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Cheap flights from Washington, D.C. to London from $198

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 10/4. 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

Logo
10:05 pm - 12:45 amIAD-STN
21h 40m3 stops
Logo
3:30 pm - 7:59 pmSTN-IAD
33h 29m2 stops
$496
Find Deal
Thu, Oct 9 - Mon, Oct 13
Logo
8:40 pm - 11:20 pmIAD-STN
22h 40m2 stops
Logo
6:30 am - 6:30 pmSTN-IAD
17h 00m2 stops
$501
Find Deal
Thu, Oct 30 - Tue, Nov 4
Logo
5:20 pm - 10:35 amIAD-STN
12h 15m1 stop
Logo
10:45 am - 7:30 pmSTN-IAD
13h 45m1 stop
$502
Find Deal
Sun, Sep 7 - Tue, Sep 16
Logo
9:00 pm - 2:20 pmIAD-STN
12h 20m1 stop
Logo
12:25 pm - 6:55 pmSTN-IAD
11h 30m1 stop
$503
Find Deal
Tue, Sep 16 - Fri, Sep 19
Logo
5:20 pm - 9:30 amIAD-STN
11h 10m1 stop
Logo
10:45 am - 7:30 pmSTN-IAD
13h 45m1 stop
$504
Find Deal
Sun, Sep 7 - Tue, Sep 16
Logo
5:20 pm - 2:20 pmIAD-STN
16h 00m1 stop
Logo
12:15 pm - 7:30 pmSTN-IAD
12h 15m1 stop
$505
Find Deal
Tue, Sep 16 - Tue, Sep 23
Logo
5:20 pm - 10:35 amIAD-STN
12h 15m1 stop
Logo
10:45 am - 7:30 pmSTN-IAD
13h 45m1 stop
$508
Find Deal
Sun, Sep 7 - Tue, Sep 16
Logo
5:20 pm - 9:30 amIAD-STN
11h 10m1 stop
Logo
12:15 pm - 7:30 pmSTN-IAD
12h 15m1 stop
$510
Find Deal
Sun, Sep 7 - Tue, Sep 16
PLAY Logo
6:50 pm - 10:40 amBWI-STN
10h 50m1 stop
PLAY Logo
11:40 am - 5:40 pmSTN-BWI
11h 00m1 stop
$522PLAY
Find Deal
Mon, Sep 1 - Fri, Sep 5
PLAY Logo
6:50 pm - 10:40 amBWI-STN
10h 50m1 stop
PLAY Logo
11:40 am - 5:40 pmSTN-BWI
11h 00m1 stop
$524PLAY
Find Deal
Wed, Sep 10 - Sun, Sep 14

PLAY flights from Washington, D.C. to London Stansted Airport

Our best PLAY deals on Washington, D.C. to London Stansted Airport flight tickets
PLAY
Sep 1
BWI6:50 pmBaltimore/Washington
10h 50m
1 stop
STN10:40 amLondon Stansted
Sep 5
STN11:40 amLondon Stansted
11h 00m
1 stop
BWI5:40 pmBaltimore/Washington
$522
Find similar
PLAY
Sep 2
BWI6:50 pmBaltimore/Washington
10h 50m
1 stop
STN10:40 amLondon Stansted
Sep 18
STN11:40 amLondon Stansted
11h 00m
1 stop
BWI5:40 pmBaltimore/Washington
$523
Find similar
PLAY
Sep 10
BWI6:50 pmBaltimore/Washington
10h 50m
1 stop
STN10:40 amLondon Stansted
Sep 14
STN11:40 amLondon Stansted
11h 00m
1 stop
BWI5:40 pmBaltimore/Washington
$524
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 August 20, 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 10/9

10:05 pm-12:45 am

3 stops21h 40m

London Stansted

Mon 10/13

3:30 pm-7:59 pm

2 stops33h 29m

$496

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Thu 10/30

8:40 pm-11:20 pm

2 stops22h 40m

London Stansted

Tue 11/4

6:30 am-6:30 pm

2 stops17h 00m

$501

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Sun 9/7

5:20 pm-10:35 am

1 stop12h 15m

London Stansted

Tue 9/16

10:45 am-7:30 pm

1 stop13h 45m

$502

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Tue 9/16

9:00 pm-2:20 pm

1 stop12h 20m

London Stansted

Fri 9/19

12:25 pm-6:55 pm

1 stop11h 30m

$503

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Sun 9/7

5:20 pm-9:30 am

1 stop11h 10m

London Stansted

Tue 9/16

10:45 am-7:30 pm

1 stop13h 45m

$504

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Tue 9/16

5:20 pm-2:20 pm

1 stop16h 00m

London Stansted

Tue 9/23

12:15 pm-7:30 pm

1 stop12h 15m

$505

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Sun 9/7

5:20 pm-10:35 am

1 stop12h 15m

London Stansted

Tue 9/16

10:45 am-7:30 pm

1 stop13h 45m

$508

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Sun 9/7

5:20 pm-9:30 am

1 stop11h 10m

London Stansted

Tue 9/16

12:15 pm-7:30 pm

1 stop12h 15m

$510

BaltimoreLondon

BWI - STN

BWISTN

Baltimore/Washington

Mon 9/1

6:50 pm-10:40 am

1 stop10h 50m

London Stansted

Fri 9/5

11:40 am-5:40 pm

1 stop11h 00m

$522

BaltimoreLondon

BWI - STN

BWISTN

Baltimore/Washington

Wed 9/10

6:50 pm-10:40 am

1 stop10h 50m

London Stansted

Sun 9/14

11:40 am-5:40 pm

1 stop11h 00m

$524

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 typical price of a round-trip flight between Washington, D.C. and London Stansted Airport?

What is the cheapest month to fly to London Stansted Airport?

The cheapest month to fly to London Stansted Airport from Washington, D.C. is in March. Flight prices, which tend to average around $421, are often lower during this time because this is during the off-season. If you are unable to visit London Stansted Airport during the month of March, then departing from Washington, D.C. during the month November is also very affordable. Most momondo users find prices during this month for around $435.

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

Direct flights

None
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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  • 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 10h 20m.

  • 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 $313Free 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
Hounslow
Gatwick
Luton
Dover
Slough
Milton Keynes
Guildford
Dartford
Crawley
Hayes
Chelmsford
Stansted
Brentwood
Ilford
Folkestone
Colchester
Watford
Richmond
Canterbury
Croydon

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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