Find flights
When to book
FAQs

Cheap flights from Washington, D.C. Dulles Intl Airport to London, ON from C$ 283

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 16/10. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — YXU
11 Oct — 18 Oct1
1 adult
1 adult, Economy

Cheap flight deals from Dulles Intl to London

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to London (YXU). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 11 September 2025.

Round-trip from

C$ 779

One-way from

C$ 283
Air Canada
  • Air Canada
  • 19/10-22/10
  • 2 total stops
  • 8h 25m total
  • Washington, D.C. to London
Search Deals
16/10
  • 16/10
  • 2 total stops
  • 40h 05m total
  • Washington, D.C. to London
Search Deals

Find flight deals from Dulles Intl to London

Cheapest flights from Dulles Intl to London
Explore the most affordable flight options available from Dulles Intl to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 September 2025.

Fri 24/1010:20 a.m.IAD - YXU
1 stop4h 42mAir Canada
Fri 31/109:25 a.m.YXU - IAD
1 stop11h 04mAir Canada
Deal found 9/9C$ 715
Tue 25/114:25 p.m.IAD - YXU
1 stop4h 56mAir Canada
Fri 28/119:25 a.m.YXU - IAD
1 stop6h 26mAir Canada
Deal found 8/9C$ 716
Sun 19/1010:20 a.m.IAD - YXU
1 stop4h 42mAir Canada
Wed 22/109:55 a.m.YXU - IAD
1 stop3h 43mAir Canada
Deal found 11/9C$ 779
Fri 24/1010:20 a.m.IAD - YXU
1 stop4h 42mUnited Airlines
Fri 31/109:25 a.m.YXU - IAD
2 stops11h 32mUnited Airlines
Deal found 9/9C$ 867
Tue 23/99:15 a.m.IAD - YXU
2 stops19h 57mMultiple Airlines
Fri 26/96:00 a.m.YXU - IAD
1 stop11h 50mMultiple Airlines
Deal found 9/9C$ 874
Sat 27/910:20 a.m.IAD - YXU
1 stop4h 57mAir Canada
Sat 4/106:15 a.m.YXU - IAD
1 stop7h 23mAir Canada
Deal found 9/9C$ 890

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to London 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, Cheapflights users made 629,999 searches. Data last updated 11 September 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to London that are best for you.

Fly from

Dulles Intl

Fly to

London

Route

Depart

Return

Price

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Sun 19/10

10:20 a.m.-3:02 p.m.

1 stop4h 42m

London

Wed 22/10

9:55 a.m.-1:38 p.m.

1 stop3h 43m

C$ 779

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Sun 26/10

4:30 p.m.-9:21 p.m.

1 stop4h 51m

London

Sun 2/11

9:25 a.m.-8:26 p.m.

1 stop11h 01m

C$ 811

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Wed 10/12

4:30 p.m.-9:21 p.m.

1 stop4h 51m

London

Fri 12/12

9:25 a.m.-8:26 p.m.

1 stop11h 01m

C$ 811

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Wed 10/12

4:30 p.m.-9:21 p.m.

1 stop4h 51m

London

Fri 12/12

5:45 a.m.-4:21 p.m.

2 stops10h 36m

C$ 905

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Sun 19/10

6:30 a.m.-3:02 p.m.

2 stops8h 32m

London

Wed 22/10

3:40 p.m.-10:28 p.m.

2 stops6h 48m

C$ 1,093

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Wed 24/9

10:20 a.m.-3:17 p.m.

1 stop4h 57m

London

Sat 27/9

6:10 a.m.-1:38 p.m.

1 stop7h 28m

C$ 1,134

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Wed 24/9

6:35 a.m.-9:29 p.m.

2 stops14h 54m

London

Sat 27/9

3:50 p.m.-9:25 p.m.

1 stop5h 35m

C$ 1,232

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Fri 10/10

6:45 p.m.-5:12 a.m.

1 stop10h 27m

London

Fri 17/10

6:00 a.m.-5:50 p.m.

1 stop11h 50m

C$ 1,321

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Thu 16/10

1:07 p.m.-5:12 a.m.

2 stops40h 05m

C$ 283

Washington, D.C.London

IAD - YXU

IADYXU

Washington, D.C. Dulles Intl

Thu 16/10

10:20 a.m.-3:02 p.m.

1 stop4h 42m

C$ 362

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/9

Best time to book a flight from Dulles Intl to London

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

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Dulles Intl Airport to London

What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to London, Ontario?

Currently, October is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to London, Ontario (average of C$ 243). Flying from Washington, D.C. Dulles Intl Airport to London, Ontario in December is currently the most expensive (average of C$ 478). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from Dulles Intl to London. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

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

    For a flight from Washington, D.C. Dulles Intl to London, you will be flying into London. London (YXU) is just 8.6 km from the centre of the city. London is the only London airport and it handles 0 inbound flights from Washington, D.C. Dulles Intl per day. 0 airlines have flights to London from Washington, D.C. Dulles Intl on a regular basis.

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

    A quick flight from Washington, D.C. Dulles Intl Airport to London, Ontario can take about 4h 42m. Air Canada provides one of the quickest options available for as low as C$ 779. Airlines will cover a distance of 549 km.

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

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

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

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

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

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

  • What is the cheapest month to book a flight from Washington, D.C. Dulles Intl Airport to London, Ontario?

    Currently, October is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to London, Ontario (average of C$ 243). Flying from Washington, D.C. Dulles Intl Airport to London, Ontario in December is currently the most expensive (average of C$ 478). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near London?

Book flights to London if you plan to visit one of these locations
Grand Bend
Port Stanley

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travelers can enjoy low prices and a wide availability of flights to their desired destinations.

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

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Dulles Intl to London. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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

Cheapflights helps you find that perfect flight to London from Dulles Intl 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 Dulles Intl to London with no change fees?

Certainly. Search results for flights to London from Dulles Intl shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Not ready to book yet? You can track prices for flights from Dulles Intl to London on Cheapflights with our Price Alert feature and get notified when better prices are available.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.