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Cheap flights from Washington, D.C. to London from $257

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 2/2. 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 - 11:25 pmIAD-STN
21h 55m2 stops
Multiple Airlines Logo
6:50 am - 8:05 pmSTN-IAD
18h 15m2 stops
$563Multiple Airlines
Find Deal
Sun, Nov 23 - Wed, Nov 26
Multiple Airlines Logo
8:30 pm - 11:10 pmIAD-STN
21h 40m2 stops
Multiple Airlines Logo
6:05 pm - 3:50 pmSTN-IAD
26h 45m2 stops
$564Multiple Airlines
Find Deal
Tue, Nov 25 - Tue, Dec 2
Multiple Airlines Logo
11:05 am - 11:10 pmDCA-STN
31h 05m3 stops
Multiple Airlines Logo
7:30 am - 9:56 pmSTN-DCA
19h 26m2 stops
$564Multiple Airlines
Find Deal
Tue, Nov 25 - Tue, Dec 2
Multiple Airlines Logo
7:40 pm - 6:20 pmIAD-STN
17h 40m2 stops
Multiple Airlines Logo
6:30 am - 6:30 pmSTN-IAD
17h 00m2 stops
$565Multiple Airlines
Find Deal
Tue, Dec 9 - Tue, Dec 16
Multiple Airlines Logo
9:45 am - 8:55 pmIAD-STN
30h 10m2 stops
Multiple Airlines Logo
5:20 pm - 3:50 pmSTN-IAD
27h 30m2 stops
$567Multiple Airlines
Find Deal
Wed, Nov 26 - Tue, Dec 2
Multiple Airlines Logo
7:40 pm - 9:20 pmIAD-STN
20h 40m2 stops
Multiple Airlines Logo
6:30 am - 6:30 pmSTN-IAD
17h 00m2 stops
$568Multiple Airlines
Find Deal
Mon, Dec 8 - Fri, Dec 12
Multiple Airlines Logo
9:45 am - 12:15 amIAD-STN
33h 30m3 stops
Multiple Airlines Logo
6:50 am - 8:05 pmSTN-IAD
18h 15m2 stops
$569Multiple Airlines
Find Deal
Thu, Dec 4 - Wed, Dec 10
Multiple Airlines Logo
9:45 am - 8:55 pmIAD-STN
30h 10m2 stops
Multiple Airlines Logo
5:20 pm - 3:50 pmSTN-IAD
27h 30m2 stops
$570Multiple Airlines
Find Deal
Wed, Nov 26 - Tue, Dec 2
Multiple Airlines Logo
4:10 pm - 10:40 pmDCA-STN
25h 30m2 stops
Multiple Airlines Logo
7:30 am - 9:56 pmSTN-DCA
19h 26m2 stops
$571Multiple Airlines
Find Deal
Wed, Nov 26 - Tue, Dec 2
Multiple Airlines Logo
9:00 am - 11:10 pmIAD-STN
33h 10m3 stops
Multiple Airlines Logo
7:30 am - 8:59 pmSTN-IAD
18h 29m2 stops
$572Multiple Airlines
Find Deal
Tue, Nov 25 - Tue, Dec 2

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 November 12, 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 11/23

8:30 pm-11:25 pm

2 stops21h 55m

London Stansted

Wed 11/26

6:50 am-8:05 pm

2 stops18h 15m

$563

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Tue 11/25

8:30 pm-11:10 pm

2 stops21h 40m

London Stansted

Tue 12/2

6:05 pm-3:50 pm

2 stops26h 45m

$564

Washington, D.C.London

DCA - STN

DCASTN

Washington, D.C. Reagan-National

Tue 11/25

11:05 am-11:10 pm

3 stops31h 05m

London Stansted

Tue 12/2

7:30 am-9:56 pm

2 stops19h 26m

$564

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Tue 12/9

7:40 pm-6:20 pm

2 stops17h 40m

London Stansted

Tue 12/16

6:30 am-6:30 pm

2 stops17h 00m

$565

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Wed 11/26

9:45 am-8:55 pm

2 stops30h 10m

London Stansted

Tue 12/2

5:20 pm-3:50 pm

2 stops27h 30m

$567

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Mon 12/8

7:40 pm-9:20 pm

2 stops20h 40m

London Stansted

Fri 12/12

6:30 am-6:30 pm

2 stops17h 00m

$568

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Thu 12/4

9:45 am-12:15 am

3 stops33h 30m

London Stansted

Wed 12/10

6:50 am-8:05 pm

2 stops18h 15m

$569

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Wed 11/26

9:45 am-8:55 pm

2 stops30h 10m

London Stansted

Tue 12/2

5:20 pm-3:50 pm

2 stops27h 30m

$570

Washington, D.C.London

DCA - STN

DCASTN

Washington, D.C. Reagan-National

Wed 11/26

4:10 pm-10:40 pm

2 stops25h 30m

London Stansted

Tue 12/2

7:30 am-9:56 pm

2 stops19h 26m

$571

Washington, D.C.London

IAD - STN

IADSTN

Washington, D.C. Dulles Intl

Tue 11/25

9:00 am-11:10 pm

3 stops33h 10m

London Stansted

Tue 12/2

7:30 am-8:59 pm

2 stops18h 29m

$572

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

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 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
Chelmsford
Wembley
Folkestone
Romford
Ilford
Cobham
Stansted
Harrow
Watford

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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