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Cheap flights from Seattle to London, Ontario from $227

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to London, Ontario departing on 3/7. 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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0 bags

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Find the cheapest flights from Seattle to London

Cheap round-trip flights

These are some of the best round-trip flight deals from Seattle to London 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 Seattle to London.

Cheap last minute flights

Planning a quick getaway from Seattle to London? 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 London, so you can enjoy a seamless trip without layovers.

Cheap bus & train deals from Seattle to London

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

All round-trip flight deals from Seattle to London

The cheapest plane tickets from Seattle to London found on KAYAK recently.
5:38 pm - 7:13 pmSEA-YXU
22h 35m2 stops
8:00 pm - 2:21 pmYXU-SEA
21h 21m1 stop
mar., mar. 4 - mar., mar. 11
5:38 pm - 7:13 pmSEA-YXU
22h 35m2 stops
8:00 pm - 2:21 pmYXU-SEA
21h 21m1 stop
mar., mar. 4 - mar., mar. 11
3:39 pm - 5:14 amSEA-YXU
10h 35m2 stops
6:00 am - 2:09 pmYXU-SEA
11h 09m2 stops
$462WestJet
Find Deal
sáb., may. 31 - sáb., jun. 7
3:39 pm - 5:14 amSEA-YXU
10h 35m2 stops
6:00 am - 2:09 pmYXU-SEA
11h 09m2 stops
$472WestJet
Find Deal
sáb., may. 31 - sáb., jun. 7
3:39 pm - 5:14 amSEA-YXU
10h 35m2 stops
8:00 pm - 1:08 pmYXU-SEA
20h 08m1 stop
$476WestJet
Find Deal
sáb., may. 31 - sáb., jun. 7
3:39 pm - 5:14 amSEA-YXU
10h 35m2 stops
8:00 pm - 1:08 pmYXU-SEA
20h 08m1 stop
$480WestJet
Find Deal
sáb., may. 31 - sáb., jun. 7
5:45 am - 8:20 pmSEA-YXU
11h 35m2 stops
3:20 pm - 9:35 pmYXU-SEA
9h 15m1 stop
$509Air Canada
Find Deal
sáb., mar. 8 - sáb., mar. 15
7:05 pm - 9:15 amSEA-YXU
11h 10m2 stops
3:20 pm - 9:30 pmYXU-SEA
9h 10m1 stop
$515Air Canada
Find Deal
vie., mar. 7 - vie., mar. 14
5:00 am - 8:20 pmSEA-YXU
12h 20m2 stops
3:25 pm - 9:30 pmYXU-SEA
9h 05m1 stop
$561United Airlines
Find Deal
vie., mar. 7 - vie., mar. 14
9:20 am - 9:15 amSEA-YXU
20h 55m3 stops
3:25 pm - 9:30 pmYXU-SEA
9h 05m1 stop
$570United Airlines
Find Deal
mié., mar. 5 - mié., mar. 12
8:39 pm - 6:13 pmSEA-YXU
42h 34m2 stops
vie., mar. 7
5:00 am - 8:20 pmSEA-YXU
12h 20m2 stops
$264United Airlines
Find Deal
vie., mar. 7
3:01 pm - 2:50 pmSEA-YXU
20h 49m3 stops
$273United Airlines
Find Deal
vie., mar. 7
6:05 am - 8:20 pmSEA-YXU
11h 15m1 stop
$281United Airlines
Find Deal
vie., mar. 7
8:10 am - 1:50 pmSEA-YXU
26h 40m3 stops
$539United Airlines
Find Deal
sáb., mar. 8
3:15 pm - 6:13 pmSEA-YXU
23h 58m1 stop
$749WestJet
Find Deal
sáb., mar. 8

Air Canada flights from Seattle to London, Ontario

Our best Air Canada deals on Seattle to London, Ontario flight tickets
Air Canada
Mar 8
SEA5:45 amSeattle/Tacoma Intl
11h 35m
2 stops
YXU8:20 pmLondon
Mar 15
YXU3:20 pmLondon
9h 15m
1 stop
SEA9:35 pmSeattle/Tacoma Intl
Air Canada
Mar 7
SEA7:05 pmSeattle/Tacoma Intl
11h 10m
2 stops
YXU9:15 amLondon
Mar 14
YXU3:20 pmLondon
9h 10m
1 stop
SEA9:30 pmSeattle/Tacoma Intl
Air Canada
Mar 7
SEA7:05 pmSeattle/Tacoma Intl
11h 10m
2 stops
YXU9:15 amLondon
Mar 14
YXU3:20 pmLondon
9h 40m
2 stops
SEA10:00 pmSeattle/Tacoma Intl

WestJet flights from Seattle to London, Ontario

Our best WestJet deals on Seattle to London, Ontario flight tickets
WestJet
May 31
SEA3:39 pmSeattle/Tacoma Intl
10h 35m
2 stops
YXU5:14 amLondon
Jun 7
YXU6:00 amLondon
11h 09m
2 stops
SEA2:09 pmSeattle/Tacoma Intl
WestJet
May 31
SEA3:39 pmSeattle/Tacoma Intl
10h 35m
2 stops
YXU5:14 amLondon
Jun 7
YXU6:00 amLondon
11h 09m
2 stops
SEA2:09 pmSeattle/Tacoma Intl
WestJet
May 31
SEA3:39 pmSeattle/Tacoma Intl
10h 35m
2 stops
YXU5:14 amLondon
Jun 7
YXU8:00 pmLondon
20h 08m
1 stop
SEA1:08 pmSeattle/Tacoma Intl

See travel insights to London from

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

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 day to depart on your flight to London, Ontario?

According to our data, Thursday is the cheapest day to fly to London, Ontario from Seattle. The lowest ticket price found for a Thursday departure recently was $244. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Be sure to avoid booking your departure on a Tuesday as prices are generally higher than usual. According to our data, the average ticket price to London, Ontario on Tuesday is $680.

What is the cheapest time of day to depart on your flight to London, Ontario?

In the evening is the cheapest time of day to fly from Seattle to London, Ontario when you can find flight prices for as low as $385. Flying to London, Ontario in the evening is an ideal time because this is during off-peak travel hours. In the morning is when there is more demand to fly to London, Ontario, so prices are often more expensive at around $495 per ticket.

When to book flights from Seattle to London, Ontario

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

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

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

Best Price Found

$227

Fastest flight time

10h 28m

Direct flights

None

Airports in London, Ontario

1 airport
The best one-way flight to London, Ontario from Seattle in the past 72 hours is $227. The best round-trip flight deal from Seattle to London, Ontario found on momondo in the last 72 hours is $433.
The fastest flight from Seattle to London, Ontario takes 10h 28m
There are no direct flights from Seattle to London, Ontario. Popular non-direct route for this connection is Seattle/Tacoma Intl Airport - London Airport.
There is 1 airport near London, Ontario: London (YXU)

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

    The straight-line distance from Seattle/Tacoma Intl to London is 1997.9 mi. By plane, this route typically takes 10h 28m.

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

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

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport to London Airport.

  • What documentation or ID do you need to fly to London Airport?

    The travel and health documents you'll need for your trip to London Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at London Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

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


Best airlines flying from Seattle to London, Ontario

Compare and see reviews for airlines that fly from Seattle to London, Ontario with momondo
Airline
Rating
Free Cancellation
Price
Air CanadaPriceFrom $205Free CancellationRating
7.0
8,635 reviews
Search Air Canada flights

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Grand Bend
Port Stanley

Why use momondo?

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

Finding the right flight to London from Seattle is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to London quick and easy, saving you time and money.

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

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

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Seattle to London.

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

Yes. momondo can track prices for Seattle to London flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.


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