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Cheap flights from London Stansted Airport to Washington from £400

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 1/9. Fares are subject to change and may not be available on all flights or dates of travel.
STN — SEA
20 Jul — 27 Jul1
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 15 July 2025.

Round-trip from

£492

One-way from

£400

Popular in

August

Cheapest in

January

Average price

£706
13/8-20/8
  • 13/8-20/8
  • 4 total stops
  • 46h 05m total
  • London to Washington
1/9
  • 1/9
  • 3 total stops
  • 29h 14m total
  • London to Washington
Highest demand for flights based on searches. 14% potential increase in price (£67 potential increase over avg. return price).
Cheapest flight prices on average. 2% potential price decrease (£12 potential savings vs. average return price).
Average for round-trip flights in July 2025

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 15 July 2025.

Wed 13/818:45STN - SEA
2 stops29h 15mMultiple Airlines
Wed 20/819:00SEA - STN
2 stops16h 50mMultiple Airlines
Deal found 14/7£492
Sat 20/907:50STN - PDX
3 stops18h 56mMultiple Airlines
Sun 28/913:45PDX - STN
2 stops16h 55mMultiple Airlines
Deal found 14/7£674

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 15 July 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

Wed 13/8

18:45-16:00

2 stops29h 15m

Seattle/Tacoma Intl

Wed 20/8

19:00-19:50

2 stops16h 50m

£492

LondonPortland

STN - PDX

STNPDX

London Stansted

Sat 20/9

07:50-18:46

3 stops18h 56m

Portland

Sun 28/9

13:45-14:40

2 stops16h 55m

£674

LondonSeattle

STN - SEA

STNSEA

London Stansted

Mon 1/9

22:00-19:14

3 stops29h 14m

£400

LondonPortland

STN - PDX

STNPDX

London Stansted

Sat 11/10

07:10-23:01

3 stops23h 51m

£419

Flights are sorted by cheapest return flights first.

Deals found on 14/7

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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