$981 Cheap Air Canada flights London (LHR) to Washington (IAD)

View $981 flight on Tue, Dec 30, 2025Opens in a new window

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$981 Cheap Air Canada flights London (LHR) to Washington (IAD)

Prices were available within the past 7 days and start at $981 for one-way flights and $525 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Air Canada
Mon, Aug 25 - Wed, Sep 10
LHR
London
IAD
Washington
$525 Roundtrip, found 3 hours ago
$525
Roundtrip
found 3 hours ago
Select Air Canada flight, departing Mon, Aug 25 from London to Washington, returning Wed, Sep 10, priced at $525 found 3 hours ago
Air Canada
Tue, Nov 4 - Sat, Nov 15
LHR
London
IAD
Washington
$657 Roundtrip, just found
$657
Roundtrip
just found
Select Air Canada flight, departing Tue, Nov 4 from London to Washington, returning Sat, Nov 15, priced at $657 just found
Flights from London (LHR) to Washington (IAD)
Origin airport
Heathrow
Destination airport
Washington Dulles Intl.
Airlines serving
Aer Lingus, Air Canada, Air France, American Airlines, Austrian Airlines, British Airways, Brussels Airlines, Delta, Finnair, Iberia, Icelandair, KLM, Lufthansa, Royal Air Maroc, Scandinavian Airlines, Swiss International Air Lines, TAP Portugal, Turkish Airlines, United, Virgin Atlantic
Popular airline
British Airways
Distance
3666 mi
Average flight time
3 hours 15 mins

Frequently asked questions

How much is an Air Canada flight from Heathrow Airport (LHR) to Washington Dulles Intl. Airport (IAD)?
Finding cheap one-way Air Canada flights from LHR to IAD from $981 on Expedia couldn't be simpler — just filter by "Price (lowest to highest)." Or check out our affordable return fares from $525 for your next exciting vacation.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from LHR to IAD with Air Canada?
January is one of the least expensive months to jet off to Washington with Air Canada. You could also find great prices on return and one-way fares in February.
What is the cheapest time to book flights from Heathrow Airport (LHR) to Washington Dulles Intl. Airport (IAD) with Air Canada?
Check for Air Canada flights from LHR to IAD about one month before you want to leave. The most affordable time to book an international flight is generally 18 to 29 days ahead of your travel date when you can save 17% versus booking four to five months in advance. Regardless of fare class and itinerary, the best day of the week to book international airfare is usually Sunday. Friday is often the most expensive. Passengers who book on a Sunday can save an average of 17% compared to those who book on a Friday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does Air Canada fly nonstop from Heathrow Airport (LHR) to Washington Dulles Intl. Airport (IAD)?
Click on our "Nonstop" filter when searching for direct Air Canada flights from LHR to IAD. It's also an easy way to compare other airlines offering the same direct route.
What is the earliest Air Canada flight from LHR to IAD?
To find the earliest departures from LHR to IAD with Air Canada, sort your results by "Early Morning" and "Morning." Booking an early flight generally means you're less likely to experience cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does Air Canada fly into in Washington?
Washington Dulles Intl. Airport (IAD) is the primary Washington gateway for Air Canada flights from Heathrow Airport (LHR).
Why fly with Air Canada from LHR to IAD?
Air Canada makes traveling from LHR to IAD more comfortable with a 4-star airline rating and an excellent in-flight experience. You could even start collecting points with Air Canada Aeroplan. Remember to join our free One Key™ rewards program to earn OneKeyCash™*, which can be redeemed on future trips.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
Can I change or cancel my Air Canada flight from Heathrow Airport (LHR) to Washington Dulles Intl. Airport (IAD)?
Changes are often free within 24 hours of making your booking, but your airline may charge you after that time. For more information about altering your flights, head to your "Trips," select your flight and click on "Manage Booking." If you want the flexibility to update your itinerary without extra charges, apply the "Changes included" or "No cancel fee" filter when organizing your next break.

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