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Cheap flights from Washington, D.C. Dulles Intl Airport to London from $329

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 3/3. 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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0 bags

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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
8:40 pm - 3:45 pm
IAD
-
STN
15h 05m
2 stops
Multiple Airlines Logo
4:10 pm - 7:30 pm
STN
-
IAD
31h 20m
2 stops
$560Multiple Airlines
Mon, Mar 9 - Tue, Mar 24
Multiple Airlines Logo
8:30 pm - 12:30 am
IAD
-
STN
23h 00m
2 stops
Multiple Airlines Logo
7:10 am - 7:20 pm
STN
-
IAD
17h 10m
2 stops
$562Multiple Airlines
Thu, Apr 23 - Tue, Apr 28
Multiple Airlines Logo
8:30 pm - 8:30 pm
IAD
-
STN
19h 00m
2 stops
Multiple Airlines Logo
10:00 pm - 8:29 pm
STN
-
IAD
27h 29m
2 stops
$564Multiple Airlines
Wed, Apr 8 - Wed, Apr 29
Multiple Airlines Logo
8:30 pm - 12:30 am
IAD
-
STN
23h 00m
2 stops
Multiple Airlines Logo
8:15 am - 7:20 pm
STN
-
IAD
16h 05m
2 stops
$565Multiple Airlines
Thu, Apr 23 - Mon, Apr 27
Multiple Airlines Logo
8:30 pm - 12:10 am
IAD
-
STN
22h 40m
2 stops
Multiple Airlines Logo
8:10 am - 3:10 pm
STN
-
IAD
36h 00m
2 stops
$567Multiple Airlines
Tue, Apr 28 - Mon, May 4
Multiple Airlines Logo
8:40 pm - 11:20 pm
IAD
-
STN
22h 40m
3 stops
Multiple Airlines Logo
6:30 am - 9:18 pm
STN
-
IAD
19h 48m
3 stops
$568Multiple Airlines
Sun, Mar 22 - Tue, Apr 14
Multiple Airlines Logo
9:45 am - 10:40 pm
IAD
-
STN
31h 55m
2 stops
Multiple Airlines Logo
7:30 am - 8:54 pm
STN
-
IAD
17h 24m
2 stops
$569Multiple Airlines
Wed, Mar 4 - Tue, Mar 10
Multiple Airlines Logo
8:30 pm - 11:20 pm
IAD
-
STN
21h 50m
2 stops
Multiple Airlines Logo
6:30 am - 9:18 pm
STN
-
IAD
19h 48m
3 stops
$571Multiple Airlines
Sun, Apr 26 - Thu, Apr 30
Multiple Airlines Logo
7:00 pm - 9:25 pm
IAD
-
STN
22h 25m
2 stops
Multiple Airlines Logo
8:15 am - 9:05 pm
STN
-
IAD
16h 50m
2 stops
$574Multiple Airlines
Mon, Mar 9 - Fri, Mar 13
Multiple Airlines Logo
8:30 pm - 7:55 pm
IAD
-
STN
18h 25m
2 stops
Multiple Airlines Logo
6:35 am - 8:29 pm
STN
-
IAD
18h 54m
2 stops
$575Multiple Airlines
Sun, Apr 12 - Sat, Apr 18

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 February 21, 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 3/9

8:40 pm-3:45 pm

2 stops15h 05m

London Stansted

Tue 3/24

4:10 pm-7:30 pm

2 stops31h 20m

$560

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Thu 4/23

8:30 pm-12:30 am

2 stops23h 00m

London Stansted

Tue 4/28

7:10 am-7:20 pm

2 stops17h 10m

$562

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Wed 4/8

8:30 pm-8:30 pm

2 stops19h 00m

London Stansted

Wed 4/29

10:00 pm-8:29 pm

2 stops27h 29m

$564

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Thu 4/23

8:30 pm-12:30 am

2 stops23h 00m

London Stansted

Mon 4/27

8:15 am-7:20 pm

2 stops16h 05m

$565

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Tue 4/28

8:30 pm-12:10 am

2 stops22h 40m

London Stansted

Mon 5/4

8:10 am-3:10 pm

2 stops36h 00m

$567

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Sun 3/22

8:40 pm-11:20 pm

3 stops22h 40m

London Stansted

Tue 4/14

6:30 am-9:18 pm

3 stops19h 48m

$568

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Wed 3/4

9:45 am-10:40 pm

2 stops31h 55m

London Stansted

Tue 3/10

7:30 am-8:54 pm

2 stops17h 24m

$569

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Sun 4/26

8:30 pm-11:20 pm

2 stops21h 50m

London Stansted

Thu 4/30

6:30 am-9:18 pm

3 stops19h 48m

$571

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Mon 3/9

7:00 pm-9:25 pm

2 stops22h 25m

London Stansted

Fri 3/13

8:15 am-9:05 pm

2 stops16h 50m

$574

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Sun 4/12

8:30 pm-7:55 pm

2 stops18h 25m

London Stansted

Sat 4/18

6:35 am-8:29 pm

2 stops18h 54m

$575

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
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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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  • 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.

  • 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?

    We aggregate our prices from over 700+ competitors from airlines to OTAs. We operate in over 30 markets worldwide to show you a wide range of travel options.

Traveling to a place near London?

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

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.

An easier way to manage your London Stansted Airport trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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