Latest deals
When to book
FAQs
Price Alerts

Cheap flights from Washington, D.C. Dulles Intl Airport to London from £248

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington, D.C. Dulles Intl Airport to London departing on 20/5. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags
Voted winner of Europe's Best Travel App 2023

Save money when you book flights with momondo

Big names, great deals

Big names, great deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customise your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

Find the cheapest flights from Washington, D.C. Dulles Intl Airport to London

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
18:30 - 12:10
IAD
-
STN
13h 40m
1 stop
Multiple Airlines Logo
06:30 - 22:00
STN
-
IAD
19h 30m
1 stop
£382Multiple Airlines
Mon, 16 Mar - Wed, 25 Mar
Multiple Airlines Logo
19:40 - 15:45
IAD
-
STN
15h 05m
2 stops
Multiple Airlines Logo
07:35 - 18:30
STN
-
IAD
15h 55m
2 stops
£384Multiple Airlines
Mon, 23 Feb - Mon, 2 Mar
Multiple Airlines Logo
19:40 - 22:10
IAD
-
STN
21h 30m
2 stops
Multiple Airlines Logo
16:10 - 18:30
STN
-
IAD
31h 20m
2 stops
£385Multiple Airlines
Sun, 15 Feb - Tue, 3 Mar
Multiple Airlines Logo
17:30 - 23:50
IAD
-
STN
25h 20m
2 stops
Multiple Airlines Logo
06:30 - 21:23
STN
-
IAD
19h 53m
3 stops
£392Multiple Airlines
Tue, 24 Feb - Tue, 3 Mar
Multiple Airlines Logo
18:30 - 12:10
IAD
-
STN
13h 40m
1 stop
Multiple Airlines Logo
12:10 - 22:00
STN
-
IAD
13h 50m
1 stop
£395Multiple Airlines
Mon, 16 Mar - Wed, 25 Mar
Multiple Airlines Logo
20:30 - 00:40
IAD
-
STN
23h 10m
2 stops
Multiple Airlines Logo
06:45 - 19:20
STN
-
IAD
17h 35m
2 stops
£395Multiple Airlines
Mon, 20 Apr - Mon, 27 Apr
Multiple Airlines Logo
17:30 - 12:10
IAD
-
STN
13h 40m
1 stop
Multiple Airlines Logo
06:30 - 21:00
STN
-
IAD
19h 30m
1 stop
£396Multiple Airlines
Mon, 16 Feb - Wed, 25 Feb
Multiple Airlines Logo
17:30 - 12:10
IAD
-
STN
13h 40m
1 stop
Multiple Airlines Logo
05:55 - 14:35
STN
-
IAD
13h 40m
1 stop
£398Multiple Airlines
Mon, 16 Feb - Tue, 24 Feb
Multiple Airlines Logo
09:45 - 22:40
IAD
-
STN
31h 55m
2 stops
Multiple Airlines Logo
18:00 - 15:50
STN
-
IAD
26h 50m
2 stops
£400Multiple Airlines
Mon, 23 Feb - Mon, 2 Mar
Multiple Airlines Logo
17:30 - 12:55
IAD
-
STN
14h 25m
1 stop
Multiple Airlines Logo
06:30 - 21:00
STN
-
IAD
19h 30m
1 stop
£400Multiple Airlines
Tue, 17 Feb - Wed, 25 Feb

momondo Fare Finder

 
Customise your flight search to find flights from Washington, D.C. Dulles Intl Airport to London Stansted Airport 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, momondo users made 279,928 searches. Data last updated 28 January 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to London Stansted Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Mon 16/3

18:30-12:10

1 stop13h 40m

London Stansted

Wed 25/3

06:30-22:00

1 stop19h 30m

£382

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Mon 23/2

19:40-15:45

2 stops15h 05m

London Stansted

Mon 2/3

07:35-18:30

2 stops15h 55m

£384

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Sun 15/2

19:40-22:10

2 stops21h 30m

London Stansted

Tue 3/3

16:10-18:30

2 stops31h 20m

£385

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Tue 24/2

17:30-23:50

2 stops25h 20m

London Stansted

Tue 3/3

06:30-21:23

3 stops19h 53m

£392

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Mon 16/3

18:30-12:10

1 stop13h 40m

London Stansted

Wed 25/3

12:10-22:00

1 stop13h 50m

£395

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Mon 20/4

20:30-00:40

2 stops23h 10m

London Stansted

Mon 27/4

06:45-19:20

2 stops17h 35m

£395

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Mon 16/2

17:30-12:10

1 stop13h 40m

London Stansted

Wed 25/2

06:30-21:00

1 stop19h 30m

£396

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Mon 16/2

17:30-12:10

1 stop13h 40m

London Stansted

Tue 24/2

05:55-14:35

1 stop13h 40m

£398

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Mon 23/2

09:45-22:40

2 stops31h 55m

London Stansted

Mon 2/3

18:00-15:50

2 stops26h 50m

£400

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Tue 17/2

17:30-12:55

1 stop14h 25m

London Stansted

Wed 25/2

06:30-21:00

1 stop19h 30m

£400

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

When to book flights from Washington, D.C. Dulles Intl Airport to London Stansted Airport

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. Dulles Intl Airport to London Stansted Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated return price

Cheap Washington, D.C. Dulles Intl Airport to London Stansted Airport (IAD to STN) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. Dulles Intl Airport to London Stansted Airport

Fastest flight time

9h 35m

Direct flights

None
The fastest flight from Washington, D.C. Dulles Intl Airport to London Stansted Airport takes 9h 35m
There are no direct flights from Washington, D.C. Dulles Intl Airport to London Stansted Airport. There are no popular flight routes from Washington, D.C. Dulles Intl Airport to London Stansted Airport.
Search flight deals

  • How far is Washington, D.C. Dulles Intl to London Stansted by plane?

    The distance between Washington, D.C. Dulles Intl and London Stansted is about 3683.3 mi. A reasonable flight in good conditions will take 9h 35m.

  • When did momondo last update prices for flights from Washington, D.C. Dulles Intl Airport to London Stansted Airport?

    Prices for flights from Washington, D.C. Dulles Intl Airport to London Stansted Airport are updated daily.

  • How old do you have to be to fly from Washington, D.C. Dulles Intl Airport to London Stansted Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington, D.C. Dulles Intl Airport to London Stansted Airport.

  • What documentation or ID do you need to fly to London Stansted Airport?

    The travel and health documents required for your trip to London Stansted Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at London Stansted Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

  • How do I get Price Alerts for flights from Washington, D.C. Dulles Intl Airport to London Stansted Airport?

    You can take advantage of momondo’s Price Alerts by first searching for your flights to Washington, D.C. Dulles Intl Airport from London Stansted Airport. Flight offers will be shown to you in real-time. From there you can create a Price Alert by using our on-site widget.

  • How can I save money on flights from Washington, D.C. Dulles Intl Airport to London Stansted Airport with momondo?

    Plan your trips smart with the “Price Forecast” feature, which uses flight data to help you pick the best days to fly for the lowest fares. Our “Price Calendar” helps you get the most for your money by showing you when it’s most advantageous to fly. Curate your own travel experiences for less with “Explore”. Expert travel hacks to fuel your next adventure are a click away with “Discover” by momondo. Set up our “Price Alerts” to track fare changes and book when prices are at their lowest point.

  • How does momondo find its flight prices?

    momondo shows deals across 700+ competitors all at once. momondo is active in 30 international markets, so you can have access to a wide range of options from airlines and OTAs alike.

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Eastbourne
Milton Keynes
Luton
Gatwick
Maidstone
Slough
Southend-on-Sea
Canterbury
Ipswich
Ilford
Guildford
Chelmsford
Hayes
Dover
Folkestone
Worthing
Colchester
Bedford
Ramsgate
Chichester

Why use momondo?

Why should I use momondo to find a flight deal from Washington, D.C. to London?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to London from Washington, D.C..

Can I find flights from Washington, D.C. to London with flexible booking policies on momondo?

All flight searches from Washington, D.C. to London on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Washington, D.C. to London?

Once you have performed a search for Washington, D.C. to London flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Washington, D.C. to London right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Washington, D.C. to London now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to London and let you know when they change.

An easier way to manage your London Stansted Airport trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Fri 27/2
Fri 6/3
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to London