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Cheap flights from London Stansted Airport to Washington, D.C. from $426

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 9/30. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

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
7:15 pm - 10:15 pmSTN  London Stansted-IAD Washington, D.C. Dulles Intl
32h 00m2 stops Kastrup Copenhagen Reykjavik Keflavik Intl
Multiple Airlines Logo
11:20 pm - 12:10 amIAD  Washington, D.C. Dulles Intl-STN London Stansted
19h 50m2 stops Reykjavik Keflavik Intl Kastrup Copenhagen
$603Multiple Airlines
Tue, Sep 1 - Tue, Sep 8
Multiple Airlines Logo
7:15 pm - 7:20 pmSTN  London Stansted-IAD Washington, D.C. Dulles Intl
29h 05m2 stops Kastrup Copenhagen Reykjavik Keflavik Intl
Multiple Airlines Logo
8:30 pm - 4:50 pmIAD  Washington, D.C. Dulles Intl-STN London Stansted
15h 20m2 stops Reykjavik Keflavik Intl Kastrup Copenhagen
$611Multiple Airlines
Tue, Sep 1 - Mon, Sep 7
Multiple Airlines Logo
7:15 pm - 7:20 pmSTN  London Stansted-IAD Washington, D.C. Dulles Intl
29h 05m2 stops Kastrup Copenhagen Reykjavik Keflavik Intl
Multiple Airlines Logo
8:30 pm - 4:50 pmIAD  Washington, D.C. Dulles Intl-STN London Stansted
15h 20m2 stops Reykjavik Keflavik Intl Kastrup Copenhagen
$614Multiple Airlines
Tue, Sep 1 - Mon, Sep 7
Multiple Airlines Logo
12:30 pm - 3:10 pmSTN  London Stansted-IAD Washington, D.C. Dulles Intl
31h 40m2 stops Madrid Barajas Lisbon Humberto Delgado
Multiple Airlines Logo
10:50 pm - 7:25 pmIAD  Washington, D.C. Dulles Intl-STN London Stansted
15h 35m2 stops Lisbon Humberto Delgado Madrid Barajas
$617Multiple Airlines
Tue, Oct 6 - Fri, Oct 16
Multiple Airlines Logo
8:15 am - 7:20 pmSTN  London Stansted-IAD Washington, D.C. Dulles Intl
16h 05m2 stops Stockholm Arlanda Reykjavik Keflavik Intl
Multiple Airlines Logo
8:30 pm - 10:25 pmIAD  Washington, D.C. Dulles Intl-STN London Stansted
20h 55m2 stops Reykjavik Keflavik Intl Stockholm Arlanda
$621Multiple Airlines
Thu, Oct 8 - Mon, Oct 12
Multiple Airlines Logo
1:45 pm - 3:10 pmSTN  London Stansted-IAD Washington, D.C. Dulles Intl
30h 25m2 stops Barcelona-El Prat Lisbon Humberto Delgado
Multiple Airlines Logo
5:45 pm - 7:20 pmIAD  Washington, D.C. Dulles Intl-STN London Stansted
20h 35m2 stops Lisbon Humberto Delgado Barcelona-El Prat
$623Multiple Airlines
Wed, Sep 16 - Wed, Sep 23
Multiple Airlines Logo
8:15 am - 6:30 pmSTN  London Stansted-IAD Washington, D.C. Dulles Intl
15h 15m2 stops Kastrup Copenhagen Reykjavik Keflavik Intl
Multiple Airlines Logo
7:40 pm - 11:45 pmIAD  Washington, D.C. Dulles Intl-STN London Stansted
23h 05m2 stops Reykjavik Keflavik Intl Kastrup Copenhagen
$627Multiple Airlines
Wed, Nov 18 - Wed, Dec 2
Multiple Airlines Logo
8:15 am - 6:30 pmSTN  London Stansted-IAD Washington, D.C. Dulles Intl
15h 15m2 stops Kastrup Copenhagen Reykjavik Keflavik Intl
Multiple Airlines Logo
7:40 pm - 11:45 pmIAD  Washington, D.C. Dulles Intl-STN London Stansted
23h 05m2 stops Reykjavik Keflavik Intl Kastrup Copenhagen
$629Multiple Airlines
Wed, Nov 18 - Wed, Dec 2
Multiple Airlines Logo
10:30 pm - 6:30 pmSTN  London Stansted-IAD Washington, D.C. Dulles Intl
25h 00m2 stops Dublin Reykjavik Keflavik Intl
Multiple Airlines Logo
7:40 pm - 2:55 pmIAD  Washington, D.C. Dulles Intl-STN London Stansted
14h 15m2 stops Reykjavik Keflavik Intl Dublin
$632Multiple Airlines
Fri, Nov 20 - Fri, Nov 27
Multiple Airlines Logo
7:00 am - 10:15 pmSTN  London Stansted-IAD Washington, D.C. Dulles Intl
20h 15m2 stops Kastrup Copenhagen Reykjavik Keflavik Intl
Multiple Airlines Logo
11:20 pm - 9:40 pmIAD  Washington, D.C. Dulles Intl-STN London Stansted
17h 20m2 stops Reykjavik Keflavik Intl Kastrup Copenhagen
$640Multiple Airlines
Wed, Oct 7 - Wed, Oct 14

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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 August 7, 2026.
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

Cheapest round-trip

LondonWashington, D.C.

STN London Stansted - IAD Washington, D.C. Dulles Intl

STNIAD

London Stansted

Tue 9/1

7:15 pm-10:15 pm

2 stops32h 00m

Washington, D.C. Dulles Intl

Tue 9/8

11:20 pm-12:10 am

2 stops19h 50m

$603

LondonWashington, D.C.

STN London Stansted - IAD Washington, D.C. Dulles Intl

STNIAD

London Stansted

Tue 9/1

7:15 pm-7:20 pm

2 stops29h 05m

Washington, D.C. Dulles Intl

Mon 9/7

8:30 pm-4:50 pm

2 stops15h 20m

$611

LondonWashington, D.C.

STN London Stansted - IAD Washington, D.C. Dulles Intl

STNIAD

London Stansted

Tue 9/1

7:15 pm-7:20 pm

2 stops29h 05m

Washington, D.C. Dulles Intl

Mon 9/7

8:30 pm-4:50 pm

2 stops15h 20m

$614

LondonWashington, D.C.

STN London Stansted - IAD Washington, D.C. Dulles Intl

STNIAD

London Stansted

Tue 10/6

12:30 pm-3:10 pm

2 stops31h 40m

Washington, D.C. Dulles Intl

Fri 10/16

10:50 pm-7:25 pm

2 stops15h 35m

$617
Quickest round-trip

LondonWashington, D.C.

STN London Stansted - IAD Washington, D.C. Dulles Intl

STNIAD

London Stansted

Thu 10/8

8:15 am-7:20 pm

2 stops16h 05m

Washington, D.C. Dulles Intl

Mon 10/12

8:30 pm-10:25 pm

2 stops20h 55m

$621

LondonWashington, D.C.

STN London Stansted - IAD Washington, D.C. Dulles Intl

STNIAD

London Stansted

Wed 9/16

1:45 pm-3:10 pm

2 stops30h 25m

Washington, D.C. Dulles Intl

Wed 9/23

5:45 pm-7:20 pm

2 stops20h 35m

$623

LondonWashington, D.C.

STN London Stansted - IAD Washington, D.C. Dulles Intl

STNIAD

London Stansted

Wed 11/18

8:15 am-6:30 pm

2 stops15h 15m

Washington, D.C. Dulles Intl

Wed 12/2

7:40 pm-11:45 pm

2 stops23h 05m

$627

LondonWashington, D.C.

STN London Stansted - IAD Washington, D.C. Dulles Intl

STNIAD

London Stansted

Wed 11/18

8:15 am-6:30 pm

2 stops15h 15m

Washington, D.C. Dulles Intl

Wed 12/2

7:40 pm-11:45 pm

2 stops23h 05m

$629

LondonWashington, D.C.

STN London Stansted - IAD Washington, D.C. Dulles Intl

STNIAD

London Stansted

Fri 11/20

10:30 pm-6:30 pm

2 stops25h 00m

Washington, D.C. Dulles Intl

Fri 11/27

7:40 pm-2:55 pm

2 stops14h 15m

$632

LondonWashington, D.C.

STN London Stansted - IAD Washington, D.C. Dulles Intl

STNIAD

London Stansted

Wed 10/7

7:00 am-10:15 pm

2 stops20h 15m

Washington, D.C. Dulles Intl

Wed 10/14

11:20 pm-9:40 pm

2 stops17h 20m

$640

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 Wednesday. momondo users have found tickets for Wednesday departures for as low as $742. 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 $916.

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

In the morning 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 $787. Flying to Washington, D.C. in the morning is an ideal time because this is during off-peak travel hours. Try not to purchase tickets at noon because they tend to be around $807. 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.

Fastest flight time

14h 10m

Direct flights

None
The fastest flight from London Stansted Airport to Washington, D.C. takes 14h 10m
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..
Search flight deals

Frequently asked questions about flying from London Stansted Airport to Washington, D.C.

  • 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 14h 10m 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
Arlington
Gettysburg
Waldorf
Laurel
Woodbridge
Fredericksburg
Gaithersburg
Linthicum Heights
Rockville
Silver Spring
Towson
Colonial Beach
Springfield
Fairfax
Tysons
Edgewood
Bethesda
Glen Burnie

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