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Cheap flights from Washington, D.C. to London from $248

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 2/10. 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
9:45 am - 11:30 am
IAD
-
STN
20h 45m2 stops
Multiple Airlines Logo
8:10 am - 8:54 pm
STN
-
IAD
17h 44m2 stops
$573Multiple Airlines
Sun, Jan 11 - Tue, Jan 20
Multiple Airlines Logo
7:40 pm - 8:05 pm
IAD
-
STN
19h 25m2 stops
Multiple Airlines Logo
6:55 am - 6:30 pm
STN
-
IAD
16h 35m2 stops
$574Multiple Airlines
Sat, Jan 10 - Sat, Jan 17
Multiple Airlines Logo
9:45 am - 2:10 pm
IAD
-
STN
23h 25m2 stops
Multiple Airlines Logo
8:05 pm - 3:50 pm
STN
-
IAD
24h 45m2 stops
$575Multiple Airlines
Wed, Jan 21 - Thu, Feb 5
Multiple Airlines Logo
10:30 pm - 9:25 pm
IAD
-
STN
17h 55m2 stops
Multiple Airlines Logo
8:15 am - 9:00 pm
STN
-
IAD
17h 45m2 stops
$578Multiple Airlines
Wed, Jan 21 - Wed, Jan 28
Multiple Airlines Logo
9:45 am - 2:00 pm
IAD
-
STN
23h 15m2 stops
Multiple Airlines Logo
8:10 am - 8:54 pm
STN
-
IAD
17h 44m2 stops
$579Multiple Airlines
Sun, Jan 11 - Tue, Jan 20
Multiple Airlines Logo
10:30 pm - 9:25 pm
IAD
-
STN
17h 55m2 stops
Multiple Airlines Logo
8:15 am - 9:00 pm
STN
-
IAD
17h 45m2 stops
$580Multiple Airlines
Wed, Jan 21 - Wed, Jan 28
Multiple Airlines Logo
9:45 am - 10:40 pm
IAD
-
STN
31h 55m2 stops
Multiple Airlines Logo
6:05 pm - 3:50 pm
STN
-
IAD
26h 45m2 stops
$584Multiple Airlines
Wed, Jan 21 - Tue, Jan 27
Multiple Airlines Logo
7:40 pm - 3:15 pm
BWI
-
STN
14h 35m2 stops
Multiple Airlines Logo
2:15 pm - 6:40 pm
STN
-
BWI
33h 25m2 stops
$584Multiple Airlines
Fri, Jan 23 - Sun, Jan 25
Multiple Airlines Logo
7:40 pm - 3:15 pm
IAD
-
STN
14h 35m2 stops
Multiple Airlines Logo
2:15 pm - 3:15 pm
STN
-
IAD
30h 00m2 stops
$592Multiple Airlines
Fri, Jan 9 - Wed, Jan 14
Multiple Airlines Logo
4:10 pm - 10:40 pm
DCA
-
STN
25h 30m2 stops
Multiple Airlines Logo
8:30 am - 9:58 pm
STN
-
DCA
18h 28m2 stops
$593Multiple Airlines
Wed, Jan 14 - Sun, Jan 18

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
Mar 18
IAD2:30 pmWashington, D.C. Dulles Intl
27h 45m
1 stop
STN10:15 pmLondon Stansted
Mar 24
STN5:20 pmLondon Stansted
31h 00m
1 stop
IAD8:20 pmWashington, D.C. Dulles Intl
$642
Find similar
Turkish Airlines
Mar 16
IAD10:15 pmWashington, D.C. Dulles Intl
31h 35m
1 stop
STN9:50 amLondon Stansted
Mar 24
STN5:20 pmLondon Stansted
31h 00m
1 stop
IAD8:20 pmWashington, D.C. Dulles Intl
$643
Find similar
Turkish Airlines
Mar 19
IAD10:15 pmWashington, D.C. Dulles Intl
31h 35m
1 stop
STN9:50 amLondon Stansted
Mar 23
STN10:50 amLondon Stansted
37h 30m
1 stop
IAD8:20 pmWashington, D.C. Dulles Intl
$651
Find similar

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
Jan 10
IAD8:45 pmWashington, D.C. Dulles Intl
28h 35m
1 stop
STN6:20 amLondon Stansted
Jan 17
STN7:20 amLondon Stansted
16h 25m
1 stop
IAD6:45 pmWashington, D.C. Dulles Intl
$948
Find similar
Royal Air Maroc
Jan 10
IAD8:45 pmWashington, D.C. Dulles Intl
28h 35m
1 stop
STN6:20 amLondon Stansted
Jan 18
STN7:20 amLondon Stansted
16h 25m
1 stop
IAD6:45 pmWashington, D.C. Dulles Intl
$949
Find similar
Royal Air Maroc
Jan 10
IAD8:45 pmWashington, D.C. Dulles Intl
28h 35m
1 stop
STN6:20 amLondon Stansted
Jan 17
STN7:20 amLondon Stansted
16h 25m
1 stop
IAD6:45 pmWashington, D.C. Dulles Intl
$1,002
Find similar

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 December 28, 2025.
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

Sun 1/11

9:45 am-11:30 am

2 stops20h 45m

London Stansted

Tue 1/20

8:10 am-8:54 pm

2 stops17h 44m

$573

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Sat 1/10

7:40 pm-8:05 pm

2 stops19h 25m

London Stansted

Sat 1/17

6:55 am-6:30 pm

2 stops16h 35m

$574

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Wed 1/21

9:45 am-2:10 pm

2 stops23h 25m

London Stansted

Thu 2/5

8:05 pm-3:50 pm

2 stops24h 45m

$575

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Wed 1/21

10:30 pm-9:25 pm

2 stops17h 55m

London Stansted

Wed 1/28

8:15 am-9:00 pm

2 stops17h 45m

$578

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Sun 1/11

9:45 am-2:00 pm

2 stops23h 15m

London Stansted

Tue 1/20

8:10 am-8:54 pm

2 stops17h 44m

$579

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Wed 1/21

10:30 pm-9:25 pm

2 stops17h 55m

London Stansted

Wed 1/28

8:15 am-9:00 pm

2 stops17h 45m

$580

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Wed 1/21

9:45 am-10:40 pm

2 stops31h 55m

London Stansted

Tue 1/27

6:05 pm-3:50 pm

2 stops26h 45m

$584

BaltimoreLondon

BWI - STN

BWISTN

Baltimore/Washington

Fri 1/23

7:40 pm-3:15 pm

2 stops14h 35m

London Stansted

Sun 1/25

2:15 pm-6:40 pm

2 stops33h 25m

$584

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Fri 1/9

7:40 pm-3:15 pm

2 stops14h 35m

London Stansted

Wed 1/14

2:15 pm-3:15 pm

2 stops30h 00m

$592

Washington, D.C.London

DCA - STN

DCASTN

Washington, D.C. Reagan-National

Wed 1/14

4:10 pm-10:40 pm

2 stops25h 30m

London Stansted

Sun 1/18

8:30 am-9:58 pm

2 stops18h 28m

$593

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 day to depart on your flight to London Stansted Airport?

The cheapest day to depart on your flight to London Stansted Airport is on a Tuesday when prices can be found for as low as $457. This is often the case because there is less demand to fly during this day of the week. On the other hand, Sunday is the most expensive day to depart from Washington, D.C. because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $631.

What is the cheapest time of day to depart on your flight to London Stansted Airport?

Our most recent data shows that the best time of day to fly to London Stansted Airport is in the afternoon. Flights from Washington, D.C. to London Stansted Airport during this time can be as low as $509. In contrast, the most expensive time of day to depart to London Stansted Airport is in the evening when prices are around $513.

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 30m

Direct flights

None
The fastest flight from Washington, D.C. to London Stansted Airport takes 9h 30m
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 30m.

  • 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
Milton Keynes
Dover
Luton
Slough
Guildford
Hayes
Dartford
Crawley
Brentwood
Watford
Wembley
Cobham
Folkestone
Romford
Richmond
Uxbridge
Chelmsford
Stansted

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.

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