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Cheap flights from Washington, D.C. to London from $241

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 1/26. 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
0 bags

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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
5:05 pm - 7:50 am
IAD
-
STN
9h 45m
1 stop
Multiple Airlines Logo
6:30 am - 3:35 pm
STN
-
IAD
14h 05m
1 stop
$535Multiple Airlines
Thu, Feb 12 - Thu, Feb 19
Multiple Airlines Logo
5:30 pm - 2:05 pm
IAD
-
STN
15h 35m
2 stops
Multiple Airlines Logo
9:35 am - 2:35 pm
STN
-
IAD
34h 00m
2 stops
$536Multiple Airlines
Mon, Feb 9 - Mon, Feb 16
Multiple Airlines Logo
7:40 pm - 8:05 pm
IAD
-
STN
19h 25m
2 stops
Multiple Airlines Logo
6:55 am - 6:30 pm
STN
-
IAD
16h 35m
2 stops
$542Multiple Airlines
Sat, Jan 24 - Sat, Jan 31
Multiple Airlines Logo
8:20 pm - 4:50 pm
IAD
-
STN
15h 30m
1 stop
Multiple Airlines Logo
6:20 am - 4:50 pm
STN
-
IAD
15h 30m
1 stop
$545Multiple Airlines
Mon, Apr 13 - Fri, Apr 17
Multiple Airlines Logo
5:05 pm - 1:20 pm
IAD
-
STN
15h 15m
1 stop
Multiple Airlines Logo
6:30 am - 3:35 pm
STN
-
IAD
14h 05m
1 stop
$546Multiple Airlines
Wed, Jan 28 - Mon, Feb 2
Multiple Airlines Logo
6:00 am - 10:35 pm
DCA
-
STN
35h 35m
3 stops
Multiple Airlines Logo
6:00 pm - 3:31 pm
STN
-
DCA
26h 31m
3 stops
$546Multiple Airlines
Sun, Feb 1 - Sat, Feb 7
Multiple Airlines Logo
9:00 pm - 1:20 pm
IAD
-
STN
11h 20m
1 stop
Multiple Airlines Logo
6:30 am - 3:35 pm
STN
-
IAD
14h 05m
1 stop
$547Multiple Airlines
Sun, Mar 1 - Sun, Mar 8
Multiple Airlines Logo
10:00 pm - 4:35 pm
IAD
-
STN
14h 35m
1 stop
Multiple Airlines Logo
6:30 am - 4:35 pm
STN
-
IAD
14h 05m
1 stop
$548Multiple Airlines
Thu, Mar 19 - Tue, Mar 24
Multiple Airlines Logo
8:30 pm - 6:05 pm
IAD
-
STN
16h 35m
1 stop
Multiple Airlines Logo
6:00 am - 5:15 pm
STN
-
IAD
16h 15m
1 stop
$549Multiple Airlines
Thu, Feb 26 - Wed, Mar 4
Multiple Airlines Logo
6:05 pm - 3:05 pm
IAD
-
STN
17h 00m
1 stop
Multiple Airlines Logo
11:25 am - 7:10 pm
STN
-
IAD
12h 45m
1 stop
$550Multiple Airlines
Wed, Mar 25 - Sun, Mar 29

momondo Fare Finder

 
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 January 13, 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

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Thu 2/12

5:05 pm-7:50 am

1 stop9h 45m

London Stansted

Thu 2/19

6:30 am-3:35 pm

1 stop14h 05m

$535

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Mon 2/9

5:30 pm-2:05 pm

2 stops15h 35m

London Stansted

Mon 2/16

9:35 am-2:35 pm

2 stops34h 00m

$536

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Sat 1/24

7:40 pm-8:05 pm

2 stops19h 25m

London Stansted

Sat 1/31

6:55 am-6:30 pm

2 stops16h 35m

$542

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Mon 4/13

8:20 pm-4:50 pm

1 stop15h 30m

London Stansted

Fri 4/17

6:20 am-4:50 pm

1 stop15h 30m

$545

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Wed 1/28

5:05 pm-1:20 pm

1 stop15h 15m

London Stansted

Mon 2/2

6:30 am-3:35 pm

1 stop14h 05m

$546

Washington, D.C.London

DCA - STN

DCASTN

Washington, D.C. Reagan-National

Sun 2/1

6:00 am-10:35 pm

3 stops35h 35m

London Stansted

Sat 2/7

6:00 pm-3:31 pm

3 stops26h 31m

$546

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Sun 3/1

9:00 pm-1:20 pm

1 stop11h 20m

London Stansted

Sun 3/8

6:30 am-3:35 pm

1 stop14h 05m

$547

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Thu 3/19

10:00 pm-4:35 pm

1 stop14h 35m

London Stansted

Tue 3/24

6:30 am-4:35 pm

1 stop14h 05m

$548

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Thu 2/26

8:30 pm-6:05 pm

1 stop16h 35m

London Stansted

Wed 3/4

6:00 am-5:15 pm

1 stop16h 15m

$549

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Wed 3/25

6:05 pm-3:05 pm

1 stop17h 00m

London Stansted

Sun 3/29

11:25 am-7:10 pm

1 stop12h 45m

$550

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 05m.

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

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

  • 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.

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

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

Compare and see reviews for airlines that fly from Washington, D.C. to London Stansted Airport with momondo
Airline
Rating
Free Cancellation
Price
PLAYPriceFrom $369Free 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
Milton Keynes
Dover
Slough
Guildford
Crawley
Dartford
Hayes
Wembley
Brentwood
Watford
Cobham
Folkestone
Romford
Harrow
Croydon
Richmond
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

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