMultiple Airlines
Fri 24/1015:20PDX - STN
2 stops22h 00mMultiple Airlines
Deal found 28/8£571
Sat 27/906:35STN - SEA
2 stops22h 05mMultiple Airlines
Wed 1/1015:45SEA - STN
2 stops22h 45mMultiple Airlines
Deal found 27/8£582
Sun 28/909:45STN - SEA
3 stops20h 31mMultiple Airlines
Tue 30/907:05SEA - STN
3 stops25h 30mMultiple Airlines
Deal found 27/8£585
Mon 22/908:30STN - PDX
3 stops22h 31mMultiple Airlines
Mon 6/1013:45PDX - STN
2 stops20h 35mMultiple Airlines
Deal found 27/8£591
Mon 15/906:25STN - SEA
3 stops44h 56mMultiple Airlines
Sun 21/916:20SEA - STN
2 stops20h 50mMultiple Airlines
Deal found 27/8£603

Cheapflights Fare Finder

 
Customise your flight search to find flights from Stansted to Washington 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 29 August 2025.
Use the filters below to find and compare flights from London Stansted Airport to Washington that are best for you.

Fly from

Stansted

Fly to

Washington

Route

Depart

Return

Price

LondonSeattle

STN - SEA

STNSEA

London Stansted

Sun 19/10

07:15-20:40

2 stops21h 25m

Seattle/Tacoma Intl

Fri 24/10

15:45-15:45

2 stops16h 00m

£476

LondonSeattle

STN - SEA

STNSEA

London Stansted

Thu 23/10

07:55-17:50

2 stops17h 55m

Seattle/Tacoma Intl

Thu 30/10

15:35-23:40

2 stops25h 05m

£484

LondonSeattle

STN - SEA

STNSEA

London Stansted

Thu 9/10

18:55-14:16

3 stops27h 21m

Seattle/Tacoma Intl

Fri 17/10

14:20-17:15

2 stops18h 55m

£487

LondonSeattle

STN - SEA

STNSEA

London Stansted

Sun 12/10

09:45-17:50

1 stop16h 05m

Seattle/Tacoma Intl

Sun 19/10

19:35-21:15

1 stop17h 40m

£508

LondonSeattle

STN - SEA

STNSEA

London Stansted

Wed 17/9

08:15-20:29

2 stops20h 14m

Seattle/Tacoma Intl

Tue 7/10

14:05-16:35

2 stops18h 30m

£526

LondonPortland

STN - PDX

STNPDX

London Stansted

Wed 24/9

08:15-23:01

3 stops22h 46m

Portland

Wed 1/10

06:15-20:00

3 stops29h 45m

£555

LondonSeattle

STN - SEA

STNSEA

London Stansted

Fri 26/9

06:40-22:16

3 stops23h 36m

Seattle/Tacoma Intl

Mon 29/9

08:40-18:20

2 stops25h 40m

£561

LondonPortland

STN - PDX

STNPDX

London Stansted

Mon 20/10

18:25-19:36

3 stops33h 11m

Portland

Fri 24/10

15:20-21:20

2 stops22h 00m

£571

LondonSeattle

STN - SEA

STNSEA

London Stansted

Sat 27/9

06:35-20:40

2 stops22h 05m

Seattle/Tacoma Intl

Wed 1/10

15:45-22:30

2 stops22h 45m

£582

LondonSeattle

STN - SEA

STNSEA

London Stansted

Sun 28/9

09:45-22:16

3 stops20h 31m

Seattle/Tacoma Intl

Tue 30/9

07:05-16:35

3 stops25h 30m

£585

Flights are sorted by cheapest return flights first.

Deals found on 28/8

Showing 1-10 of 37 results
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Best time to book a flight from Stansted to Washington

Have a flexible travel schedule? Discover the best time to fly to Washington from Stansted 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 Stansted Airport to Washington
No data available for this route at this time. Please check back soon.

Related info for your journey

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

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from London Stansted Airport to State of Washington (average of £622). Flying from London Stansted Airport to State of Washington in July is currently the most expensive (average of £946). 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.

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Alternative routes for Stansted to Washington

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