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Cheap flights from London Stansted Airport to Washington, D.C. from $435

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 10/5. 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 London Stansted Airport to Washington, D.C. (STN-WAS)

Cheap round-trip flights

PLAY Logo
11:40 am - 5:40 pmSTN-BWI
11h 00m1 stop
PLAY Logo
6:50 pm - 10:40 amBWI-STN
10h 50m1 stop
$543PLAY
Find Deal
Tue, Oct 14 - Fri, Oct 17
PLAY Logo
11:40 am - 5:40 pmSTN-BWI
11h 00m1 stop
PLAY Logo
6:50 pm - 10:40 amBWI-STN
10h 50m1 stop
$546PLAY
Find Deal
Thu, Oct 9 - Wed, Oct 15
PLAY Logo
11:40 am - 5:40 pmSTN-BWI
11h 00m1 stop
PLAY Logo
6:50 pm - 10:40 amBWI-STN
10h 50m1 stop
$549PLAY
Find Deal
Thu, Sep 18 - Wed, Sep 24
Logo
6:35 am - 6:55 pmSTN-IAD
17h 20m1 stop
Logo
5:05 pm - 7:50 amIAD-STN
9h 45m1 stop
$551
Find Deal
Sat, Oct 25 - Sun, Nov 2
Logo
7:15 am - 10:10 pmSTN-IAD
19h 55m2 stops
Logo
8:30 pm - 4:05 pmIAD-STN
14h 35m2 stops
$552
Find Deal
Fri, Oct 10 - Mon, Oct 13
Logo
5:55 pm - 5:40 pmSTN-BWI
28h 45m2 stops
Logo
6:50 pm - 10:40 amBWI-STN
10h 50m1 stop
$553
Find Deal
Mon, Sep 22 - Sat, Sep 27
Logo
9:20 am - 4:15 pmSTN-IAD
35h 55m2 stops
Logo
9:45 am - 9:00 pmIAD-STN
30h 15m2 stops
$553
Find Deal
Thu, Sep 18 - Mon, Sep 22
PLAY Logo
11:40 am - 5:40 pmSTN-BWI
11h 00m1 stop
PLAY Logo
6:50 pm - 10:40 amBWI-STN
10h 50m1 stop
$556PLAY
Find Deal
Thu, Oct 9 - Sat, Oct 11
WorldTicket Logo
11:40 am - 5:40 pmSTN-BWI
11h 00m1 stop
WorldTicket Logo
6:50 pm - 10:40 amBWI-STN
10h 50m1 stop
$598WorldTicket
Find Deal
Thu, Oct 9 - Mon, Oct 13
WorldTicket Logo
11:40 am - 5:40 pmSTN-BWI
11h 00m1 stop
WorldTicket Logo
6:50 pm - 10:40 amBWI-STN
10h 50m1 stop
$599WorldTicket
Find Deal
Thu, Oct 9 - Mon, Oct 13

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
Sep 7
STN7:25 amLondon Stansted
16h 40m
1 stop
IAD7:05 pmWashington, D.C. Dulles Intl
Sep 7
IAD9:05 pmWashington, D.C. Dulles Intl
28h 15m
1 stop
STN6:20 amLondon Stansted
$902
Find similar
Royal Air Maroc
Sep 5
STN7:25 amLondon Stansted
16h 40m
1 stop
IAD7:05 pmWashington, D.C. Dulles Intl
Sep 7
IAD9:05 pmWashington, D.C. Dulles Intl
28h 15m
1 stop
STN6:20 amLondon Stansted
$1,030
Find similar
Royal Air Maroc
Sep 7
STN7:25 amLondon Stansted
16h 40m
1 stop
IAD7:05 pmWashington, D.C. Dulles Intl
Sep 12
IAD9:05 pmWashington, D.C. Dulles Intl
28h 15m
1 stop
STN6:20 amLondon Stansted
$1,069
Find similar

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

Our best WorldTicket deals on London Stansted Airport to Washington, D.C. flight tickets
WorldTicket
Oct 9
STN11:40 amLondon Stansted
11h 00m
1 stop
BWI5:40 pmBaltimore/Washington
Oct 13
BWI6:50 pmBaltimore/Washington
10h 50m
1 stop
STN10:40 amLondon Stansted
$598
Find similar
WorldTicket
Oct 9
STN11:40 amLondon Stansted
11h 00m
1 stop
BWI5:40 pmBaltimore/Washington
Oct 13
BWI6:50 pmBaltimore/Washington
10h 50m
1 stop
STN10:40 amLondon Stansted
$599
Find similar
WorldTicket
Sep 12
STN11:40 amLondon Stansted
11h 00m
1 stop
BWI5:40 pmBaltimore/Washington
Oct 15
BWI6:50 pmBaltimore/Washington
10h 50m
1 stop
STN10:40 amLondon Stansted
$688
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 September 4, 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

LondonBaltimore

STN - BWI

STNBWI

London Stansted

Tue 10/14

11:40 am-5:40 pm

1 stop11h 00m

Baltimore/Washington

Fri 10/17

6:50 pm-10:40 am

1 stop10h 50m

$543

LondonBaltimore

STN - BWI

STNBWI

London Stansted

Thu 10/9

11:40 am-5:40 pm

1 stop11h 00m

Baltimore/Washington

Wed 10/15

6:50 pm-10:40 am

1 stop10h 50m

$546

LondonBaltimore

STN - BWI

STNBWI

London Stansted

Thu 9/18

11:40 am-5:40 pm

1 stop11h 00m

Baltimore/Washington

Wed 9/24

6:50 pm-10:40 am

1 stop10h 50m

$549

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Sat 10/25

6:35 am-6:55 pm

1 stop17h 20m

Washington, D.C. Dulles Intl

Sun 11/2

5:05 pm-7:50 am

1 stop9h 45m

$551

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Fri 10/10

7:15 am-10:10 pm

2 stops19h 55m

Washington, D.C. Dulles Intl

Mon 10/13

8:30 pm-4:05 pm

2 stops14h 35m

$552

LondonBaltimore

STN - BWI

STNBWI

London Stansted

Mon 9/22

5:55 pm-5:40 pm

2 stops28h 45m

Baltimore/Washington

Sat 9/27

6:50 pm-10:40 am

1 stop10h 50m

$553

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Thu 9/18

9:20 am-4:15 pm

2 stops35h 55m

Washington, D.C. Dulles Intl

Mon 9/22

9:45 am-9:00 pm

2 stops30h 15m

$553

LondonBaltimore

STN - BWI

STNBWI

London Stansted

Thu 10/9

11:40 am-5:40 pm

1 stop11h 00m

Baltimore/Washington

Sat 10/11

6:50 pm-10:40 am

1 stop10h 50m

$556

LondonBaltimore

STN - BWI

STNBWI

London Stansted

Thu 10/9

11:40 am-5:40 pm

1 stop11h 00m

Baltimore/Washington

Mon 10/13

6:50 pm-10:40 am

1 stop10h 50m

$598

LondonBaltimore

STN - BWI

STNBWI

London Stansted

Thu 10/9

11:40 am-5:40 pm

1 stop11h 00m

Baltimore/Washington

Mon 10/13

6:50 pm-10:40 am

1 stop10h 50m

$599

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 month to fly to Washington, D.C.?

The month of February is, on average, the cheapest month to fly to Washington, D.C. from London Stansted Airport, with most prices found around $317. If you’re not able to fly to Washington, D.C. in February, then April is your next best option. Flight prices from London Stansted Airport to Washington, D.C. during April average around $368.

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 $811. 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 $947.

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 at noon because they tend to be around $875. 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 11h 00m 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 many operators does momondo search for flights from London Stansted Airport to Washington, D.C.?

  • 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.

Best airlines flying from London Stansted Airport to Washington, D.C.

Compare and see reviews for airlines that fly from London Stansted Airport to Washington, D.C. with momondo
Airline
Rating
Free Cancellation
Price
PLAYPriceFrom $304Free CancellationRating
7.0
103 reviews
Search PLAY flights

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

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

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