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Cheap flights from Washington, D.C. to London from $271

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. to London departing on 10/30. 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. to London

Cheap round-trip flights

Enter your travel dates to find the best prices.
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
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
Multiple Airlines Logo
11:20 pm - 12:10 am
IAD
-
STN
19h 50m
2 stops
Multiple Airlines Logo
12:45 pm - 10:15 pm
STN
-
IAD
14h 30m
2 stops
$684Multiple Airlines
Tue, Aug 18 - Tue, Aug 25
Multiple Airlines Logo
8:30 pm - 8:35 pm
IAD
-
STN
19h 05m
2 stops
Multiple Airlines Logo
10:00 pm - 8:24 pm
STN
-
IAD
27h 24m
3 stops
$685Multiple Airlines
Tue, Aug 18 - Tue, Aug 25

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Customize your flight search to find flights from Washington, D.C. 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. 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

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

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

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Tue 8/18

11:20 pm-12:10 am

2 stops19h 50m

London Stansted

Tue 8/25

12:45 pm-10:15 pm

2 stops14h 30m

$684

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Tue 8/18

8:30 pm-8:35 pm

2 stops19h 05m

London Stansted

Tue 8/25

10:00 pm-8:24 pm

3 stops27h 24m

$685

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. 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

How long does it take to fly to London Stansted Airport?

The flight from Washington, D.C. to London Stansted Airport depends on which airports you’re departing and arriving from and whether or not you have a layover. If you fly from Baltimore (a popular airport in Washington, D.C.) to London Heathrow Airport (the most popular airport in London Stansted Airport), then the flight time is 7h 05m on average. If you fly from Washington, D.C. (another popular airport in Washington, D.C.) to London Heathrow Airport, then the average flight time is 8h 12m.

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

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. 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. to London Stansted Airport (WAS to STN) flight deals and tips

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

Fastest flight time

9h 35m

Direct flights

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

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

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

    A flight from Washington, D.C. to London Stansted will travel around 3668.5 mi. In terms of flight time, this usually takes a little over 9h 35m.

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

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington, D.C. 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?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Washington, D.C. to London. momondo saves you time and could save you money on your trip.

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

Yes. All flights to London from Washington, D.C. on momondo can be compared and filtered by various policies on offer, including flexible booking.

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?

Of course. momondo tracks the price of Washington, D.C. to London flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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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