IAD - YXU

C$ 1,076 Find Cheap Flights from Washington, D.C. to London – Compare and Save

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1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
C$ 1,076
Typical prices: C$ 1,149-C$ 1,553
Multiple Airlines
Fri 2/11Fri 9/11
IAD - YXU • 3 stops
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Flight Deals

Cheap Flights from Washington, D.C. to London (IAD-YXU)

 
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Washington, D.C. to London

Mon, 2 Nov - Mon, 9 Nov
Multiple Airlines Logo
9:06 p.m. - 5:35 a.m.IAD  Washington, D.C. Dulles Intl-YXU London
32h 29m3 stops Atlanta Hartsfield-Jackson Las Vegas Harry Reid Intl Calgary
Multiple Airlines Logo
6:40 a.m. - 11:36 a.m.YXU  London-IAD Washington, D.C. Dulles Intl
28h 56m3 stops Calgary San Francisco Dallas/Fort Worth
C$ 1,076Multiple Airlines
Mon, 2 Nov - Mon, 9 Nov
Multiple Airlines Logo
9:55 a.m. - 2:47 p.m.IAD  Washington, D.C. Dulles Intl-YXU London
4h 52m1 stop Toronto Pearson Intl
Multiple Airlines Logo
3:25 p.m. - 9:26 p.m.YXU  London-IAD Washington, D.C. Dulles Intl
6h 01m1 stop Toronto Pearson Intl
C$ 1,174Multiple Airlines
Mon, 2 Nov - Mon, 9 Nov
Multiple Airlines Logo
9:55 a.m. - 7:52 p.m.IAD  Washington, D.C. Dulles Intl-YXU London
9h 57m2 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl
Multiple Airlines Logo
3:25 p.m. - 9:26 p.m.YXU  London-IAD Washington, D.C. Dulles Intl
6h 01m1 stop Toronto Pearson Intl
C$ 1,187Multiple Airlines
Tue, 6 Oct - Sat, 10 Oct
Air Canada Logo
9:55 a.m. - 2:50 p.m.IAD  Washington, D.C. Dulles Intl-YXU London
4h 55m1 stop Toronto Pearson Intl
Air Canada Logo
3:30 p.m. - 8:25 p.m.YXU  London-IAD Washington, D.C. Dulles Intl
4h 55m1 stop Toronto Pearson Intl
C$ 1,202Air Canada
Mon, 2 Nov - Mon, 9 Nov
Multiple Airlines Logo
7:40 a.m. - 5:35 a.m.IAD  Washington, D.C. Dulles Intl-YXU London
21h 55m2 stops Atlanta Hartsfield-Jackson Calgary
Multiple Airlines Logo
6:40 a.m. - 11:36 a.m.YXU  London-IAD Washington, D.C. Dulles Intl
28h 56m3 stops Calgary San Francisco Dallas/Fort Worth
C$ 1,210Multiple Airlines
Tue, 6 Oct - Sat, 10 Oct
Air Canada Logo
9:45 a.m. - 5:43 p.m.IAD  Washington, D.C. Dulles Intl-YXU London
7h 58m2 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl
Air Canada Logo
3:30 p.m. - 8:25 p.m.YXU  London-IAD Washington, D.C. Dulles Intl
4h 55m1 stop Toronto Pearson Intl
C$ 1,214Air Canada
Sat, 20 Mar - Sat, 27 Mar
Air Canada Logo
4:30 p.m. - 9:49 p.m.IAD  Washington, D.C. Dulles Intl-YXU London
5h 19m1 stop Toronto Pearson Intl
Air Canada Logo
3:20 p.m. - 8:08 p.m.YXU  London-IAD Washington, D.C. Dulles Intl
4h 48m1 stop Toronto Pearson Intl
C$ 1,224Air Canada
Tue, 6 Oct - Sat, 10 Oct
Air Canada Logo
9:45 a.m. - 5:43 p.m.IAD  Washington, D.C. Dulles Intl-YXU London
7h 58m2 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl
Air Canada Logo
9:05 a.m. - 7:00 p.m.YXU  London-IAD Washington, D.C. Dulles Intl
9h 55m2 stops Toronto Pearson Intl Montreal Pierre Elliott Trudeau Intl
C$ 1,226Air Canada
Tue, 6 Oct - Sat, 10 Oct
Air Canada Logo
9:55 a.m. - 2:50 p.m.IAD  Washington, D.C. Dulles Intl-YXU London
4h 55m1 stop Toronto Pearson Intl
Air Canada Logo
9:05 a.m. - 8:25 p.m.YXU  London-IAD Washington, D.C. Dulles Intl
11h 20m1 stop Toronto Pearson Intl
C$ 1,236Air Canada
Tue, 6 Oct - Sat, 10 Oct
Air Canada Logo
9:45 a.m. - 5:43 p.m.IAD  Washington, D.C. Dulles Intl-YXU London
7h 58m2 stops Montreal Pierre Elliott Trudeau Intl Toronto Pearson Intl
Air Canada Logo
9:05 a.m. - 8:25 p.m.YXU  London-IAD Washington, D.C. Dulles Intl
11h 20m1 stop Toronto Pearson Intl
C$ 1,247Air Canada
Booking Insights

Price, demand, and travel trends for Washington, D.C. Dulles Intl Airport to London flights

Use KAYAK data on prices, travel dates, airlines, and seasonal trends to compare options and book flights from Washington, D.C. Dulles Intl Airport to London with more confidence.

What is the cheapest airline to fly from Washington, D.C. Dulles Intl Airport to London?

Air Canada (C$ 1,202) offered the cheapest round-trip ticket from Washington, D.C. Dulles Intl Airport to London in the last 5 days.

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Key details for Washington, D.C. Dulles Intl Airport to London flights

Cheapest flight

C$ 1,076
Flights from Washington, D.C. Dulles Intl Airport to London

When to book flights from Washington, D.C. to London

Are your dates flexible? Find out the best times to travel from Washington, D.C. to London based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price

Your Washington, D.C. Dulles Intl Airport to London flight questions, answered

Find helpful route details based on KAYAK data, including flight times, airports, airlines, and booking questions.

  • Do I need a passport to fly from Washington, D.C. Dulles Intl Airport to London?

    Yes, a valid passport is required for this international route. Many destinations require at least six months of validity beyond your travel dates. Check your passport expiry well before booking.

  • Have flight prices from Washington, D.C. Dulles Intl Airport to London changed much recently?

    Yes. Based on fares seen in the past 5 days, round-trip prices on this route showed a wide range, from about C$ 1,076 to C$ 3,168. That means the highest observed fare was about 3x higher than the lowest one.

  • What car rental options are available at London Airport (YXU)?

    London Airport (YXU) hosts 5 major car rental companies, with daily rates starting from around C$ 40 for economy cars. Top options include:
    • Alamo
    • Enterprise Rent-A-Car
    • Budget
    • National
    • Avis

  • Which airports can I use when flying from Washington, D.C. Dulles Intl Airport to London?

    Flights from Washington, D.C. Dulles Intl Airport to London usually depart from Washington, D.C. Dulles Intl (IAD) and arrive at London (YXU).

  • Which airports do connecting flights from Washington, D.C. Dulles Intl Airport to London pass through?

    Most connecting flights from Washington, D.C. Dulles Intl Airport to London pass through Toronto Pearson Intl (YYZ), which handles 100% of one-stop traffic on this route. Other layover airports each see under 5%.

  • Can I save money by using flexible dates for flights from Washington, D.C. Dulles Intl Airport to London?

    Yes. Being flexible with your travel dates can save you up to 26% on the Washington, D.C. Dulles Intl Airport to London route. Wednesday is the cheapest departure day at C$ 1,149 round-trip on average, while Friday is the most expensive at C$ 1,552, a difference of C$ 403. KAYAK's flexible dates feature shows options up to 3 days before and after your selected dates, making it easier to compare nearby fares.

Your guide to booking Washington, D.C. Dulles Intl Airport to London flights

Get tips on when to book, when to fly, and what to know before your trip.
  • If your dates are flexible, aim for a Wednesday departure instead of Friday. On this route, Wednesday flights average C$ 1,149 – about C$ 403 less than Friday (26% savings) based on the last 12 months.
  • If you're arriving late at night and need somewhere to stay, check out these hotels close to London Airport.
    - Best Western London Airport Inn & Suites
    - London residency inn

More options for your flight from Washington, D.C. to London

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