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Cheap flights from London Stansted Airport to Washington, D.C. from $322

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 3/9. 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 - 6:30 pm
STN
-
IAD
17h 00m
2 stops
Multiple Airlines Logo
7:40 pm - 6:20 pm
IAD
-
STN
17h 40m
2 stops
$572Multiple Airlines
Thu, Feb 5 - Mon, Feb 9
Multiple Airlines Logo
8:30 am - 6:40 pm
STN
-
BWI
15h 10m
2 stops
Multiple Airlines Logo
7:40 pm - 1:20 pm
BWI
-
STN
12h 40m
2 stops
$575Multiple Airlines
Sun, Feb 1 - Fri, Feb 6
Multiple Airlines Logo
6:30 am - 6:30 pm
STN
-
IAD
17h 00m
2 stops
Multiple Airlines Logo
7:40 pm - 4:35 pm
IAD
-
STN
15h 55m
2 stops
$577Multiple Airlines
Mon, Feb 2 - Thu, Feb 5
Multiple Airlines Logo
8:30 am - 6:40 pm
STN
-
BWI
15h 10m
2 stops
Multiple Airlines Logo
7:40 pm - 6:20 pm
BWI
-
STN
17h 40m
2 stops
$578Multiple Airlines
Thu, Feb 5 - Mon, Feb 9
Multiple Airlines Logo
6:30 am - 6:30 pm
STN
-
IAD
17h 00m
2 stops
Multiple Airlines Logo
7:40 pm - 11:00 pm
IAD
-
STN
22h 20m
2 stops
$579Multiple Airlines
Thu, Feb 26 - Sun, Mar 1
Multiple Airlines Logo
6:30 am - 6:40 pm
STN
-
BWI
17h 10m
2 stops
Multiple Airlines Logo
7:40 pm - 4:35 pm
BWI
-
STN
15h 55m
2 stops
$583Multiple Airlines
Mon, Feb 2 - Thu, Feb 5
Multiple Airlines Logo
8:55 am - 3:15 pm
STN
-
IAD
35h 20m
2 stops
Multiple Airlines Logo
5:30 pm - 11:50 pm
IAD
-
STN
25h 20m
2 stops
$593Multiple Airlines
Sun, Mar 1 - Tue, Mar 3
Multiple Airlines Logo
9:35 am - 2:35 pm
STN
-
IAD
34h 00m
2 stops
Multiple Airlines Logo
7:40 pm - 10:15 pm
IAD
-
STN
21h 35m
2 stops
$603Multiple Airlines
Mon, Feb 23 - Wed, Feb 25
Multiple Airlines Logo
11:55 am - 3:35 pm
STN
-
IAD
31h 40m
2 stops
Multiple Airlines Logo
6:30 pm - 11:55 pm
IAD
-
STN
25h 25m
2 stops
$607Multiple Airlines
Mon, Mar 9 - Mon, Mar 16
Multiple Airlines Logo
7:35 am - 6:30 pm
STN
-
IAD
15h 55m
2 stops
Multiple Airlines Logo
7:40 pm - 11:40 pm
IAD
-
STN
23h 00m
2 stops
$609Multiple Airlines
Mon, Feb 2 - Thu, Feb 5

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 January 21, 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

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Thu 2/5

6:30 am-6:30 pm

2 stops17h 00m

Washington, D.C. Dulles Intl

Mon 2/9

7:40 pm-6:20 pm

2 stops17h 40m

$572

LondonBaltimore

STN - BWI

STNBWI

London Stansted

Sun 2/1

8:30 am-6:40 pm

2 stops15h 10m

Baltimore/Washington

Fri 2/6

7:40 pm-1:20 pm

2 stops12h 40m

$575

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Mon 2/2

6:30 am-6:30 pm

2 stops17h 00m

Washington, D.C. Dulles Intl

Thu 2/5

7:40 pm-4:35 pm

2 stops15h 55m

$577

LondonBaltimore

STN - BWI

STNBWI

London Stansted

Thu 2/5

8:30 am-6:40 pm

2 stops15h 10m

Baltimore/Washington

Mon 2/9

7:40 pm-6:20 pm

2 stops17h 40m

$578

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Thu 2/26

6:30 am-6:30 pm

2 stops17h 00m

Washington, D.C. Dulles Intl

Sun 3/1

7:40 pm-11:00 pm

2 stops22h 20m

$579

LondonBaltimore

STN - BWI

STNBWI

London Stansted

Mon 2/2

6:30 am-6:40 pm

2 stops17h 10m

Baltimore/Washington

Thu 2/5

7:40 pm-4:35 pm

2 stops15h 55m

$583

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Sun 3/1

8:55 am-3:15 pm

2 stops35h 20m

Washington, D.C. Dulles Intl

Tue 3/3

5:30 pm-11:50 pm

2 stops25h 20m

$593

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Mon 2/23

9:35 am-2:35 pm

2 stops34h 00m

Washington, D.C. Dulles Intl

Wed 2/25

7:40 pm-10:15 pm

2 stops21h 35m

$603

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Mon 3/9

11:55 am-3:35 pm

2 stops31h 40m

Washington, D.C. Dulles Intl

Mon 3/16

6:30 pm-11:55 pm

2 stops25h 25m

$607

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Mon 2/2

7:35 am-6:30 pm

2 stops15h 55m

Washington, D.C. Dulles Intl

Thu 2/5

7:40 pm-11:40 pm

2 stops23h 00m

$609

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 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 $743. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Monday, 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 $895.

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

In the afternoon 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 $818. Flying to Washington, D.C. in the afternoon 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 $851. 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

12h 15m

Direct flights

None
The fastest flight from London Stansted Airport to Washington, D.C. takes 12h 15m
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

  • 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 15m 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
Waldorf
Woodbridge
Tysons
Laurel
Colonial Beach
Silver Spring
Towson
Fredericksburg
Rockville
Gaithersburg
Manassas
Springfield
Fairfax
Linthicum Heights
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