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

Departing from London, Ontario to Washington, D.C. Dulles Intl Airport will take you 4h 45m. Airlines will cover a distance of 549 km.

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 66.0 - 102.0 mm 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 YXU to IAD?

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

What airport do you fly from for flights from London to Washington, D.C. Dulles Intl?

Most people fly from London (YXU) if they book a flight from London to Washington, D.C. Dulles Intl. On average, London has 0 outbound flights to Washington, D.C. Dulles Intl per day from 0 airlines. London is conveniently located just 8.6 km from London’s city centre.

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

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

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

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

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

Yes. Cheapflights offers flight deals from London 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.

C$ 566+ Cheap Flights from London, ON to Washington, D.C. Dulles Intl Airport

Cheap flight deals from London to Dulles Intl

Enter your travel dates to find the best prices.

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Cheapest flights from London to Dulles Intl
Explore the most affordable flight options available from London to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 October 2026.

Thu 3/1210:00 a.m. -

1 stop9h 48m

Thu 10/126:33 p.m. -

2 stops22h 27m

Deal found 19/10C$ 657

Mon 16/113:25 p.m. -

1 stop4h 45m

Wed 18/119:55 a.m. -

1 stop4h 47m

Deal found 19/10C$ 925

Find flight deals from London to Dulles Intl

Round-trip from	C$ 657
One-way from	C$ 566

3/12-10/12
3 total stops
32h 15m total
London to Washington, D.C.

Search Deals

2/12-31/12
2 total stops
32h 09m total
London to Washington, D.C.

Search Deals

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

LondonWashington, D.C.

YXU London - IAD Washington, D.C. Dulles Intl

YXUIAD

London

Wed 2/12

6:40 a.m.-8:12 p.m.

3 stops37h 32m

Washington, D.C. Dulles Intl

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 590

LondonWashington, D.C.

YXU London - IAD Washington, D.C. Dulles Intl

YXUIAD

London

Thu 3/12

3:20 p.m.-9:26 p.m.

1 stop6h 06m

Washington, D.C. Dulles Intl

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 660

LondonWashington, D.C.

YXU London - IAD Washington, D.C. Dulles Intl

YXUIAD

London

Wed 2/12

3:20 p.m.-12:24 a.m.

2 stops9h 04m

Washington, D.C. Dulles Intl

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 667

LondonWashington, D.C.

YXU London - IAD Washington, D.C. Dulles Intl

YXUIAD

London

Thu 3/12

10:00 a.m.-2:25 p.m.

3 stops28h 25m

Washington, D.C. Dulles Intl

Thu 10/12

10:35 p.m.-5:00 p.m.

2 stops18h 25m

C$ 877

LondonWashington, D.C.

YXU London - IAD Washington, D.C. Dulles Intl

YXUIAD

London

Mon 16/11

3:25 p.m.-8:10 p.m.

1 stop4h 45m

Washington, D.C. Dulles Intl

Wed 18/11

9:55 a.m.-2:42 p.m.

1 stop4h 47m

C$ 925

Quickest round-trip

LondonWashington, D.C.

YXU London - IAD Washington, D.C. Dulles Intl

YXUIAD

London

Sun 29/11

3:25 p.m.-8:10 p.m.

1 stop4h 45m

Washington, D.C. Dulles Intl

Wed 31/12

12:00 a.m.-12:00 a.m.

Nonstop0h 00m

C$ 1,046

LondonWashington, D.C.

YXU London - IAD Washington, D.C. Dulles Intl

YXUIAD

London

Sun 10/1

5:30 a.m.-1:33 p.m.

2 stops8h 03m

Washington, D.C. Dulles Intl

Sun 10/1

4:30 p.m.-9:52 p.m.

1 stop5h 22m

C$ 1,252

LondonWashington, D.C.

YXU London - IAD Washington, D.C. Dulles Intl

YXUIAD

London

Mon 11/1

3:20 p.m.-9:28 p.m.

1 stop6h 08m

Washington, D.C. Dulles Intl

Thu 14/1

10:05 a.m.-9:52 p.m.

2 stops11h 47m

C$ 1,252

LondonWashington, D.C.

YXU London - IAD Washington, D.C. Dulles Intl

YXUIAD

London

Sun 10/1

3:20 p.m.-9:28 p.m.

1 stop6h 08m

Washington, D.C. Dulles Intl

Thu 14/1

9:55 a.m.-2:42 p.m.

1 stop4h 47m

C$ 1,252

Flights are sorted by cheapest round-trip flights first.

Deals found on 18/10

Sorted by cheapest first

Best time to book a flight from London to Dulles Intl

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

YXU-IAD

Estimated round-trip 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

What airport do you fly from for flights from London to Washington, D.C. Dulles Intl?
Most people fly from London (YXU) if they book a flight from London to Washington, D.C. Dulles Intl. On average, London has 0 outbound flights to Washington, D.C. Dulles Intl per day from 0 airlines. London is conveniently located just 8.6 km from London’s city centre.
How long is the flight from London, Ontario to Washington, D.C. Dulles Intl Airport?
Departing from London, Ontario to Washington, D.C. Dulles Intl Airport will take you 4h 45m. Airlines will cover a distance of 549 km.
Can I find deals for flights from London to Dulles Intl that include hotel bookings?
Yes. In addition to deals on London to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from London to Dulles Intl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Dulles Intl.
Can I find deals for business class flights from London to Dulles Intl?
Yes. Cheapflights offers flight deals from London 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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How does Cheapflights help users find flights from London to Dulles Intl?

Deals for London to Dulles Intl flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from London to Dulles Intl?

Cheapflights helps you find that perfect flight to Dulles Intl from London by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from London to Dulles Intl with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from London to Dulles Intl, users can toggle the no change fees filter when performing a flight search.

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

Yes, Cheapflights offers price alerts on London to Dulles Intl flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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Cheap flights from London, ON to Washington, D.C. Dulles Intl Airport from C$ 566

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/12. Fares are subject to change and may not be available on all flights or dates of travel.

Cheap flight deals from London to Dulles Intl

Cheapest flights from London to Dulles IntlExplore the most affordable flight options available from London to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 October 2026.

Explore the most affordable flight options available from London to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 October 2026.

Best flights from London to Dulles IntlDiscover carefully curated flight deals from London to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 20 October 2026.

Discover carefully curated flight deals from London to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 20 October 2026.

Last-minute flights from London to Dulles IntlDiscover last-minute flight deals from London to Dulles Intl. Data last updated 20 October 2026 and is based on user searches.

Discover last-minute flight deals from London to Dulles Intl. Data last updated 20 October 2026 and is based on user searches.

One-way flights from London to Dulles IntlSearch for one-way flight options from London to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated 20 October 2026.

Search for one-way flight options from London to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated 20 October 2026.

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

Best time to book a flight from London to Dulles Intl

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Related info for your journey

What airport do you fly from for flights from London to Washington, D.C. Dulles Intl?

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

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

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

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

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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for London to Dulles Intl

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Complete your trip

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

Direct flights to District of Columbia

Book a non-stop flight to one of these other cities located in District of Columbia.

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 20 October 2026.

Search flights from London to Dulles Intl by cabin class

Find flights from London to Dulles Intl, based on your preferred cabin class, be it economy, premium economy, business, or first class.

London and Dulles Intl flights

Browse other London and Dulles Intl flight options. Last updated on 20 October 2026.

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How does Cheapflights help users find flights from London to Dulles Intl?

Why should you use Cheapflights to find cheap flight tickets from London to Dulles Intl?

Can Cheapflights find flights from London to Dulles Intl with no change fees?

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

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Cheapest flights from London to Dulles Intl
Explore the most affordable flight options available from London to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 October 2026.

Best flights from London to Dulles Intl
Discover carefully curated flight deals from London to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated 20 October 2026.

Last-minute flights from London to Dulles Intl
Discover last-minute flight deals from London to Dulles Intl. Data last updated 20 October 2026 and is based on user searches.

One-way flights from London to Dulles Intl
Search for one-way flight options from London to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated 20 October 2026.