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Cheap flights from London, Ontario to Seattle from $346

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from London, Ontario to Seattle departing on 1/8. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from London, Ontario to Seattle

Cheap round-trip flights

These are some of the best round-trip flight deals from London, Ontario to Seattle that have been recently found on momondo from popular airlines, departing in the coming months.

Cheap one-way flights

Flying one-way? These are some of the best deals recently discovered on momondo for flights from London, Ontario to Seattle.

Cheap last minute flights

Planning a quick getaway from London, Ontario to Seattle? These are the last-minute flight deals available now.

Cheap direct flights

If you prefer a non-stop journey, check out our latest direct flight deals to Seattle, so you can enjoy a seamless trip without layovers.

Cheap bus & train deals from London, Ontario to Seattle

Find recent round-trip train or bus tickets from London, Ontario to Seattle.

All round-trip flight deals to Seattle

The cheapest plane tickets to Seattle found on KAYAK recently.
5:45 am - 2:30 pmYXU-SEA
11h 45m2 stops
7:05 pm - 9:15 amSEA-YXU
11h 10m2 stops
$346Air Canada
Find Deal
Wed, Jan 8 - Wed, Jan 29
3:25 pm - 9:30 pmYXU-SEA
9h 05m1 stop
7:05 pm - 9:15 amSEA-YXU
11h 10m2 stops
$347Air Canada
Find Deal
Wed, Jan 8 - Mon, Feb 10
3:25 pm - 9:50 amYXU-SEA
21h 25m2 stops
7:05 pm - 9:15 amSEA-YXU
11h 10m2 stops
$377Air Canada
Find Deal
Thu, Jan 9 - Mon, Feb 3
3:25 pm - 9:50 amYXU-SEA
21h 25m2 stops
7:05 pm - 9:15 amSEA-YXU
11h 10m2 stops
$378Air Canada
Find Deal
Thu, Jan 9 - Wed, Feb 12
8:00 pm - 2:21 pmYXU-SEA
21h 21m1 stop
3:15 pm - 7:13 pmSEA-YXU
24h 58m1 stop
$383WestJet
Find Deal
Sun, Jan 12 - Tue, Feb 11
8:00 pm - 2:21 pmYXU-SEA
21h 21m1 stop
3:15 pm - 7:13 pmSEA-YXU
24h 58m1 stop
$395WestJet
Find Deal
Wed, Jan 15 - Wed, Feb 26
3:25 pm - 9:30 pmYXU-SEA
9h 05m1 stop
9:20 am - 9:15 amSEA-YXU
20h 55m3 stops
$406United Airlines
Find Deal
Mon, Jan 6 - Tue, Jan 28
5:45 am - 9:20 pmYXU-SEA
18h 35m3 stops
7:00 am - 8:20 pmSEA-YXU
10h 20m2 stops
$412United Airlines
Find Deal
Thu, Jan 9 - Tue, Feb 11
3:25 pm - 9:30 pmYXU-SEA
9h 05m1 stop
6:05 am - 8:20 pmSEA-YXU
11h 15m1 stop
Tue, Jan 14 - Wed, Feb 12
3:25 pm - 9:30 pmYXU-SEA
9h 05m1 stop
6:05 am - 8:20 pmSEA-YXU
11h 15m1 stop
Wed, Jan 8 - Wed, Jan 22
YXU-SEA
2000 mimulti-stop
Multiple Airlines
Find Deal

WestJet flights from London, Ontario to Seattle

Our best WestJet deals on London, Ontario to Seattle flight tickets
WestJet
Jan 12
YXU8:00 pmLondon
21h 21m
1 stop
SEA2:21 pmSeattle/Tacoma Intl
Feb 11
SEA3:15 pmSeattle/Tacoma Intl
24h 58m
1 stop
YXU7:13 pmLondon
WestJet
Jan 15
YXU8:00 pmLondon
21h 21m
1 stop
SEA2:21 pmSeattle/Tacoma Intl
Feb 26
SEA3:15 pmSeattle/Tacoma Intl
24h 58m
1 stop
YXU7:13 pmLondon
WestJet
Mar 31
YXU8:00 pmLondon
21h 21m
1 stop
SEA2:21 pmSeattle/Tacoma Intl
Apr 29
SEA7:05 amSeattle/Tacoma Intl
9h 04m
1 stop
YXU7:09 pmLondon

United Airlines flights from London, Ontario to Seattle

Our best United Airlines deals on London, Ontario to Seattle flight tickets
United Airlines
Jan 6
YXU3:25 pmLondon
9h 05m
1 stop
SEA9:30 pmSeattle/Tacoma Intl
Jan 28
SEA9:20 amSeattle/Tacoma Intl
20h 55m
3 stops
YXU9:15 amLondon
United Airlines
Jan 9
YXU5:45 amLondon
18h 35m
3 stops
SEA9:20 pmSeattle/Tacoma Intl
Feb 11
SEA7:00 amSeattle/Tacoma Intl
10h 20m
2 stops
YXU8:20 pmLondon
United Airlines
Jan 9
YXU5:45 amLondon
13h 31m
2 stops
SEA4:16 pmSeattle/Tacoma Intl
Jan 20
SEA5:00 amSeattle/Tacoma Intl
12h 20m
2 stops
YXU8:20 pmLondon

See travel insights to Seattle from

How to get the cheapest flight ticket from London, Ontario to Seattle

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly from London, Ontario to Seattle?

August. The cheapest time of year to fly to Seattle from London, Ontario is August. Most expensive is March

What is the cheapest day to depart London, Ontario for Seattle?

Saturday. The cheapest day of the week is typically Saturday. The most expensive is typically Monday

When is the cheapest time to fly from London, Ontario to Seattle?

In the afternoon. London, Ontario to Seattle flights are approximately 31% more expensive in the morning than in the afternoon

What is the cheapest London, Ontario to Seattle flight route?

London - Seattle/Tacoma Intl. Fly from London to Seattle/Tacoma Intl for the best London, Ontario - Seattle flight prices

When to book flights from London, Ontario to Seattle

Are you open to changing your travel dates? Check out the ideal times to fly from London, Ontario to Seattle according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap London, Ontario to Seattle (YXU to SEA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from London, Ontario to Seattle

Best Price Found

$346

Fastest flight time

9h 05m

Direct flights

None

Airports in Seattle

1 airport
The best flight deal from London, Ontario to Seattle found on momondo in the last 72 hours is $346
The fastest flight from London, Ontario to Seattle takes 9h 05m
There are no direct flights from London, Ontario to Seattle. Popular non-direct route for this connection is London Airport - Seattle/Tacoma Intl Airport.
There is 1 airport near Seattle: Seattle/Tacoma Intl (SEA)

  • How far is London to Seattle/Tacoma Intl by plane?

    Seattle/Tacoma Intl is 1997.9 mi away from London. Flights usually cover this in 9h 05m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from London Airport to Seattle/Tacoma Intl Airport?

    Prices for flights from London Airport to Seattle/Tacoma Intl Airport are updated daily.

  • How many operators does momondo search for flights from London Airport to Seattle/Tacoma Intl Airport?

  • How old do you have to be to fly from London Airport to Seattle/Tacoma Intl Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from London Airport to Seattle/Tacoma Intl Airport.

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The necessary travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from London, Ontario to Seattle?


Best airlines flying from London, Ontario to Seattle

Compare and see reviews for airlines that fly from London, Ontario to Seattle with momondo
Airline
Rating
Free Cancellation
Price
Air CanadaPriceFrom $301Free CancellationRating
7.0
8,237 reviews
Search Air Canada flights

Why use momondo?

Why should I use momondo to find a flight deal from London to Seattle?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Seattle from London.

Can I find flights from London to Seattle with flexible booking policies on momondo?

momondo does allow users to show only those flights to Seattle from London which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from London to Seattle?

momondo provides multiple filters to help you find the best flight to Seattle from London. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from London to Seattle right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Seattle, momondo offers a useful price alert feature which will track prices for flights to Seattle from London and alert you when they change.


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