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Cheap flights from Washington, D.C. Dulles Intl Airport to London from $332

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 4/12. 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
8:30 pm - 3:25 pm
IAD
-
STN
13h 55m
2 stops
Multiple Airlines Logo
8:50 am - 7:20 pm
STN
-
IAD
15h 30m
2 stops
$545Multiple Airlines
Fri, Apr 24 - Thu, Apr 30
Multiple Airlines Logo
8:30 pm - 12:30 am
IAD
-
STN
23h 00m
2 stops
Multiple Airlines Logo
7:05 am - 7:20 pm
STN
-
IAD
17h 15m
2 stops
$546Multiple Airlines
Thu, Apr 16 - Sun, Apr 19
Multiple Airlines Logo
8:30 pm - 6:50 pm
IAD
-
STN
17h 20m
2 stops
Multiple Airlines Logo
7:10 am - 7:20 pm
STN
-
IAD
17h 10m
2 stops
$550Multiple Airlines
Mon, Apr 20 - Tue, Apr 28
Multiple Airlines Logo
8:30 pm - 12:05 am
IAD
-
STN
22h 35m
2 stops
Multiple Airlines Logo
9:40 pm - 7:20 pm
STN
-
IAD
26h 40m
2 stops
$553Multiple Airlines
Sat, Apr 25 - Sat, May 2
Multiple Airlines Logo
8:30 pm - 5:10 pm
IAD
-
STN
15h 40m
2 stops
Multiple Airlines Logo
7:00 am - 7:20 pm
STN
-
IAD
17h 20m
2 stops
$554Multiple Airlines
Wed, Apr 8 - Wed, Apr 22
Multiple Airlines Logo
8:30 pm - 10:40 pm
IAD
-
STN
21h 10m
2 stops
Multiple Airlines Logo
6:25 pm - 5:15 pm
STN
-
IAD
27h 50m
2 stops
$555Multiple Airlines
Mon, Mar 2 - Wed, Mar 4
Multiple Airlines Logo
8:20 pm - 7:35 pm
IAD
-
STN
18h 15m
2 stops
Multiple Airlines Logo
11:35 am - 4:50 pm
STN
-
IAD
34h 15m
2 stops
$557Multiple Airlines
Mon, Apr 13 - Fri, Apr 17
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
$559Multiple Airlines
Thu, Apr 16 - Mon, Apr 20
Multiple Airlines Logo
8:30 pm - 9:40 pm
IAD
-
STN
20h 10m
2 stops
Multiple Airlines Logo
7:05 am - 7:20 pm
STN
-
IAD
17h 15m
2 stops
$560Multiple Airlines
Wed, Apr 15 - Sun, Apr 19
Multiple Airlines Logo
8:30 pm - 9:40 pm
IAD
-
STN
20h 10m
2 stops
Multiple Airlines Logo
7:00 am - 7:20 pm
STN
-
IAD
17h 20m
2 stops
$561Multiple Airlines
Wed, Apr 8 - Wed, Apr 15

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 14, 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

Fri 4/24

8:30 pm-3:25 pm

2 stops13h 55m

London Stansted

Thu 4/30

8:50 am-7:20 pm

2 stops15h 30m

$545

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Thu 4/16

8:30 pm-12:30 am

2 stops23h 00m

London Stansted

Sun 4/19

7:05 am-7:20 pm

2 stops17h 15m

$546

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Mon 4/20

8:30 pm-6:50 pm

2 stops17h 20m

London Stansted

Tue 4/28

7:10 am-7:20 pm

2 stops17h 10m

$550

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Sat 4/25

8:30 pm-12:05 am

2 stops22h 35m

London Stansted

Sat 5/2

9:40 pm-7:20 pm

2 stops26h 40m

$553

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Wed 4/8

8:30 pm-5:10 pm

2 stops15h 40m

London Stansted

Wed 4/22

7:00 am-7:20 pm

2 stops17h 20m

$554

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Mon 3/2

8:30 pm-10:40 pm

2 stops21h 10m

London Stansted

Wed 3/4

6:25 pm-5:15 pm

2 stops27h 50m

$555

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Mon 4/13

8:20 pm-7:35 pm

2 stops18h 15m

London Stansted

Fri 4/17

11:35 am-4:50 pm

2 stops34h 15m

$557

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Thu 4/16

8:30 pm-12:30 am

2 stops23h 00m

London Stansted

Mon 4/20

8:15 am-7:20 pm

2 stops16h 05m

$559

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Wed 4/15

8:30 pm-9:40 pm

2 stops20h 10m

London Stansted

Sun 4/19

7:05 am-7:20 pm

2 stops17h 15m

$560

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Wed 4/8

8:30 pm-9:40 pm

2 stops20h 10m

London Stansted

Wed 4/15

7:00 am-7:20 pm

2 stops17h 20m

$561

Flights are sorted by cheapest round-trip 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 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 55m

Direct flights

None
The fastest flight from Washington, D.C. Dulles Intl Airport to London Stansted Airport takes 9h 55m
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 55m 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
Croydon
Brentwood
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

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