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Cheap flights from Washington, D.C. Dulles Intl Airport to London from $269

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 11/23. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from Washington, D.C. Dulles Intl Airport to London (IAD-STN)

Cheap round-trip flights

Logo
8:30 pm - 7:25 pmIAD-STN
17h 55m2 stops
Logo
6:05 am - 10:10 pmSTN-IAD
21h 05m2 stops
$500
Find Deal
Sun, Oct 5 - Fri, Oct 10
Logo
6:05 pm - 7:50 amIAD-STN
9h 45m1 stop
Logo
6:30 am - 7:30 pmSTN-IAD
18h 00m1 stop
$502
Find Deal
Wed, Oct 29 - Wed, Nov 5
Logo
7:40 pm - 6:30 pmIAD-STN
17h 50m2 stops
Logo
9:20 pm - 6:30 pmSTN-IAD
26h 10m2 stops
$505
Find Deal
Fri, Nov 14 - Mon, Nov 24
Logo
8:30 pm - 7:20 pmIAD-STN
17h 50m2 stops
Logo
11:15 am - 10:10 pmSTN-IAD
15h 55m2 stops
$507
Find Deal
Sat, Oct 4 - Sat, Oct 11
Logo
8:30 pm - 9:45 pmIAD-STN
20h 15m2 stops
Logo
6:05 am - 10:10 pmSTN-IAD
21h 05m2 stops
$513
Find Deal
Sun, Oct 12 - Fri, Oct 17
Logo
10:00 pm - 7:35 pmIAD-STN
17h 35m1 stop
Logo
6:30 am - 7:30 pmSTN-IAD
18h 00m1 stop
$514
Find Deal
Wed, Oct 29 - Wed, Nov 5
Logo
6:05 pm - 7:50 amIAD-STN
9h 45m1 stop
Logo
6:30 am - 7:30 pmSTN-IAD
18h 00m1 stop
$516
Find Deal
Tue, Oct 28 - Tue, Nov 4
Logo
9:35 am - 11:50 amIAD-STN
21h 15m2 stops
Logo
9:30 pm - 9:05 pmSTN-IAD
28h 35m2 stops
$518
Find Deal
Mon, Oct 13 - Mon, Oct 20
Logo
7:40 pm - 8:55 pmIAD-STN
20h 15m2 stops
Logo
9:20 pm - 6:30 pmSTN-IAD
26h 10m2 stops
$522
Find Deal
Wed, Nov 12 - Mon, Nov 17
Logo
9:35 am - 11:50 amIAD-STN
21h 15m3 stops
Logo
9:30 pm - 9:05 pmSTN-IAD
28h 35m2 stops
$524
Find Deal
Mon, Oct 13 - Mon, Oct 20

momondo Fare Finder

 
Customize 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 832,500 searches. Data last updated September 4, 2025.
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

Sun 10/5

8:30 pm-7:25 pm

2 stops17h 55m

London Stansted

Fri 10/10

6:05 am-10:10 pm

2 stops21h 05m

$500

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Wed 10/29

6:05 pm-7:50 am

1 stop9h 45m

London Stansted

Wed 11/5

6:30 am-7:30 pm

1 stop18h 00m

$502

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Fri 11/14

7:40 pm-6:30 pm

2 stops17h 50m

London Stansted

Mon 11/24

9:20 pm-6:30 pm

2 stops26h 10m

$505

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Sat 10/4

8:30 pm-7:20 pm

2 stops17h 50m

London Stansted

Sat 10/11

11:15 am-10:10 pm

2 stops15h 55m

$507

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Sun 10/12

8:30 pm-9:45 pm

2 stops20h 15m

London Stansted

Fri 10/17

6:05 am-10:10 pm

2 stops21h 05m

$513

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Wed 10/29

10:00 pm-7:35 pm

1 stop17h 35m

London Stansted

Wed 11/5

6:30 am-7:30 pm

1 stop18h 00m

$514

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Tue 10/28

6:05 pm-7:50 am

1 stop9h 45m

London Stansted

Tue 11/4

6:30 am-7:30 pm

1 stop18h 00m

$516

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Mon 10/13

9:35 am-11:50 am

2 stops21h 15m

London Stansted

Mon 10/20

9:30 pm-9:05 pm

2 stops28h 35m

$518

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Wed 11/12

7:40 pm-8:55 pm

2 stops20h 15m

London Stansted

Mon 11/17

9:20 pm-6:30 pm

2 stops26h 10m

$522

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Mon 10/13

9:35 am-11:50 am

3 stops21h 15m

London Stansted

Mon 10/20

9:30 pm-9:05 pm

2 stops28h 35m

$524

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to London from

How to get the cheapest flight ticket from Washington, D.C. Dulles Intl Airport to London Stansted Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest day to depart on your flight to London Stansted Airport?

The cheapest day to depart on your flight to London Stansted Airport is on a Tuesday when prices can be found for as low as $457. This is often the case because there is less demand to fly during this day of the week. On the other hand, Sunday is the most expensive day to depart from Washington, D.C. Dulles Intl Airport because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $631.

What is the cheapest time of day to depart on your flight to London Stansted Airport?

Our most recent data shows that the best time of day to fly to London Stansted Airport is in the afternoon. Flights from Washington, D.C. Dulles Intl Airport to London Stansted Airport during this time can be as low as $509. In contrast, the most expensive time of day to depart to London Stansted Airport is in the evening when prices are around $513.

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 round-trip 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

Direct flights

None
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.
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  • 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. Typically, this will take 9h 45m by plane in normal conditions.

  • 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 many operators does momondo search for flights from Washington, D.C. Dulles Intl Airport to London Stansted Airport?

  • 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 required travel and health documents for your London Stansted Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at London Stansted Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular airline from Washington, D.C. Dulles Intl Airport to London Stansted Airport?

Best airlines flying from Washington, D.C. Dulles Intl Airport to London Stansted Airport

Compare and see reviews for airlines that fly from Washington, D.C. Dulles Intl Airport to London Stansted Airport with momondo
Airline
Rating
Free Cancellation
Price
PLAYPriceFrom $313Free CancellationRating
7.0
103 reviews
Search PLAY flights

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Gatwick
Hounslow
Luton
Dover
Slough
Milton Keynes
Hayes
Guildford
Dartford
Stansted
Crawley
Chelmsford
Brentwood
Ilford
Folkestone
Colchester
Watford
Richmond
Wembley
Canterbury

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 all potential Washington, D.C. to London flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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 simply researching potential flights to London, momondo offers a useful price alert feature which will track prices for flights to London from Washington, D.C. and alert you when they change.

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