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Cheap flights from London Stansted Airport to Washington, D.C. from $339

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from London Stansted Airport to Washington, D.C. departing on 2/8. 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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0 bags

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Find the cheapest flights from London Stansted Airport to Washington, D.C.

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
6:30 am - 3:35 pmSTN-IAD
14h 05m1 stop
Multiple Airlines Logo
9:00 pm - 9:20 pmIAD-STN
19h 20m1 stop
$573Multiple Airlines
Find Deal
Fri, Dec 5 - Fri, Dec 12
Multiple Airlines Logo
4:10 pm - 6:30 pmSTN-IAD
31h 20m2 stops
Multiple Airlines Logo
7:40 pm - 11:40 pmIAD-STN
23h 00m2 stops
$575Multiple Airlines
Find Deal
Tue, Jan 20 - Thu, Jan 29
Multiple Airlines Logo
2:35 pm - 9:00 pmSTN-IAD
35h 25m2 stops
Multiple Airlines Logo
5:30 pm - 12:05 amIAD-STN
25h 35m2 stops
$578Multiple Airlines
Find Deal
Thu, Dec 4 - Thu, Dec 11
Multiple Airlines Logo
8:55 am - 2:40 pmSTN-IAD
34h 45m2 stops
Multiple Airlines Logo
8:30 pm - 8:05 pmIAD-STN
18h 35m2 stops
$579Multiple Airlines
Find Deal
Tue, Dec 2 - Sun, Dec 7
Multiple Airlines Logo
12:35 pm - 3:15 pmSTN-IAD
31h 40m2 stops
Multiple Airlines Logo
5:30 pm - 11:50 pmIAD-STN
25h 20m2 stops
$580Multiple Airlines
Find Deal
Sun, Dec 7 - Tue, Dec 9
Multiple Airlines Logo
2:35 pm - 9:00 pmSTN-IAD
35h 25m2 stops
Multiple Airlines Logo
5:30 pm - 1:50 pmIAD-STN
15h 20m2 stops
$584Multiple Airlines
Find Deal
Thu, Dec 4 - Tue, Dec 9
Multiple Airlines Logo
6:30 am - 3:35 pmSTN-IAD
14h 05m1 stop
Multiple Airlines Logo
5:05 pm - 9:50 amIAD-STN
11h 45m1 stop
$589Multiple Airlines
Find Deal
Fri, Nov 28 - Tue, Dec 2
Multiple Airlines Logo
6:30 am - 3:35 pmSTN-IAD
14h 05m1 stop
Multiple Airlines Logo
5:05 pm - 7:50 amIAD-STN
9h 45m1 stop
$592Multiple Airlines
Find Deal
Fri, Nov 28 - Sun, Nov 30
Multiple Airlines Logo
6:30 am - 7:30 pmSTN-IAD
18h 00m1 stop
Multiple Airlines Logo
5:05 pm - 9:50 amIAD-STN
11h 45m1 stop
$594Multiple Airlines
Find Deal
Wed, Dec 10 - Wed, Dec 17
Multiple Airlines Logo
6:30 am - 7:30 pmSTN-IAD
18h 00m1 stop
Multiple Airlines Logo
9:00 pm - 6:20 pmIAD-STN
16h 20m1 stop
$596Multiple Airlines
Find Deal
Wed, Dec 10 - Tue, Dec 16

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

Our best Royal Air Maroc deals on London Stansted Airport to Washington, D.C. flight tickets
Royal Air Maroc
Dec 13
STN7:20 amLondon Stansted
16h 25m
1 stop
IAD6:45 pmWashington, D.C. Dulles Intl
Jan 11
IAD8:45 pmWashington, D.C. Dulles Intl
28h 35m
1 stop
STN6:20 amLondon Stansted
$710
Find similar
Royal Air Maroc
Dec 13
STN7:20 amLondon Stansted
16h 25m
1 stop
IAD6:45 pmWashington, D.C. Dulles Intl
Jan 10
IAD8:45 pmWashington, D.C. Dulles Intl
28h 35m
1 stop
STN6:20 amLondon Stansted
$713
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from London Stansted Airport to Washington, D.C. 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 13, 2025.
Use the filters below to find and compare flights from London Stansted Airport to Washington, D.C. that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Fri 12/5

6:30 am-3:35 pm

1 stop14h 05m

Washington, D.C. Dulles Intl

Fri 12/12

9:00 pm-9:20 pm

1 stop19h 20m

$573

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Tue 1/20

4:10 pm-6:30 pm

2 stops31h 20m

Washington, D.C. Dulles Intl

Thu 1/29

7:40 pm-11:40 pm

2 stops23h 00m

$575

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Thu 12/4

2:35 pm-9:00 pm

2 stops35h 25m

Washington, D.C. Dulles Intl

Thu 12/11

5:30 pm-12:05 am

2 stops25h 35m

$578

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Tue 12/2

8:55 am-2:40 pm

2 stops34h 45m

Washington, D.C. Dulles Intl

Sun 12/7

8:30 pm-8:05 pm

2 stops18h 35m

$579

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Sun 12/7

12:35 pm-3:15 pm

2 stops31h 40m

Washington, D.C. Dulles Intl

Tue 12/9

5:30 pm-11:50 pm

2 stops25h 20m

$580

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Thu 12/4

2:35 pm-9:00 pm

2 stops35h 25m

Washington, D.C. Dulles Intl

Tue 12/9

5:30 pm-1:50 pm

2 stops15h 20m

$584

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Fri 11/28

6:30 am-3:35 pm

1 stop14h 05m

Washington, D.C. Dulles Intl

Tue 12/2

5:05 pm-9:50 am

1 stop11h 45m

$589

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Fri 11/28

6:30 am-3:35 pm

1 stop14h 05m

Washington, D.C. Dulles Intl

Sun 11/30

5:05 pm-7:50 am

1 stop9h 45m

$592

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Wed 12/10

6:30 am-7:30 pm

1 stop18h 00m

Washington, D.C. Dulles Intl

Wed 12/17

5:05 pm-9:50 am

1 stop11h 45m

$594

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Wed 12/10

6:30 am-7:30 pm

1 stop18h 00m

Washington, D.C. Dulles Intl

Tue 12/16

9:00 pm-6:20 pm

1 stop16h 20m

$596

Flights are sorted by cheapest round-trip flights first.

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See travel insights to Washington, D.C. from

How to get the cheapest flight ticket from London Stansted Airport to Washington, D.C.

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 Washington, D.C.?

On average, the least expensive day to fly to Washington, D.C. from London Stansted Airport is on a Thursday. momondo users have found tickets for Thursday departures for as low as $777. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from London Stansted Airport to Washington, D.C. for around $936.

What is the cheapest time of day to depart on your flight to Washington, D.C.?

In the evening is the cheapest time of day to fly from London Stansted Airport to Washington, D.C. when you can find flight prices for as low as $762. Flying to Washington, D.C. in the evening is an ideal time because this is during off-peak travel hours. Try not to purchase tickets in the morning because they tend to be around $867. Of course, these prices can vary depending on the time of year and what airport you fly to.

When to book flights from London Stansted Airport to Washington, D.C.

Are you open to changing your travel dates? Check out the ideal times to fly from London Stansted Airport to Washington, D.C. according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap London Stansted Airport to Washington, D.C. (STN to WAS) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London Stansted Airport to Washington, D.C.

Direct flights

None
There are no direct flights from London Stansted Airport to Washington, D.C.. There are no popular flight routes from London Stansted Airport to Washington, D.C..
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  • How far is London Stansted to Washington, D.C. by plane?

    Washington, D.C. is 3668.5 mi away from London Stansted. Typically, this will take 12h 05m by plane in normal conditions.

  • When did momondo last update prices for flights from London Stansted Airport to Washington, D.C.?

    Prices for flights from London Stansted Airport to Washington, D.C. were last updated today.

  • How old do you have to be to fly from London Stansted Airport to Washington, D.C.?

    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 London Stansted Airport to Washington, D.C..

  • What documentation or ID do you need to fly to Washington, D.C.?

    The necessary travel and health documents for your Washington, D.C. trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Traveling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
National Harbor
Gettysburg
Arlington
Woodbridge
Waldorf
Tysons
Laurel
Colonial Beach
Silver Spring
Fredericksburg
Towson
Rockville
Reston
Manassas
Gaithersburg
Fairfax
Glen Burnie
Linthicum Heights
Springfield

Why use momondo?

Why should I use momondo to find a flight deal from London to Washington, D.C.?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Washington, D.C. from London.

Can I find flights from London to Washington, D.C. with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for London to Washington, D.C. flights to just show those with flexible booking policies.

How can momondo help me find flights from London to Washington, D.C.?

momondo provides multiple filters to help you find the best flight to Washington, D.C. from London. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from London to Washington, D.C. right now. Can momondo alert me if prices change?

Price alerts on flights to Washington, D.C. from London are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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Find better results for your trip to the United States

Fly into one of these airports located in Washington, D.C.

Airports listed have a maximum distance of 22.4 mi from Washington, D.C.
Washington, D.C. Reagan-National Airport
Washington, D.C. Dulles Intl Airport