How often are flights from London to Washington, D.C. delayed?

Historically, on average around 0% of flights between London and Washington, D.C. have experienced a delay on any given week. The average delay length over the past 12 months has been 0 minutes.

What is the most punctual flight time for London to Washington, D.C. flights?

Generally, flights departing at night tend to experience fewer delays. Flights at night have, in the past, seen delays more frequently in comparison.

What day of the week experiences the fewest flight delays on this route?

Friday is statistically the day of the week which experiences the fewest number of delays on this flight route. Friday has historically seen more delays on average compared to the rest of the week.

What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?

The necessary travel and health documents for your Washington, D.C. Dulles Intl Airport 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.

$493 Cheap Flights from London Stansted Airport to Washington, D.C. Dulles Intl Airport in 2026

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0 bags

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

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One-way

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Enter your travel dates to find the best prices.

10:45 pm - 9:18 pm

STN

IAD

27h 33m

3 stops

8:30 pm - 6:50 pm

IAD

STN

17h 20m

2 stops

$545Multiple Airlines

Mon, Apr 13 - Mon, Apr 27

10:50 pm - 8:29 pm

STN

IAD

26h 39m

2 stops

8:30 pm - 12:05 am

IAD

STN

22h 35m

2 stops

$546Multiple Airlines

Fri, Apr 17 - Sat, Apr 25

10:50 pm - 9:18 pm

STN

IAD

27h 28m

3 stops

8:30 pm - 12:05 am

IAD

STN

22h 35m

2 stops

$564Multiple Airlines

Fri, Apr 17 - Sat, Apr 25

8:10 am - 3:10 pm

STN

IAD

36h 00m

2 stops

10:35 pm - 6:30 pm

IAD

STN

14h 55m

2 stops

$565Multiple Airlines

Mon, Apr 13 - Mon, Apr 27

2:45 pm - 3:10 pm

STN

IAD

29h 25m

2 stops

8:30 pm - 12:20 am

IAD

STN

22h 50m

2 stops

$567Multiple Airlines

Thu, Apr 9 - Mon, Apr 13

10:00 pm - 5:00 pm

STN

IAD

24h 00m

2 stops

8:20 pm - 11:20 pm

IAD

STN

22h 00m

2 stops

$571Multiple Airlines

Fri, Apr 17 - Sat, Apr 25

10:45 pm - 9:18 pm

STN

IAD

27h 33m

3 stops

8:30 pm - 10:55 pm

IAD

STN

21h 25m

2 stops

$572Multiple Airlines

Mon, Apr 20 - Thu, Apr 23

8:45 pm - 3:10 pm

STN

IAD

23h 25m

2 stops

8:30 pm - 6:50 pm

IAD

STN

17h 20m

2 stops

$581Multiple Airlines

Mon, Apr 13 - Mon, Apr 27

5:55 am - 9:00 pm

STN

IAD

20h 05m

2 stops

6:30 pm - 11:50 pm

IAD

STN

25h 20m

2 stops

$584Multiple Airlines

Wed, Mar 4 - Tue, Mar 17

8:10 am - 3:10 pm

STN

IAD

36h 00m

2 stops

8:30 pm - 12:50 am

IAD

STN

23h 20m

2 stops

$595Multiple Airlines

Mon, May 4 - Fri, May 8

momondo Fare Finder

Use the filters below to find and compare flights from London Stansted Airport to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Mon 4/13

10:45 pm-9:18 pm

3 stops27h 33m

Washington, D.C. Dulles Intl

Mon 4/27

8:30 pm-6:50 pm

2 stops17h 20m

$545

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Fri 4/17

10:50 pm-8:29 pm

2 stops26h 39m

Washington, D.C. Dulles Intl

Sat 4/25

8:30 pm-12:05 am

2 stops22h 35m

$546

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Fri 4/17

10:50 pm-9:18 pm

3 stops27h 28m

Washington, D.C. Dulles Intl

Sat 4/25

8:30 pm-12:05 am

2 stops22h 35m

$564

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Mon 4/13

8:10 am-3:10 pm

2 stops36h 00m

Washington, D.C. Dulles Intl

Mon 4/27

10:35 pm-6:30 pm

2 stops14h 55m

$565

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Thu 4/9

2:45 pm-3:10 pm

2 stops29h 25m

Washington, D.C. Dulles Intl

Mon 4/13

8:30 pm-12:20 am

2 stops22h 50m

$567

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Fri 4/17

10:00 pm-5:00 pm

2 stops24h 00m

Washington, D.C. Dulles Intl

Sat 4/25

8:20 pm-11:20 pm

2 stops22h 00m

$571

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Mon 4/20

10:45 pm-9:18 pm

3 stops27h 33m

Washington, D.C. Dulles Intl

Thu 4/23

8:30 pm-10:55 pm

2 stops21h 25m

$572

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Mon 4/13

8:45 pm-3:10 pm

2 stops23h 25m

Washington, D.C. Dulles Intl

Mon 4/27

8:30 pm-6:50 pm

2 stops17h 20m

$581

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Wed 3/4

5:55 am-9:00 pm

2 stops20h 05m

Washington, D.C. Dulles Intl

Tue 3/17

6:30 pm-11:50 pm

2 stops25h 20m

$584

LondonWashington, D.C.

STN - IAD

STNIAD

London Stansted

Mon 5/4

8:10 am-3:10 pm

2 stops36h 00m

Washington, D.C. Dulles Intl

Fri 5/8

8:30 pm-12:50 am

2 stops23h 20m

$595

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

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

Prices

Delays

What is the cheapest day to depart on your flight to Washington, D.C. Dulles Intl Airport?

Our data shows that Thursday is the least expensive day to fly to Washington, D.C. Dulles Intl Airport. Tickets to fly out on this day can be as low as $749. When flying out on a Tuesday, the most expensive travel day of the week, you can expect to see flight prices from London Stansted Airport to Washington, D.C. Dulles Intl Airport for around $879.

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

Flying to Washington, D.C. Dulles Intl Airport from London Stansted Airport in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $817 when looking at flights departing in the afternoon. If you have a flexible travel schedule, then try to avoid flying at noon when prices are $849 on average. Flights to Washington, D.C. Dulles Intl Airport from London Stansted Airport at noon are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

Are you open to changing your travel dates? Check out the ideal times to fly from London Stansted Airport to Washington, D.C. Dulles Intl Airport 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. Dulles Intl Airport (STN to IAD) flight deals and tips

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

Fastest flight time	12h 15m
Direct flights	None

The fastest flight from London Stansted Airport to Washington, D.C. Dulles Intl Airport takes 12h 15m

There are no direct flights from London Stansted Airport to Washington, D.C. Dulles Intl Airport. There are no popular flight routes from London Stansted Airport to Washington, D.C. Dulles Intl Airport.

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How far is London Stansted to Washington, D.C. Dulles Intl by plane?
The distance between London Stansted and Washington, D.C. Dulles Intl is about 3683.3 mi. Flights usually cover this in 12h 15m, depending on flying conditions and air traffic around both airports.
When did momondo last update prices for flights from London Stansted Airport to Washington, D.C. Dulles Intl Airport?
Prices for flights from London Stansted Airport to Washington, D.C. Dulles Intl Airport were last updated today.
How old do you have to be to fly from London Stansted Airport to Washington, D.C. Dulles Intl Airport?
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. Dulles Intl Airport.
What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?
The necessary travel and health documents for your Washington, D.C. Dulles Intl Airport 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.

Alexandria

National Harbor

Gettysburg

Arlington

Winchester

Waldorf

Woodbridge

Colonial Beach

Laurel

Silver Spring

Tysons

Towson

Fredericksburg

Gaithersburg

Rockville

Manassas

Springfield

Sterling

Fairfax

Bethesda

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.?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Washington, D.C. from London.

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.