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Cheap flights from Washington, D.C. to London from $270

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 3/3. 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
8:30 pm - 6:05 pm
IAD
-
STN
16h 35m1 stop
Multiple Airlines Logo
7:35 am - 5:15 pm
STN
-
IAD
14h 40m1 stop
$578Multiple Airlines
Thu, Jan 29 - Mon, Feb 2
Multiple Airlines Logo
8:30 pm - 10:15 pm
IAD
-
STN
20h 45m1 stop
Multiple Airlines Logo
11:00 am - 6:50 pm
STN
-
IAD
12h 50m1 stop
$579Multiple Airlines
Wed, Feb 25 - Sat, Feb 28
Multiple Airlines Logo
4:30 pm - 10:35 pm
IAD
-
STN
25h 05m3 stops
Multiple Airlines Logo
8:05 am - 8:54 pm
STN
-
IAD
17h 49m2 stops
$581Multiple Airlines
Fri, Jan 16 - Wed, Jan 21
Multiple Airlines Logo
6:00 am - 7:40 pm
DCA
-
STN
32h 40m3 stops
Multiple Airlines Logo
8:10 am - 10:23 am
STN
-
DCA
31h 13m2 stops
$581Multiple Airlines
Wed, Jan 14 - Tue, Jan 20
Multiple Airlines Logo
8:30 pm - 1:05 pm
IAD
-
STN
11h 35m1 stop
Multiple Airlines Logo
6:00 am - 6:15 pm
STN
-
IAD
16h 15m1 stop
$582Multiple Airlines
Sat, Mar 7 - Wed, Mar 11
Multiple Airlines Logo
6:50 pm - 11:10 pm
DCA
-
STN
23h 20m3 stops
Multiple Airlines Logo
7:30 am - 9:58 pm
STN
-
DCA
19h 28m2 stops
$582Multiple Airlines
Tue, Feb 24 - Tue, Mar 3
Multiple Airlines Logo
7:40 pm - 2:15 pm
IAD
-
STN
13h 35m2 stops
Multiple Airlines Logo
8:05 am - 6:30 pm
STN
-
IAD
15h 25m2 stops
$583Multiple Airlines
Thu, Jan 8 - Thu, Jan 22
Multiple Airlines Logo
7:40 pm - 2:15 pm
BWI
-
STN
13h 35m2 stops
Multiple Airlines Logo
8:05 am - 6:40 pm
STN
-
BWI
15h 35m2 stops
$583Multiple Airlines
Thu, Jan 8 - Thu, Jan 22
Multiple Airlines Logo
8:30 pm - 6:05 pm
IAD
-
STN
16h 35m1 stop
Multiple Airlines Logo
6:00 am - 5:15 pm
STN
-
IAD
16h 15m1 stop
$584Multiple Airlines
Thu, Feb 19 - Wed, Feb 25
Multiple Airlines Logo
7:40 pm - 11:05 pm
IAD
-
STN
22h 25m2 stops
Multiple Airlines Logo
6:10 am - 6:30 pm
STN
-
IAD
17h 20m2 stops
$585Multiple Airlines
Fri, Feb 20 - Fri, Feb 27

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
Dec 10
IAD8:45 pmWashington, D.C. Dulles Intl
28h 35m
1 stop
STN6:20 amLondon Stansted
Dec 15
STN7:20 amLondon Stansted
16h 25m
1 stop
IAD6:45 pmWashington, D.C. Dulles Intl
$949
Find similar
Royal Air Maroc
Dec 10
IAD8:45 pmWashington, D.C. Dulles Intl
28h 35m
1 stop
STN6:20 amLondon Stansted
Dec 14
STN7:20 amLondon Stansted
16h 25m
1 stop
IAD6:45 pmWashington, D.C. Dulles Intl
$971
Find similar
Royal Air Maroc
Dec 10
IAD8:45 pmWashington, D.C. Dulles Intl
28h 35m
1 stop
STN6:20 amLondon Stansted
Dec 13
STN7:20 amLondon Stansted
16h 25m
1 stop
IAD6:45 pmWashington, D.C. Dulles Intl
$974
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 4, 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

Thu 1/29

8:30 pm-6:05 pm

1 stop16h 35m

London Stansted

Mon 2/2

7:35 am-5:15 pm

1 stop14h 40m

$578

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Wed 2/25

8:30 pm-10:15 pm

1 stop20h 45m

London Stansted

Sat 2/28

11:00 am-6:50 pm

1 stop12h 50m

$579

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Fri 1/16

4:30 pm-10:35 pm

3 stops25h 05m

London Stansted

Wed 1/21

8:05 am-8:54 pm

2 stops17h 49m

$581

Washington, D.C.London

DCA - STN

DCASTN

Washington, D.C. Reagan-National

Wed 1/14

6:00 am-7:40 pm

3 stops32h 40m

London Stansted

Tue 1/20

8:10 am-10:23 am

2 stops31h 13m

$581

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Sat 3/7

8:30 pm-1:05 pm

1 stop11h 35m

London Stansted

Wed 3/11

6:00 am-6:15 pm

1 stop16h 15m

$582

Washington, D.C.London

DCA - STN

DCASTN

Washington, D.C. Reagan-National

Tue 2/24

6:50 pm-11:10 pm

3 stops23h 20m

London Stansted

Tue 3/3

7:30 am-9:58 pm

2 stops19h 28m

$582

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Thu 1/8

7:40 pm-2:15 pm

2 stops13h 35m

London Stansted

Thu 1/22

8:05 am-6:30 pm

2 stops15h 25m

$583

BaltimoreLondon

BWI - STN

BWISTN

Baltimore/Washington

Thu 1/8

7:40 pm-2:15 pm

2 stops13h 35m

London Stansted

Thu 1/22

8:05 am-6:40 pm

2 stops15h 35m

$583

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Thu 2/19

8:30 pm-6:05 pm

1 stop16h 35m

London Stansted

Wed 2/25

6:00 am-5:15 pm

1 stop16h 15m

$584

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Fri 2/20

7:40 pm-11:05 pm

2 stops22h 25m

London Stansted

Fri 2/27

6:10 am-6:30 pm

2 stops17h 20m

$585

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

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 45m.

  • 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
Wembley
Romford
Watford
Ilford
Cobham
Folkestone
Uxbridge
Stansted
Chelmsford

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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