Cheap flights from Washington to London Stansted Airport from £189

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

Cheap flight deals from Washington to Stansted

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

Round-trip from

£416

One-way from

£189

Popular in

June

Cheapest in

October

Average price

£510
5/11-12/11
  • 5/11-12/11
  • 2 total stops
  • 35h 20m total
  • Washington to London
3/10
  • 3/10
  • 3 total stops
  • 25h 20m total
  • Washington to London
Highest demand for flights based on searches. 15% potential increase in price (£75 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease (£13 potential savings vs. average return price).
Average for round-trip flights in August 2025

Find flight deals from Washington to Stansted

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

Wed 5/1120:05SEA - STN
1 stop15h 30mMultiple Airlines
Wed 12/1106:30STN - SEA
1 stop19h 50mMultiple Airlines
Deal found 27/8£416
Mon 6/1015:45SEA - STN
2 stops16h 40mMultiple Airlines
Tue 21/1006:30STN - SEA
2 stops19h 20mMultiple Airlines
Deal found 28/8£421
Tue 30/915:45SEA - STN
2 stops23h 10mMultiple Airlines
Tue 7/1008:15STN - SEA
2 stops20h 25mMultiple Airlines
Deal found 28/8£423
Wed 29/1015:35SEA - STN
2 stops23h 40mMultiple Airlines
Wed 5/1106:00STN - SEA
2 stops19h 00mMultiple Airlines
Deal found 28/8£426
Wed 1/1015:45SEA - STN
2 stops22h 45mMultiple Airlines
Tue 7/1010:45STN - SEA
2 stops15h 05mMultiple Airlines
Deal found 26/8£432
Sun 5/1016:20SEA - STN
2 stops18h 00mMultiple Airlines
Sat 11/1019:40STN - SEA
2 stops26h 20mMultiple Airlines
Deal found 28/8£434
Mon 22/915:45SEA - STN
2 stops21h 15mMultiple Airlines
Fri 10/1006:40STN - SEA
2 stops19h 10mMultiple Airlines
Deal found 27/8£437
Thu 30/1015:35SEA - STN
2 stops25h 05mMultiple Airlines
Fri 7/1108:20STN - SEA
2 stops16h 40mMultiple Airlines
Deal found 27/8£438
Tue 16/915:45SEA - STN
2 stops14h 35mMultiple Airlines
Tue 23/911:15STN - SEA
2 stops17h 25mMultiple Airlines
Deal found 28/8£444
Mon 29/906:15PDX - STN
3 stops24h 05mMultiple Airlines
Mon 6/1022:00STN - PDX
3 stops33h 01mMultiple Airlines
Deal found 27/8£466
Mon 10/1114:45PDX - STN
2 stops22h 35mMultiple Airlines
Mon 17/1106:30STN - PDX
2 stops18h 30mMultiple Airlines
Deal found 28/8£466
Mon 13/1015:20PDX - STN
2 stops16h 55mMultiple Airlines
Mon 27/1007:35STN - PDX
2 stops17h 25mMultiple Airlines
Deal found 27/8£494

Cheapflights Fare Finder

 
Customise your flight search to find flights from Washington to Stansted 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 Washington to London Stansted Airport that are best for you.

Fly from

Washington

Fly to

Stansted

Route

Depart

Return

Price

SeattleLondon

SEA - STN

SEASTN

Seattle/Tacoma Intl

Wed 5/11

20:05-19:35

1 stop15h 30m

London Stansted

Wed 12/11

06:30-18:20

1 stop19h 50m

£416

SeattleLondon

SEA - STN

SEASTN

Seattle/Tacoma Intl

Mon 6/10

15:45-16:25

2 stops16h 40m

London Stansted

Tue 21/10

06:30-17:50

2 stops19h 20m

£421

SeattleLondon

SEA - STN

SEASTN

Seattle/Tacoma Intl

Tue 30/9

15:45-22:55

2 stops23h 10m

London Stansted

Tue 7/10

08:15-20:40

2 stops20h 25m

£423

SeattleLondon

SEA - STN

SEASTN

Seattle/Tacoma Intl

Wed 29/10

15:35-22:15

2 stops23h 40m

London Stansted

Wed 5/11

06:00-17:00

2 stops19h 00m

£426

SeattleLondon

SEA - STN

SEASTN

Seattle/Tacoma Intl

Sun 23/11

20:05-23:00

1 stop18h 55m

London Stansted

Wed 3/12

06:30-18:20

1 stop19h 50m

£428

SeattleLondon

SEA - STN

SEASTN

Seattle/Tacoma Intl

Wed 26/11

20:05-17:50

1 stop13h 45m

London Stansted

Wed 3/12

06:30-18:20

1 stop19h 50m

£428

SeattleLondon

SEA - STN

SEASTN

Seattle/Tacoma Intl

Wed 12/11

20:05-22:50

1 stop18h 45m

London Stansted

Wed 19/11

06:30-18:20

1 stop19h 50m

£430

SeattleLondon

SEA - STN

SEASTN

Seattle/Tacoma Intl

Wed 1/10

15:45-22:30

2 stops22h 45m

London Stansted

Tue 7/10

10:45-17:50

2 stops15h 05m

£432

SeattleLondon

SEA - STN

SEASTN

Seattle/Tacoma Intl

Sun 5/10

16:20-18:20

2 stops18h 00m

London Stansted

Sat 11/10

19:40-14:00

2 stops26h 20m

£434

PortlandLondon

PDX - STN

PDXSTN

Portland

Mon 29/9

06:15-14:20

3 stops24h 05m

London Stansted

Mon 6/10

22:00-23:01

3 stops33h 01m

£466

Flights are sorted by cheapest return flights first.

Deals found on 28/8

Showing 1-10 of 38 results
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Best time to book a flight from Washington to Stansted

Have a flexible travel schedule? Discover the best time to fly to Stansted from Washington 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 Washington to London Stansted Airport
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 Washington to Stansted. 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 Washington to Stansted that include hotel bookings?

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from State of Washington to London Stansted Airport (average of £55). Flying from State of Washington to London Stansted Airport in August is currently the most expensive (average of £113). 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

Travelling to a place near London Stansted Airport?

Book flights to London Stansted Airport if you plan to visit one of these locations
Milton Keynes
Croydon
Hounslow
Gatwick
Slough
Luton
Deal
Wembley
Ilford
Crawley
Hayes
Watford
Folkestone
Ipswich
Chichester
Winchester
Eastbourne
Dartford
Guildford
Romford

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Alternative routes for Washington to Stansted

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Users can book flights with no change fees policies with our dedicated filters. Book flights from Washington to Stansted flexibly with Cheapflights today.

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

Yes, Cheapflights offers price alerts on Washington to Stansted flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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