Find flights
When to book

Cheap flights from London Stansted Airport to Washington from £368

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 15/10. Fares are subject to change and may not be available on all flights or dates of travel.
STN — SEA
17 Oct — 24 Oct1
1 adult
1 adult, Economy

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 17 September 2025.

Round-trip from

£452

One-way from

£368

Popular in

July

Cheapest in

January

Average price

£496
8/10-13/10
  • 8/10-13/10
  • 4 total stops
  • 53h 20m total
  • London to Washington
Search Deals
15/10
  • 15/10
  • 2 total stops
  • 35h 20m total
  • London to Washington
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£60 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 September 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 17 September 2025.

Wed 8/1008:20STN - SEA
2 stops35h 35mMultiple Airlines
Mon 13/1014:20SEA - STN
2 stops17h 45mMultiple Airlines
Deal found 15/9£452
Thu 30/1006:15STN - SEA
2 stops18h 45mMultiple Airlines
Thu 6/1114:35SEA - STN
2 stops18h 55mMultiple Airlines
Deal found 15/9£453
Thu 30/1005:55STN - SEA
2 stops19h 05mMultiple Airlines
Thu 13/1114:35SEA - STN
2 stops21h 10mMultiple Airlines
Deal found 14/9£461
Fri 3/1008:15STN - SEA
3 stops33h 06mMultiple Airlines
Thu 16/1013:50SEA - STN
2 stops24h 35mMultiple Airlines
Deal found 16/9£464
Mon 3/1106:30STN - SEA
2 stops18h 30mMultiple Airlines
Sun 16/1114:35SEA - STN
2 stops24h 25mMultiple Airlines
Deal found 15/9£469
Wed 15/1006:10STN - SEA
2 stops19h 40mMultiple Airlines
Mon 20/1015:45SEA - STN
2 stops22h 25mMultiple Airlines
Deal found 15/9£483
Mon 8/1206:30STN - SEA
2 stops18h 30mMultiple Airlines
Sun 14/1214:35SEA - STN
2 stops24h 25mMultiple Airlines
Deal found 15/9£488
Fri 17/1006:40STN - SEA
2 stops15h 36mMultiple Airlines
Mon 20/1014:20SEA - STN
2 stops16h 00mMultiple Airlines
Deal found 15/9£493
Wed 1/1018:10STN - SEA
2 stops25h 45mMultiple Airlines
Wed 15/1018:50SEA - STN
2 stops19h 05mMultiple Airlines
Deal found 14/9£513
Mon 27/1006:10STN - PDX
2 stops18h 50mMultiple Airlines
Mon 3/1114:45PDX - STN
2 stops15h 45mMultiple Airlines
Deal found 16/9£596
Mon 29/908:30STN - PDX
3 stops18h 16mMultiple Airlines
Mon 20/1006:15PDX - STN
3 stops24h 05mMultiple Airlines
Deal found 16/9£726
Mon 6/1006:25STN - PDX
3 stops34h 55mMultiple Airlines
Mon 20/1009:55PDX - STN
3 stops20h 25mMultiple Airlines
Deal found 14/9£728

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 17 September 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

Thu 30/10

05:55-18:00

2 stops19h 05m

Seattle/Tacoma Intl

Thu 13/11

14:35-19:45

2 stops21h 10m

£461

LondonSeattle

STN - SEA

STNSEA

London Stansted

Wed 8/10

18:45-22:31

3 stops35h 46m

Seattle/Tacoma Intl

Mon 13/10

07:15-16:05

3 stops24h 50m

£480

LondonSeattle

STN - SEA

STNSEA

London Stansted

Wed 15/10

06:10-17:50

2 stops19h 40m

Seattle/Tacoma Intl

Mon 20/10

15:45-22:10

2 stops22h 25m

£483

LondonSeattle

STN - SEA

STNSEA

London Stansted

Mon 8/12

06:30-17:00

2 stops18h 30m

Seattle/Tacoma Intl

Sun 14/12

14:35-23:00

2 stops24h 25m

£488

LondonSeattle

STN - SEA

STNSEA

London Stansted

Fri 17/10

06:40-14:16

2 stops15h 36m

Seattle/Tacoma Intl

Mon 20/10

14:20-14:20

2 stops16h 00m

£493

LondonSeattle

STN - SEA

STNSEA

London Stansted

Wed 1/10

18:10-11:55

2 stops25h 45m

Seattle/Tacoma Intl

Wed 15/10

18:50-21:55

2 stops19h 05m

£513

LondonSeattle

STN - SEA

STNSEA

London Stansted

Mon 6/10

06:25-17:50

2 stops19h 25m

Seattle/Tacoma Intl

Fri 10/10

15:45-21:20

2 stops21h 35m

£530

LondonSeattle

STN - SEA

STNSEA

London Stansted

Sun 9/11

20:55-12:10

2 stops23h 15m

Seattle/Tacoma Intl

Sat 15/11

14:00-15:25

2 stops17h 25m

£554

LondonSeattle

STN - SEA

STNSEA

London Stansted

Fri 3/10

08:15-19:21

2 stops19h 06m

Seattle/Tacoma Intl

Thu 16/10

13:50-22:25

2 stops24h 35m

£573

LondonSeattle

STN - SEA

STNSEA

London Stansted

Fri 7/11

08:35-17:00

2 stops16h 25m

Seattle/Tacoma Intl

Wed 12/11

14:35-17:15

2 stops18h 40m

£573

Flights are sorted by cheapest return flights first.

Deals found on 15/9

Showing 1-10 of 38 results
1
2
3
4

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.

See more FAQs

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 Stansted to Washington

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to John F Kennedy Intl flights
Heathrow to Newark flights
Heathrow to LaGuardia flights
Gatwick to Newark flights
London City to John F Kennedy Intl flights
Gatwick to John F Kennedy Intl flights
London City to Newark flights
Gatwick to LaGuardia flights
Stansted to John F Kennedy Intl flights
Luton to John F Kennedy Intl flights
Heathrow to Miami flights
Heathrow to Orlando flights
Heathrow to Los Angeles flights
Stansted to Newark flights
Luton to Newark flights
London City to LaGuardia flights
Heathrow to Boston flights
Heathrow to Dallas/Fort Worth flights
Heathrow to San Francisco flights
Heathrow to O'Hare Intl flights
Heathrow to Dulles Intl flights
Heathrow to Las Vegas flights
Gatwick to Orlando flights
Heathrow to Baltimore flights
Heathrow to Tampa flights
London City to Miami flights
Heathrow to Atlanta flights
Gatwick to Miami flights
London City to Orlando flights
Gatwick to Atlanta flights
Heathrow to Hobby flights
Heathrow to Seattle flights
London City to Los Angeles flights
London City to Boston flights
Heathrow to George Bush Intcntl flights
Gatwick to San Francisco flights
Gatwick to Boston flights
Gatwick to Los Angeles flights
Heathrow to Midway flights
Gatwick to O'Hare Intl flights
Stansted to Miami flights
London City to O'Hare Intl flights
Gatwick to Dulles Intl flights
Heathrow to Nashville flights
Gatwick to Las Vegas flights
Heathrow to Philadelphia flights
Gatwick to Dallas/Fort Worth flights
Heathrow to Austin flights
Heathrow to Sky Harbor Intl flights
London City to San Francisco 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 Stansted to Washington?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Stansted to Washington. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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

Cheapflights simply makes it quick and affordable to book flights from Stansted to Washington by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

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

Yes, we can. To see specific flights from Stansted to Washington with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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

Not ready to book yet? You can track prices for flights from Stansted to Washington on Cheapflights with our Price Alert feature and get notified when better prices are available.

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.