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Cheap flights from London Stansted Airport to Washington, D.C. Dulles Intl Airport from £404

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 3/7. Fares are subject to change and may not be available on all flights or dates of travel.
STN — IAD
15 Feb — 22 Feb1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Stansted to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Stansted (STN) to Dulles Intl (IAD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 16 January 2026.

Round-trip from

£434

One-way from

£404

Popular in

July

Cheapest in

February

Average price

£474
12/3-23/3
  • 12/3-23/3
  • 4 total stops
  • 51h 00m total
  • London to Washington, D.C.
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3/7
  • 3/7
  • 2 total stops
  • 29h 55m total
  • London to Washington, D.C.
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£60 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease (£9 potential savings vs. average return price).
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Average for round-trip flights in January 2026
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Find flight deals from Stansted to Dulles Intl

Enter your travel dates to find the best prices.

Cheapest flights from Stansted to Dulles Intl
Explore the most affordable flight options available from Stansted to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 16 January 2026.

Thu 22/106:30
STN
-
IAD
2 stops17h 00m
Multiple Airlines
Wed 28/119:40
IAD
-
STN
2 stops17h 10m
Multiple Airlines
Deal found 14/1£418
Thu 12/314:35
STN
-
IAD
2 stops35h 25m
Multiple Airlines
Mon 23/318:30
IAD
-
STN
2 stops15h 35m
Multiple Airlines
Deal found 14/1£434
Thu 26/208:30
STN
-
IAD
2 stops15h 00m
Multiple Airlines
Sun 1/319:40
IAD
-
STN
2 stops12h 40m
Multiple Airlines
Deal found 14/1£435
Sat 7/218:35
STN
-
IAD
2 stops31h 25m
Multiple Airlines
Tue 24/219:40
IAD
-
STN
2 stops23h 10m
Multiple Airlines
Deal found 14/1£452
Mon 2/208:05
STN
-
IAD
2 stops35h 30m
Multiple Airlines
Fri 6/219:40
IAD
-
STN
2 stops15h 00m
Multiple Airlines
Deal found 14/1£453
Thu 12/212:00
STN
-
IAD
2 stops33h 40m
Multiple Airlines
Thu 19/220:30
IAD
-
STN
2 stops21h 50m
Multiple Airlines
Deal found 15/1£456
Wed 28/105:55
STN
-
IAD
2 stops20h 05m
Multiple Airlines
Sat 31/119:40
IAD
-
STN
2 stops20h 15m
Multiple Airlines
Deal found 14/1£456
Wed 4/220:40
STN
-
IAD
2 stops23h 35m
Multiple Airlines
Mon 9/217:30
IAD
-
STN
2 stops25h 25m
Multiple Airlines
Deal found 14/1£458

Cheapflights Fare Finder

 
Customise your flight search to find flights from Stansted to Dulles Intl 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 16 January 2026.
Use the filters below to find and compare flights from London Stansted Airport to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Stansted

Fly to

Dulles Intl

Route

Depart

Return

Price

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Thu 12/3

14:35-22:00

2 stops35h 25m

Washington, D.C. Dulles Intl

Mon 23/3

18:30-14:05

2 stops15h 35m

£434

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Tue 17/2

21:20-21:00

2 stops28h 40m

Washington, D.C. Dulles Intl

Tue 10/3

20:40-23:50

2 stops23h 10m

£488

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Tue 27/1

14:30-21:00

2 stops35h 30m

Washington, D.C. Dulles Intl

Fri 30/1

19:40-15:40

2 stops15h 00m

£491

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Sun 25/1

08:55-15:15

2 stops35h 20m

Washington, D.C. Dulles Intl

Wed 28/1

18:00-15:55

2 stops16h 55m

£514

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Mon 2/2

08:05-14:35

2 stops35h 30m

Washington, D.C. Dulles Intl

Thu 5/2

17:05-07:50

1 stop9h 45m

£552

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Sat 14/2

20:10-21:00

2 stops29h 50m

Washington, D.C. Dulles Intl

Sat 7/3

20:30-23:10

2 stops21h 40m

£552

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Tue 17/3

20:25-22:00

2 stops29h 35m

Washington, D.C. Dulles Intl

Fri 10/4

20:30-15:25

2 stops13h 55m

£554

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Mon 9/2

06:10-18:30

2 stops17h 20m

Washington, D.C. Dulles Intl

Sat 14/2

17:05-11:35

1 stop13h 30m

£577

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Fri 13/2

16:20-15:15

2 stops27h 55m

Washington, D.C. Dulles Intl

Fri 20/2

17:05-07:50

1 stop9h 45m

£584

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Mon 26/1

15:15-18:30

2 stops32h 15m

Washington, D.C. Dulles Intl

Wed 28/1

17:05-07:50

1 stop9h 45m

£589

Flights are sorted by cheapest return flights first.

Deals found on 15/1

Showing 1-10 of 23 results
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Best time to book a flight from Stansted to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl 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.

Related info for your journey

Find useful and relevant information for your journey from Stansted to Dulles Intl. 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 Dulles Intl that include hotel bookings?

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

  • How can I find direct flights from Stansted to Dulles Intl?

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

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

    Yes. Cheapflights offers flight deals from Stansted to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

Travelling to a place near Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Silver Spring
Hanover
Oxon Hill
Woodbridge
Arlington
Alexandria
College Park

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

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Dulles Intl from Stansted.

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

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

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

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