IAD - YXU

C$ 623 Find Cheap Flights from Washington, D.C. to London – Compare and Save

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Everything you should know

Cheapest round-trip
C$ 824
Typical prices: C$ 1,155-C$ 3,884
Multiple Airlines
Tue 18/12Thu 20/12
IAD - YXU • 3 stops
Cheapest one-way flights
C$ 623
Typical prices: C$ 549-C$ 549
Multiple Airlines
Mon 1/1
IAD - YXU • 1 stop
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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

Fri, 18 Dec - Sun, 20 Dec
Multiple Airlines Logo
1:55 p.m. - 2:05 p.m.IAD  Washington, D.C. Dulles Intl-YXU London
24h 10m3 stops Tampa Atlanta Hartsfield-Jackson Orlando
Multiple Airlines Logo
6:15 a.m. - 12:51 a.m.YXU  London-IAD Washington, D.C. Dulles Intl
18h 36m2 stops Fort Lauderdale Atlanta Hartsfield-Jackson
C$ 824Multiple Airlines
Fri, 18 Dec - Sun, 20 Dec
Multiple Airlines Logo
8:45 p.m. - 2:05 p.m.IAD  Washington, D.C. Dulles Intl-YXU London
17h 20m2 stops Dallas/Fort Worth Orlando
Multiple Airlines Logo
6:15 a.m. - 12:51 a.m.YXU  London-IAD Washington, D.C. Dulles Intl
18h 36m2 stops Fort Lauderdale Atlanta Hartsfield-Jackson
C$ 862Multiple Airlines
Fri, 18 Dec - Sun, 20 Dec
Multiple Airlines Logo
1:55 p.m. - 2:05 p.m.IAD  Washington, D.C. Dulles Intl-YXU London
24h 10m3 stops Tampa Atlanta Hartsfield-Jackson Orlando
Multiple Airlines Logo
6:15 a.m. - 12:51 a.m.YXU  London-IAD Washington, D.C. Dulles Intl
18h 36m3 stops Fort Lauderdale Philadelphia Atlanta Hartsfield-Jackson
C$ 931Multiple Airlines
Mon, 21 Dec - Mon, 28 Dec
Multiple Airlines Logo
10:28 p.m. - 2:05 p.m.IAD  Washington, D.C. Dulles Intl-YXU London
15h 37m1 stop Orlando
Multiple Airlines Logo
6:15 a.m. - 10:14 p.m.YXU  London-IAD Washington, D.C. Dulles Intl
15h 59m1 stop Fort Lauderdale
C$ 937Multiple Airlines
Mon, 21 Dec - Mon, 28 Dec
Multiple Airlines Logo
10:28 p.m. - 2:05 p.m.IAD  Washington, D.C. Dulles Intl-YXU London
15h 37m1 stop Orlando
Multiple Airlines Logo
6:15 a.m. - 12:51 a.m.YXU  London-IAD Washington, D.C. Dulles Intl
18h 36m2 stops Fort Lauderdale Atlanta Hartsfield-Jackson
C$ 1,096Multiple Airlines
Fri, 18 Dec - Sun, 20 Dec
Multiple Airlines Logo
9:50 p.m. - 2:05 p.m.IAD  Washington, D.C. Dulles Intl-YXU London
16h 15m1 stop Orlando
Multiple Airlines Logo
6:15 a.m. - 12:51 a.m.YXU  London-IAD Washington, D.C. Dulles Intl
18h 36m2 stops Fort Lauderdale Atlanta Hartsfield-Jackson
C$ 1,099Multiple Airlines
Fri, 18 Dec - Fri, 25 Dec
Multiple Airlines Logo
8:45 p.m. - 2:05 p.m.IAD  Washington, D.C. Dulles Intl-YXU London
17h 20m2 stops Dallas/Fort Worth Orlando
Multiple Airlines Logo
6:15 a.m. - 10:14 p.m.YXU  London-IAD Washington, D.C. Dulles Intl
15h 59m1 stop Fort Lauderdale
C$ 1,100Multiple Airlines
Fri, 18 Dec - Fri, 25 Dec
Air Canada Logo
4:30 p.m. - 9:52 p.m.IAD  Washington, D.C. Dulles Intl-YXU London
5h 22m1 stop Toronto Pearson Intl
Air Canada Logo
3:20 p.m. - 8:10 p.m.YXU  London-IAD Washington, D.C. Dulles Intl
4h 50m1 stop Toronto Pearson Intl
C$ 1,123Air Canada
Thu, 21 Jan - Sun, 24 Jan
Air Canada Logo
4:30 p.m. - 9:52 p.m.IAD  Washington, D.C. Dulles Intl-YXU London
5h 22m1 stop Toronto Pearson Intl
Air Canada Logo
3:20 p.m. - 9:28 p.m.YXU  London-IAD Washington, D.C. Dulles Intl
6h 08m1 stop Toronto Pearson Intl
C$ 1,136Air Canada
Thu, 21 Jan - Sun, 24 Jan
Air Canada Logo
4:30 p.m. - 9:52 p.m.IAD  Washington, D.C. Dulles Intl-YXU London
5h 22m1 stop Toronto Pearson Intl
Air Canada Logo
5:30 a.m. - 4:01 p.m.YXU  London-IAD Washington, D.C. Dulles Intl
10h 31m2 stops Toronto Pearson Intl Ottawa
C$ 1,144Air 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 with more confidence.

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

Air Canada (C$ 1,123) 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$ 623
One-way flight 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 answers about this route, including flight times, airports, airlines, and booking tips.

  • 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$ 824 to C$ 2,765. That means the highest observed fare was about 3x higher than the lowest one.

  • How are flight prices from Washington, D.C. Dulles Intl Airport to London looking right now?

    One-way fares from Washington, D.C. Dulles Intl Airport to London are currently higher than usual. Average one-way flight prices are about C$ 725, which is 31% above the typical average for this route.

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

    London Airport (YXU) hosts 5 major car rental companies, with daily rates averaging C$ 87 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.

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

    Yes. Flexible dates can save you up to 71% on flights from Washington, D.C. Dulles Intl Airport to London. Wednesday is the cheapest departure day at C$ 1,156 round-trip on average, while Monday is the most expensive at C$ 3,885, a difference of C$ 2,729.

    KAYAK's flexible dates feature shows options up to three 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 and avoid flying on Monday. On this route, Wednesday flights average C$ 1,156, about C$ 2,729 less than Monday fares (70% 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

Complete your trip to London with a hotel stay or car rental

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