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Cheap flights from London Stansted Airport to Washington from £286

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 15/4. Fares are subject to change and may not be available on all flights or dates of travel.
STN — SEA
20 Feb — 27 Feb1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Stansted to Washington

Enter your travel dates to find the best prices.

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 21 January 2026.

Tue 17/206:30
STN
-
SEA
2 stops18h 30m
Multiple Airlines
Tue 24/214:35
SEA
-
STN
2 stops15h 45m
Multiple Airlines
Deal found 20/1£396
Mon 2/206:10
STN
-
SEA
2 stops18h 50m
Multiple Airlines
Mon 16/214:35
SEA
-
STN
2 stops15h 55m
Multiple Airlines
Deal found 20/1£418
Thu 5/310:55
STN
-
SEA
2 stops33h 15m
Multiple Airlines
Thu 12/315:00
SEA
-
STN
2 stops26h 15m
Multiple Airlines
Deal found 19/1£419
Fri 6/206:30
STN
-
SEA
2 stops18h 30m
Multiple Airlines
Mon 9/214:35
SEA
-
STN
2 stops19h 45m
Multiple Airlines
Deal found 19/1£437
Thu 30/406:30
STN
-
SEA
3 stops21h 58m
Multiple Airlines
Sun 10/515:40
SEA
-
STN
2 stops17h 35m
Multiple Airlines
Deal found 20/1£480
Tue 28/407:05
STN
-
SEA
2 stops16h 55m
Multiple Airlines
Mon 4/518:55
SEA
-
STN
1 stop18h 25m
Multiple Airlines
Deal found 20/1£486
Tue 28/407:05
STN
-
SEA
2 stops16h 55m
Multiple Airlines
Tue 12/518:55
SEA
-
STN
1 stop14h 40m
Multiple Airlines
Deal found 20/1£487
Thu 30/406:30
STN
-
SEA
3 stops21h 58m
Multiple Airlines
Mon 11/515:00
SEA
-
STN
3 stops23h 10m
Multiple Airlines
Deal found 20/1£505
Thu 9/406:30
STN
-
PDX
3 stops34h 45m
Multiple Airlines
Sun 12/415:15
PDX
-
STN
3 stops24h 05m
Multiple Airlines
Deal found 19/1£796
Sat 8/822:00
STN
-
PDX
3 stops43h 31m
Multiple Airlines
Tue 18/810:10
PDX
-
STN
2 stops25h 25m
Multiple Airlines
Deal found 19/1£915
Mon 16/220:00
STN
-
PDX
3 stops30h 30m
Multiple Airlines
Mon 23/209:50
PDX
-
STN
3 stops27h 55m
Multiple Airlines
Deal found 19/1£962
Mon 27/706:30
STN
-
PDX
3 stops35h 01m
Multiple Airlines
Sun 16/819:05
PDX
-
STN
2 stops16h 50m
Multiple Airlines
Deal found 19/1£1,007

Find flight deals from Stansted to Washington

Keep the following information in mind while searching for Stansted to Washington flight deals. Data was last updated 21 January 2026.

Round-trip from

£396

One-way from

£286

Popular in

July

Cheapest in

February

Average price

£479
17/2-24/2
  • 17/2-24/2
  • 4 total stops
  • 34h 15m total
  • London to Washington
Search Deals
15/4
  • 15/4
  • 2 total stops
  • 37h 34m 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 (£9 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

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 21 January 2026.
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

Mon 2/2

06:10-17:00

2 stops18h 50m

Seattle/Tacoma Intl

Mon 16/2

14:35-14:30

2 stops15h 55m

£418

LondonSeattle

STN - SEA

STNSEA

London Stansted

Mon 27/4

06:30-20:28

3 stops21h 58m

Seattle/Tacoma Intl

Mon 4/5

09:55-20:35

3 stops26h 40m

£542

LondonSeattle

STN - SEA

STNSEA

London Stansted

Fri 1/5

22:50-20:28

3 stops29h 38m

Seattle/Tacoma Intl

Tue 12/5

14:10-16:00

2 stops17h 50m

£631

LondonSeattle

STN - SEA

STNSEA

London Stansted

Mon 23/3

06:10-18:00

2 stops18h 50m

Seattle/Tacoma Intl

Sun 29/3

15:40-23:20

3 stops23h 40m

£631

LondonSeattle

STN - SEA

STNSEA

London Stansted

Sat 4/4

08:30-22:10

3 stops21h 40m

Seattle/Tacoma Intl

Sun 12/4

15:40-17:15

2 stops17h 35m

£655

LondonSeattle

STN - SEA

STNSEA

London Stansted

Fri 3/4

06:40-17:55

2 stops19h 15m

Seattle/Tacoma Intl

Sun 12/4

15:40-17:15

2 stops17h 35m

£663

LondonSeattle

STN - SEA

STNSEA

London Stansted

Sat 2/5

22:00-13:08

3 stops47h 08m

Seattle/Tacoma Intl

Mon 11/5

18:55-20:55

2 stops18h 00m

£677

LondonSeattle

STN - SEA

STNSEA

London Stansted

Mon 4/5

10:50-17:15

1 stop38h 25m

Seattle/Tacoma Intl

Fri 8/5

19:10-22:10

1 stop19h 00m

£699

LondonSeattle

STN - SEA

STNSEA

London Stansted

Sat 25/4

17:45-17:15

1 stop31h 30m

Seattle/Tacoma Intl

Sat 2/5

19:10-09:55

1 stop30h 45m

£709

LondonSeattle

STN - SEA

STNSEA

London Stansted

Fri 24/4

06:15-17:15

1 stop19h 00m

Seattle/Tacoma Intl

Mon 4/5

19:10-22:10

1 stop19h 00m

£720

Flights are sorted by cheapest return flights first.

Deals found on 20/1

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.

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Alternative routes for Stansted to Washington

See prices for flight routes from nearby airports that may be better suited for you.
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