How long is the flight from London Stansted Airport to Washington, D.C. Dulles Intl Airport?

Departing from London Stansted Airport to Washington, D.C. Dulles Intl Airport will take you 37h 30m. There are 3683 mi between London Stansted Airport and Washington, D.C. Dulles Intl Airport.

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 66.0 - 102.0 inches per month. May is typically the wettest month, when rainfall can reach 102.0 mm. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 66.0 mm.

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 27.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 2.0 C).

What is the cheapest time of day to fly from STN to IAD?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London Stansted Airport to Washington, D.C. Dulles Intl Airport as you normally would.

Can I find deals for flights from Stansted to Dulles Intl that include hotel bookings?

Yes. In addition to deals on Stansted to Dulles Intl flights, Cheapflights offers holiday packages that include both flights and hotel.

How can I find direct flights from Stansted to Dulles Intl?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Stansted to Dulles Intl.

Can I find deals for business class flights from Stansted to Dulles Intl?

Yes. Cheapflights offers flight deals from Stansted to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

£358+ Cheap Flights from London Stansted Airport to Washington, D.C. Dulles Intl Airport

Cheap flight deals from Stansted to Dulles Intl

Enter your travel dates to find the best prices.

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Cheapest flights from Stansted to Dulles Intl
Explore the most affordable flight options available from Stansted to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 September 2026.

Sun 1/1106:30 -

1 stop17h 50m

Sun 8/1117:15 -

1 stop11h 25m

Deal found 17/9£433

Tue 24/1108:55 -

1 stop15h 25m

Mon 30/1120:50 -

1 stop12h 15m

Deal found 17/9£447

Tue 3/1112:05 -

1 stop12h 15m

Tue 10/1120:50 -

1 stop12h 15m

Deal found 18/9£454

Mon 2/1110:50 -

1 stop13h 30m

Mon 9/1117:15 -

1 stop12h 05m

Deal found 18/9£455

Wed 4/1108:15 -

1 stop14h 00m

Thu 12/1120:30 -

1 stop20h 25m

Deal found 19/9£458

Wed 25/1108:40 -

1 stop15h 40m

Tue 1/1217:15 -

1 stop12h 05m

Deal found 20/9£458

Thu 3/1206:15 -

1 stop15h 05m

Tue 8/1217:50 -

1 stop13h 15m

Deal found 20/9£459

Fri 20/1108:30 -

1 stop12h 15m

Sat 28/1117:15 -

1 stop9h 25m

Deal found 18/9£460

Find flight deals from Stansted to Dulles Intl

Round-trip from	£433
One-way from	£358
Popular in	June
Cheapest in	February
Average price	£487

1/11-8/11
2 total stops
29h 15m total
London to Washington, D.C.

Search Deals

4/11-31/12
1 total stop
27h 25m total
London to Washington, D.C.

Search Deals

Highest demand for flights based on searches. 9% potential increase in price (£39 potential increase over avg. return price).

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Cheapest flight prices on average. 1% potential price decrease (£5 potential savings vs. average return price).

Search Deals

Average for round-trip flights in September 2026

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Cheapflights 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.

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Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonWashington, D.C.

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

STNIAD

London Stansted

Mon 23/11

20:30-15:45

1 stop24h 15m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£381

LondonWashington, D.C.

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

STNIAD

London Stansted

Mon 28/9

21:50-15:10

3 stops46h 20m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£387

LondonWashington, D.C.

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

STNIAD

London Stansted

Wed 28/10

15:05-16:15

2 stops29h 10m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£389

Fastest return journey

LondonWashington, D.C.

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

STNIAD

London Stansted

Fri 12/3

06:00-16:20

1 stop15h 20m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£391

LondonWashington, D.C.

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

STNIAD

London Stansted

Fri 13/11

06:00-16:20

1 stop15h 20m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£409

LondonWashington, D.C.

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

STNIAD

London Stansted

Sat 10/10

18:45-15:10

3 stops49h 25m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£430

LondonWashington, D.C.

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

STNIAD

London Stansted

Sun 27/9

21:35-19:00

3 stops26h 25m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£495

LondonWashington, D.C.

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

STNIAD

London Stansted

Fri 25/9

06:45-20:35

2 stops18h 50m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£511

LondonWashington, D.C.

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

STNIAD

London Stansted

Mon 4/1

16:05-15:45

1 stop28h 40m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£523

LondonWashington, D.C.

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

STNIAD

London Stansted

Sun 3/1

21:00-18:30

3 stops26h 30m

Washington, D.C. Dulles Intl

Wed 31/12

00:00-06:00

Nonstop0h 00m

£534

Flights are sorted by cheapest return flights first.

Deals found on 20/9

Showing 1-10 of 21 resultsSorted by cheapest first

Best time to book a flight from Stansted to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Stansted with our price prediction graph.

STN-IAD

Estimated return price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Related info for your journey

How long is the flight from London Stansted Airport to Washington, D.C. Dulles Intl Airport?
Departing from London Stansted Airport to Washington, D.C. Dulles Intl Airport will take you 37h 30m. There are 3683 mi between London Stansted Airport and Washington, D.C. Dulles Intl Airport.
Can I find deals for flights from Stansted to Dulles Intl that include hotel bookings?
Yes. In addition to deals on Stansted to Dulles Intl flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Stansted to Dulles Intl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Stansted to Dulles Intl.
Can I find deals for business class flights from Stansted to Dulles Intl?
Yes. Cheapflights offers flight deals from Stansted to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to Dulles Intl from Stansted.

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Cheap flights from London Stansted Airport to Washington, D.C. Dulles Intl Airport from £358

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 4/11. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from Stansted to Dulles Intl

Cheapest flights from Stansted to Dulles IntlExplore the most affordable flight options available from Stansted to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 September 2026.

Explore the most affordable flight options available from Stansted to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 September 2026.

Best flights from Stansted to Dulles IntlDiscover carefully curated flight deals from Stansted to Dulles Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 21 September 2026.

Discover carefully curated flight deals from Stansted to Dulles Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 21 September 2026.

Last-minute flights from Stansted to Dulles IntlDiscover last-minute flight deals from Stansted to Dulles Intl. Data last updated 21 September 2026 and is based on user searches.

Discover last-minute flight deals from Stansted to Dulles Intl. Data last updated 21 September 2026 and is based on user searches.

One-way flights from Stansted to Dulles IntlSearch for one-way flight options from Stansted to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated 21 September 2026.

Search for one-way flight options from Stansted to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated 21 September 2026.

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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.

Best time to book a flight from Stansted to Dulles Intl

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Related info for your journey

How long is the flight from London Stansted Airport to Washington, D.C. Dulles Intl Airport?

Can I find deals for flights from Stansted to Dulles Intl that include hotel bookings?

How can I find direct flights from Stansted to Dulles Intl?

Can I find deals for business class flights from Stansted to Dulles Intl?

Travelling to a place near Washington, D.C. Dulles Intl Airport?

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Alternative routes for Stansted to Dulles Intl

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Complete your trip

Complete your trip to Dulles Intl by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to District of Columbia

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Other flights to Dulles Intl

Explore flights to Dulles Intl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 21 September 2026.

Search flights from Stansted to Dulles Intl by cabin class

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Stansted and Dulles Intl flights

Browse other Stansted and Dulles Intl flight options. Last updated on 21 September 2026.

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Can Cheapflights notify me if prices for flights from Stansted to Dulles Intl become cheaper?

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Cheapest flights from Stansted to Dulles Intl
Explore the most affordable flight options available from Stansted to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 21 September 2026.

Best flights from Stansted to Dulles Intl
Discover carefully curated flight deals from Stansted to Dulles Intl that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 21 September 2026.

Last-minute flights from Stansted to Dulles Intl
Discover last-minute flight deals from Stansted to Dulles Intl. Data last updated 21 September 2026 and is based on user searches.

One-way flights from Stansted to Dulles Intl
Search for one-way flight options from Stansted to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated 21 September 2026.