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Due to coronavirus (COVID-19) travel advisories, some destinations may be unavailable for certain dates. Find out more.

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Amazing Air Canada SEA to LHR Flight Deals

The cheapest flights to Heathrow found within the past 7 days were $855 round trip and $635 one way. Prices and availability subject to change. Additional terms may apply.



FAQs about Air Canada Flights from SEA to LHR
Can I catch a flight from Seattle, WA (SEA-Seattle - Tacoma Intl.) to London (LHR-Heathrow) right now?

It's always wise to know about any quarantine requirements and travel advice reports in effect in your destination. Be sure to check out our Covid-19 Travel Advisor for up-to-date information on catching a flight to London (LHR-Heathrow) from Seattle, WA (SEA-Seattle - Tacoma Intl.).

What terminal is Air Canada at Sea-Tac Airport?

As soon as you're issued your boarding pass for your Air Canada flight from Seattle - Tacoma Intl. Airport (SEA) to London Heathrow, check if the terminal details are on it. If not, you might like to get in touch with your carrier. They should be able to let you know exactly where you'll be flying in and out of.

Are there Air Canada non-stop flights from SEA to LHR?

Unfortunately, you can't fly direct from Seattle - Tacoma Intl. Airport (SEA) to Heathrow Airport with Air Canada. Plan to make at least one stopover if you need to travel with this airline on this route.

If I am not able to travel due to COVID-19, can I change my booking to a later date?

For more info about changing your flight to London Heathrow, please visit our Customer Service Portal.

What is the best day to buy a plane ticket?

This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2020. Wednesday and Friday prices are also good, but you may want to prepare your budget if booking on a Sunday, as data shows the end of the week is when prices are generally at their highest.

What are the cheapest days to fly?

Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2020, flights departing on a Monday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.

How far in advance can you book a flight?

Trying to figure out how early you should book your flight? It's possible to start comparing international airfares on Travelocity up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2020 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 2 weeks to 2 months prior to their travel dates.

How can I save money on airline tickets?

We'll let you in on a secret...You can save big on flights if you mix and match your airlines and fare types. In fact, travelers who booked flights on Travelocity in 2020 saved nearly 40% when their return flights consisted of two different airlines or fare types.

*According to flight demand on Travelocity.com from January to December 2020. Savings are subject to change based on departure location, date and destination.

Travelers ❤️ these 🏨 after their flight to London

Hilton Garden Inn London Heathrow Terminal 2 and 3
Hilton Garden Inn London Heathrow Terminal 2 and 3
3.5 out of 5.0 Heathrow T2, Hounslow, England
$125
4.6/5 (27 reviews)

Clean and comfortable

Reviewed on Apr 6, 2021
This hotel features a restaurant, a fitness center, and a bar/lounge. Traveling on business? Take advantage of the 5 conference rooms, as well as the 24-hour ...
Aerotel London Heathrow T2 & T3
Aerotel London Heathrow T2 & T3
3.0 out of 5.0 Arrivals Hall, East Wing Building, Heathrow Airport, Hounslow, England
$85
4.0/5 (2 reviews)

The location is ideal. Directions to the hotel are not clear.

Reviewed on Dec 8, 2019
Free WiFi in public areas is provided and the front desk is staffed around-the-clock.
Sofitel London Heathrow
Sofitel London Heathrow
5.0 out of 5.0 Terminal 5, London Heathrow Airport, West Drayton, England
4.6/5 (14 reviews)

If I had one complaint it was breakfast just needs to be hotter for room service and please make sure the server provides all condiments so not to have to go back and forth, hoping this was an isolated event.

Reviewed on Feb 13, 2020
This smoke-free hotel includes 2 restaurants, an indoor pool, and a health club. Traveling on business? Take advantage of the 45 conference rooms, as well as ...

*Price based on the lowest price found within past 24 hours and based upon one night stay for two adults over the next thirty days. Prices and availability subject to change. Additional terms may apply.