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Cheap flights from London Stansted Airport to Washington, D.C. from £329

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 22/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags
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Find the cheapest flights from London Stansted Airport to Washington, D.C.

Cheap return flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
17:35 - 19:20
STN
-
IAD
30h 45m
2 stops
Multiple Airlines Logo
20:30 - 18:50
IAD
-
STN
17h 20m
2 stops
£439Multiple Airlines
Thu, 3 Sep - Mon, 7 Sep
Multiple Airlines Logo
10:45 - 22:15
STN
-
IAD
16h 30m
2 stops
Multiple Airlines Logo
20:30 - 00:10
IAD
-
STN
22h 40m
2 stops
£443Multiple Airlines
Tue, 8 Sep - Tue, 15 Sep
Multiple Airlines Logo
22:50 - 20:24
STN
-
IAD
26h 34m
2 stops
Multiple Airlines Logo
20:30 - 19:35
IAD
-
STN
18h 05m
2 stops
£444Multiple Airlines
Fri, 28 Aug - Tue, 1 Sep
Multiple Airlines Logo
22:00 - 21:14
STN
-
IAD
28h 14m
3 stops
Multiple Airlines Logo
20:30 - 23:25
IAD
-
STN
21h 55m
2 stops
£460Multiple Airlines
Thu, 27 Aug - Sun, 30 Aug
Multiple Airlines Logo
06:30 - 15:24
STN
-
IAD
37h 54m
3 stops
Multiple Airlines Logo
20:30 - 19:20
IAD
-
STN
17h 50m
2 stops
£462Multiple Airlines
Thu, 20 Aug - Fri, 28 Aug
Multiple Airlines Logo
06:35 - 20:24
STN
-
IAD
18h 49m
2 stops
Multiple Airlines Logo
20:30 - 23:20
IAD
-
STN
21h 50m
2 stops
£464Multiple Airlines
Fri, 28 Aug - Mon, 31 Aug
Multiple Airlines Logo
22:00 - 20:24
STN
-
IAD
27h 24m
2 stops
Multiple Airlines Logo
20:30 - 23:25
IAD
-
STN
21h 55m
2 stops
£465Multiple Airlines
Thu, 27 Aug - Sun, 30 Aug
Multiple Airlines Logo
06:30 - 22:15
STN
-
IAD
20h 45m
2 stops
Multiple Airlines Logo
20:30 - 23:20
IAD
-
STN
21h 50m
2 stops
£469Multiple Airlines
Wed, 29 Jul - Wed, 5 Aug
Multiple Airlines Logo
06:30 - 15:24
STN
-
IAD
37h 54m
3 stops
Multiple Airlines Logo
20:30 - 23:20
IAD
-
STN
21h 50m
2 stops
£470Multiple Airlines
Thu, 20 Aug - Mon, 31 Aug
Multiple Airlines Logo
06:30 - 19:20
STN
-
IAD
17h 50m
2 stops
Multiple Airlines Logo
20:30 - 19:25
IAD
-
STN
17h 55m
2 stops
£471Multiple Airlines
Thu, 3 Sep - Mon, 7 Sep

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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
5 Jul
STN07:25London Stansted
16h 35m
1 stop
IAD19:00Washington, D.C. Dulles Intl
30 Sept
IAD21:00Washington, D.C. Dulles Intl
28h 20m
1 stop
STN06:20London Stansted
£647
Royal Air Maroc
6 Jul
STN07:25London Stansted
16h 35m
1 stop
IAD19:00Washington, D.C. Dulles Intl
18 Jun
IAD21:00Washington, D.C. Dulles Intl
28h 20m
1 stop
STN06:20London Stansted
£649
Royal Air Maroc
6 Jul
STN07:25London Stansted
16h 35m
1 stop
IAD19:00Washington, D.C. Dulles Intl
29 Jul
IAD21:00Washington, D.C. Dulles Intl
28h 20m
1 stop
STN06:20London Stansted
£673

momondo Fare Finder

 
Customise 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 279,928 searches. Data last updated 5 July 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 return flight

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Thu 3/9

17:35-19:20

2 stops30h 45m

Washington, D.C. Dulles Intl

Mon 7/9

20:30-18:50

2 stops17h 20m

£439

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Tue 8/9

10:45-22:15

2 stops16h 30m

Washington, D.C. Dulles Intl

Tue 15/9

20:30-00:10

2 stops22h 40m

£443

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Fri 28/8

22:50-20:24

2 stops26h 34m

Washington, D.C. Dulles Intl

Tue 1/9

20:30-19:35

2 stops18h 05m

£444

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Thu 27/8

22:00-21:14

3 stops28h 14m

Washington, D.C. Dulles Intl

Sun 30/8

20:30-23:25

2 stops21h 55m

£460

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Thu 20/8

06:30-15:24

3 stops37h 54m

Washington, D.C. Dulles Intl

Fri 28/8

20:30-19:20

2 stops17h 50m

£462

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Fri 28/8

06:35-20:24

2 stops18h 49m

Washington, D.C. Dulles Intl

Mon 31/8

20:30-23:20

2 stops21h 50m

£464

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Thu 27/8

22:00-20:24

2 stops27h 24m

Washington, D.C. Dulles Intl

Sun 30/8

20:30-23:25

2 stops21h 55m

£465

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Wed 29/7

06:30-22:15

2 stops20h 45m

Washington, D.C. Dulles Intl

Wed 5/8

20:30-23:20

2 stops21h 50m

£469

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Thu 20/8

06:30-15:24

3 stops37h 54m

Washington, D.C. Dulles Intl

Mon 31/8

20:30-23:20

2 stops21h 50m

£470
Fastest return journey

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Thu 3/9

06:30-19:20

2 stops17h 50m

Washington, D.C. Dulles Intl

Mon 7/9

20:30-19:25

2 stops17h 55m

£471

Flights are sorted by cheapest return flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 £573. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Sunday is the most expensive day to depart from London Stansted Airport because it is more convenient for both business and leisure travellers. As a result, prices tend to be around £617.

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

At midday 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 £577. Flying to Washington, D.C. at midday is an ideal time because this is during off-peak travel hours. Flights to Washington, D.C. are more costly in the morning, with an average ticket price of £587. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

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 return 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

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

  • How far is London Stansted to Washington, D.C. by plane?

    A flight from London Stansted to Washington, D.C. will travel around 3668.5 mi. By plane, this route typically takes 12h 15m.

  • 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. refresh daily.

  • 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 that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check 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 required travel and health documents for your Washington, D.C. 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 Washington, D.C.. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

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

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
College Park
Springfield
Fairfax
Arlington
Gettysburg
Linthicum Heights
National Harbor
Ellicott City
Cambridge
Glen Burnie
Westminster
Laurel
Lutherville Timonium
Lexington Park
Owings Mills
Woodbridge
Bethesda
Silver Spring
Rockville

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from London to Washington, D.C.. momondo saves you time and could save you money on your trip.

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

Yes. All flights to Washington, D.C. from London on momondo can be compared and filtered by various policies on offer, including flexible booking.

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?

Of course. momondo tracks the price of London to Washington, D.C. 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 Washington, D.C. trip

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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