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Cheap flights from Washington, D.C. Dulles Intl Airport to London from $275

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 8/18. 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
1 adult, Economy, 0 bags

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

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
3:45 pm - 12:50 pm
IAD
-
STN
16h 05m
2 stops
Multiple Airlines Logo
10:50 pm - 3:01 pm
STN
-
IAD
21h 11m
2 stops
$674Multiple Airlines
Fri, Aug 14 - Fri, Aug 21
Multiple Airlines Logo
8:30 pm - 6:50 pm
IAD
-
STN
17h 20m
2 stops
Multiple Airlines Logo
9:10 am - 3:10 pm
STN
-
IAD
35h 00m
2 stops
$675Multiple Airlines
Mon, Jul 27 - Tue, Sep 1
Multiple Airlines Logo
8:30 pm - 11:05 pm
IAD
-
STN
21h 35m
3 stops
Multiple Airlines Logo
6:30 am - 9:24 pm
STN
-
IAD
43h 54m
3 stops
$676Multiple Airlines
Sat, Aug 29 - Mon, Sep 7
Multiple Airlines Logo
11:20 pm - 8:35 pm
IAD
-
STN
16h 15m
2 stops
Multiple Airlines Logo
6:30 am - 9:24 pm
STN
-
IAD
43h 54m
3 stops
$677Multiple Airlines
Tue, Aug 18 - Mon, Aug 24
Multiple Airlines Logo
8:30 pm - 12:20 am
IAD
-
STN
22h 50m
2 stops
Multiple Airlines Logo
6:30 am - 8:24 pm
STN
-
IAD
18h 54m
2 stops
$678Multiple Airlines
Mon, Aug 17 - Tue, Aug 25
Multiple Airlines Logo
3:45 pm - 12:50 pm
IAD
-
STN
16h 05m
2 stops
Multiple Airlines Logo
10:45 pm - 3:01 pm
STN
-
IAD
21h 16m
2 stops
$679Multiple Airlines
Mon, Aug 10 - Wed, Aug 19
Multiple Airlines Logo
8:30 pm - 7:55 pm
IAD
-
STN
18h 25m
2 stops
Multiple Airlines Logo
6:30 am - 11:21 am
STN
-
IAD
33h 51m
3 stops
$680Multiple Airlines
Sun, Aug 23 - Thu, Aug 27
Multiple Airlines Logo
8:20 pm - 5:15 pm
IAD
-
STN
15h 55m
2 stops
Multiple Airlines Logo
8:55 pm - 5:00 pm
STN
-
IAD
25h 05m
2 stops
$681Multiple Airlines
Sun, Oct 4 - Sat, Oct 10
Multiple Airlines Logo
8:30 pm - 11:25 pm
IAD
-
STN
21h 55m
2 stops
Multiple Airlines Logo
10:45 pm - 9:26 pm
STN
-
IAD
27h 41m
3 stops
$682Multiple Airlines
Sun, Jul 19 - Wed, Jul 22
Multiple Airlines Logo
8:55 pm - 7:25 pm
IAD
-
STN
17h 30m
1 stop
Multiple Airlines Logo
6:30 am - 3:45 pm
STN
-
IAD
14h 15m
1 stop
$683Multiple Airlines
Mon, Aug 10 - Wed, Aug 19

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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 July 1, 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

Cheapest round-trip

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Fri 8/14

3:45 pm-12:50 pm

2 stops16h 05m

London Stansted

Fri 8/21

10:50 pm-3:01 pm

2 stops21h 11m

$674

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Mon 7/27

8:30 pm-6:50 pm

2 stops17h 20m

London Stansted

Tue 9/1

9:10 am-3:10 pm

2 stops35h 00m

$675

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Sat 8/29

8:30 pm-11:05 pm

3 stops21h 35m

London Stansted

Mon 9/7

6:30 am-9:24 pm

3 stops43h 54m

$676

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Tue 8/18

11:20 pm-8:35 pm

2 stops16h 15m

London Stansted

Mon 8/24

6:30 am-9:24 pm

3 stops43h 54m

$677

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Mon 8/17

8:30 pm-12:20 am

2 stops22h 50m

London Stansted

Tue 8/25

6:30 am-8:24 pm

2 stops18h 54m

$678

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Mon 8/10

3:45 pm-12:50 pm

2 stops16h 05m

London Stansted

Wed 8/19

10:45 pm-3:01 pm

2 stops21h 16m

$679

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Sun 8/23

8:30 pm-7:55 pm

2 stops18h 25m

London Stansted

Thu 8/27

6:30 am-11:21 am

3 stops33h 51m

$680

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Sun 10/4

8:20 pm-5:15 pm

2 stops15h 55m

London Stansted

Sat 10/10

8:55 pm-5:00 pm

2 stops25h 05m

$681

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Sun 7/19

8:30 pm-11:25 pm

2 stops21h 55m

London Stansted

Wed 7/22

10:45 pm-9:26 pm

3 stops27h 41m

$682
Quickest round-trip

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Mon 8/10

8:55 pm-7:25 pm

1 stop17h 30m

London Stansted

Wed 8/19

6:30 am-3:45 pm

1 stop14h 15m

$683

Flights are sorted by cheapest round-trip flights 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 airline that flies from Washington, D.C. Dulles Intl to London Stansted?

Lufthansa and Turkish Airlines are the most popular carriers operating from Washington, D.C. Dulles Intl to London Stansted

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

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.
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Frequently asked questions about flying from Washington, D.C. Dulles Intl Airport to London Stansted Airport

  • 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 35m 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 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.

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Hounslow
Gatwick
Milton Keynes
Luton
Hayes
Dover
Crawley
Croydon
Wembley
Stansted
Harrow
Slough
Watford
Ilford
Cobham
Brentwood
Folkestone
Guildford
Romford
Uxbridge

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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