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Cheap flights from Washington, D.C. to London from $320

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 8/1. 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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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
9:55 am - 8:30 pm
IAD
-
STN
29h 35m
2 stops
Multiple Airlines Logo
8:20 am - 3:10 pm
STN
-
IAD
35h 50m
2 stops
$793Multiple Airlines
Wed, May 27 - Wed, Jun 3
Multiple Airlines Logo
5:15 pm - 7:50 am
IAD
-
STN
9h 35m
1 stop
Multiple Airlines Logo
8:05 pm - 7:25 pm
STN
-
IAD
28h 20m
2 stops
$800Multiple Airlines
Sun, Aug 9 - Tue, Aug 25
Multiple Airlines Logo
5:15 pm - 1:25 pm
IAD
-
STN
15h 10m
2 stops
Multiple Airlines Logo
8:10 am - 3:10 pm
STN
-
IAD
36h 00m
2 stops
$801Multiple Airlines
Tue, Jun 9 - Mon, Jun 15
Multiple Airlines Logo
8:30 pm - 8:30 pm
IAD
-
STN
19h 00m
2 stops
Multiple Airlines Logo
3:10 pm - 7:00 pm
STN
-
IAD
32h 50m
2 stops
$803Multiple Airlines
Fri, Oct 9 - Tue, Oct 20
Multiple Airlines Logo
6:00 am - 9:20 pm
DCA
-
STN
34h 20m
3 stops
Multiple Airlines Logo
10:45 pm - 10:28 pm
STN
-
DCA
28h 43m
2 stops
$804Multiple Airlines
Thu, Jun 4 - Mon, Jun 8
Multiple Airlines Logo
12:45 pm - 9:35 pm
DCA
-
STN
27h 50m
3 stops
Multiple Airlines Logo
8:30 am - 7:58 pm
STN
-
DCA
16h 28m
2 stops
$805Multiple Airlines
Sun, Jun 7 - Wed, Jun 10
Turkish Airlines Logo
1:20 pm - 9:55 am
IAD
-
STN
15h 35m
1 stop
Turkish Airlines Logo
5:35 pm - 11:35 am
STN
-
IAD
23h 00m
1 stop
$806Turkish Airlines
Tue, Jul 28 - Thu, Oct 8
Multiple Airlines Logo
6:59 am - 12:50 pm
DCA
-
STN
24h 51m
3 stops
Multiple Airlines Logo
6:35 am - 6:13 pm
STN
-
DCA
16h 38m
3 stops
$806Multiple Airlines
Wed, Jun 3 - Sat, Jun 13
Turkish Airlines Logo
1:20 pm - 9:55 am
IAD
-
STN
15h 35m
1 stop
Turkish Airlines Logo
6:55 am - 7:50 pm
STN
-
IAD
17h 55m
1 stop
$807Turkish Airlines
Thu, Sep 17 - Tue, Sep 22
Turkish Airlines Logo
1:20 pm - 9:55 am
IAD
-
STN
15h 35m
1 stop
Turkish Airlines Logo
6:55 am - 7:50 pm
STN
-
IAD
17h 55m
1 stop
$808Turkish Airlines
Thu, Jul 30 - Wed, Sep 9

Turkish Airlines flights from Washington, D.C. to London Stansted Airport

Our best Turkish Airlines deals on Washington, D.C. to London Stansted Airport flight tickets
Turkish Airlines
Jul 28
IAD1:20 pmWashington, D.C. Dulles Intl
15h 35m
1 stop
STN9:55 amLondon Stansted
Oct 8
STN5:35 pmLondon Stansted
23h 00m
1 stop
IAD11:35 amWashington, D.C. Dulles Intl
$806
Turkish Airlines
Sep 17
IAD1:20 pmWashington, D.C. Dulles Intl
15h 35m
1 stop
STN9:55 amLondon Stansted
Sep 22
STN6:55 amLondon Stansted
17h 55m
1 stop
IAD7:50 pmWashington, D.C. Dulles Intl
$807
Turkish Airlines
Jul 30
IAD1:20 pmWashington, D.C. Dulles Intl
15h 35m
1 stop
STN9:55 amLondon Stansted
Sep 9
STN6:55 amLondon Stansted
17h 55m
1 stop
IAD7:50 pmWashington, D.C. Dulles Intl
$808

Royal Air Maroc flights from Washington, D.C. to London Stansted Airport

Our best Royal Air Maroc deals on Washington, D.C. to London Stansted Airport flight tickets
Royal Air Maroc
Oct 2
IAD9:00 pmWashington, D.C. Dulles Intl
28h 20m
1 stop
STN6:20 amLondon Stansted
Oct 16
STN7:25 amLondon Stansted
16h 35m
1 stop
IAD7:00 pmWashington, D.C. Dulles Intl
$821
Royal Air Maroc
Sep 30
IAD9:00 pmWashington, D.C. Dulles Intl
28h 20m
1 stop
STN6:20 amLondon Stansted
Oct 5
STN7:25 amLondon Stansted
16h 35m
1 stop
IAD7:00 pmWashington, D.C. Dulles Intl
$824
Royal Air Maroc
Sep 30
IAD9:00 pmWashington, D.C. Dulles Intl
28h 20m
1 stop
STN6:20 amLondon Stansted
Oct 9
STN7:25 amLondon Stansted
16h 35m
1 stop
IAD7:00 pmWashington, D.C. Dulles Intl
$850

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 May 11, 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

Wed 5/27

9:55 am-8:30 pm

2 stops29h 35m

London Stansted

Wed 6/3

8:20 am-3:10 pm

2 stops35h 50m

$793

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Sun 8/9

5:15 pm-7:50 am

1 stop9h 35m

London Stansted

Tue 8/25

8:05 pm-7:25 pm

2 stops28h 20m

$800

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Tue 6/9

5:15 pm-1:25 pm

2 stops15h 10m

London Stansted

Mon 6/15

8:10 am-3:10 pm

2 stops36h 00m

$801

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Fri 10/9

8:30 pm-8:30 pm

2 stops19h 00m

London Stansted

Tue 10/20

3:10 pm-7:00 pm

2 stops32h 50m

$803

Washington, D.C.London

DCA - STN

DCASTN

Washington, D.C. Reagan-National

Thu 6/4

6:00 am-9:20 pm

3 stops34h 20m

London Stansted

Mon 6/8

10:45 pm-10:28 pm

2 stops28h 43m

$804

Washington, D.C.London

DCA - STN

DCASTN

Washington, D.C. Reagan-National

Sun 6/7

12:45 pm-9:35 pm

3 stops27h 50m

London Stansted

Wed 6/10

8:30 am-7:58 pm

2 stops16h 28m

$805

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Tue 7/28

1:20 pm-9:55 am

1 stop15h 35m

London Stansted

Thu 10/8

5:35 pm-11:35 am

1 stop23h 00m

$806

Washington, D.C.London

DCA - STN

DCASTN

Washington, D.C. Reagan-National

Wed 6/3

6:59 am-12:50 pm

3 stops24h 51m

London Stansted

Sat 6/13

6:35 am-6:13 pm

3 stops16h 38m

$806
Quickest round-trip

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Thu 9/17

1:20 pm-9:55 am

1 stop15h 35m

London Stansted

Tue 9/22

6:55 am-7:50 pm

1 stop17h 55m

$807

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Thu 7/30

1:20 pm-9:55 am

1 stop15h 35m

London Stansted

Wed 9/9

6:55 am-7:50 pm

1 stop17h 55m

$808

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest 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

What is the cheapest airline that flies from Washington, D.C. to London Stansted?

Turkish Airlines is the most popular carrier operating from Washington, D.C. to London Stansted

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.
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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
Dover
Luton
Hayes
Crawley
Wembley
Slough
Croydon
Stansted
Watford
Harrow
Brentwood
Dartford
Cobham
Folkestone
Romford
Uxbridge
Guildford

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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