SEA

C$ 177 Find Cheap Flights from Ontario to Seattle

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to Seattle departing on 9/3. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
C$ 283
Overall average: C$ 395
Alaska Airlines
Sat 7/3Sat 14/3
YYZ - SEA • Direct
Cheapest one-way flights
C$ 177
Typical prices: C$ 204-C$ 371
WestJet
Mon 9/3
YYZ - SEA • 1 stop
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Flight Deals
Useful Info
Flight Deals

Cheap Flights from Ontario to Seattle

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Ontario to Seattle that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Ontario to Seattle

Sat, 7 Mar - Sat, 14 Mar
Alaska Airlines Logo
4:45 p.m. - 7:18 p.m.
YYZ
-
SEA
5h 33mdirect
Alaska Airlines Logo
7:55 a.m. - 3:35 p.m.
SEA
-
YYZ
4h 40mdirect
C$ 283Alaska Airlines
Sat, 28 Feb - Sat, 7 Mar
Alaska Airlines Logo
4:45 p.m. - 7:18 p.m.
YYZ
-
SEA
5h 33mdirect
Alaska Airlines Logo
7:55 a.m. - 3:35 p.m.
SEA
-
YYZ
4h 40mdirect
C$ 289Alaska Airlines
Tue, 10 Mar - Tue, 17 Mar
Air Canada Logo
4:40 p.m. - 10:57 p.m.
YYZ
-
SEA
9h 17m
1 stop
Air Canada Logo
8:00 a.m. - 3:43 p.m.
SEA
-
YYZ
4h 43mdirect
C$ 295Air Canada
Wed, 25 Feb - Wed, 4 Mar
Alaska Airlines Logo
4:45 p.m. - 7:18 p.m.
YYZ
-
SEA
5h 33mdirect
Alaska Airlines Logo
7:55 a.m. - 3:35 p.m.
SEA
-
YYZ
4h 40mdirect
C$ 299Alaska Airlines
Fri, 20 Feb - Sat, 21 Feb
Alaska Airlines Logo
4:45 p.m. - 7:18 p.m.
YYZ
-
SEA
5h 33mdirect
Alaska Airlines Logo
7:55 a.m. - 3:35 p.m.
SEA
-
YYZ
4h 40mdirect
C$ 300Alaska Airlines
Thu, 5 Mar - Wed, 11 Mar
WestJet Logo
7:45 a.m. - 2:19 p.m.
YYZ
-
SEA
9h 34m
1 stop
WestJet Logo
3:10 p.m. - 5:58 a.m.
SEA
-
YYZ
11h 48m
2 stops
C$ 304WestJet
Tue, 3 Mar - Fri, 6 Mar
Air Canada Logo
4:40 p.m. - 10:57 p.m.
YYZ
-
SEA
9h 17m
1 stop
Air Canada Logo
8:00 a.m. - 3:43 p.m.
SEA
-
YYZ
4h 43mdirect
C$ 306Air Canada
Thu, 4 Jun - Mon, 8 Jun
WestJet Logo
12:00 p.m. - 6:45 p.m.
YYZ
-
SEA
9h 45m
2 stops
WestJet Logo
7:35 p.m. - 5:45 a.m.
SEA
-
YYZ
7h 10m
1 stop
C$ 307WestJet
Thu, 5 Mar - Wed, 11 Mar
Multiple Airlines Logo
7:05 a.m. - 2:19 p.m.
YKF
-
SEA
10h 14m
1 stop
Multiple Airlines Logo
3:10 p.m. - 5:29 a.m.
SEA
-
YKF
11h 19m
1 stop
C$ 489Multiple Airlines
Wed, 25 Feb - Wed, 4 Mar
Multiple Airlines Logo
9:20 a.m. - 6:40 p.m.
YTZ
-
SEA
12h 20m
1 stop
Multiple Airlines Logo
11:08 p.m. - 4:43 p.m.
SEA
-
YTZ
14h 35m
2 stops
C$ 495Multiple Airlines
Useful Info

Good to know

Low seasonJanuary
Cheapest flightC$ 177
Best time to beat the crowds but there is an average 3% increase in price.
Most popular time to fly (3% more expensive on average)
Flight from Toronto Pearson Airport to Seattle

FAQs for booking flights from Ontario to Seattle

  • How does KAYAK find such low prices on flights from Ontario to Seattle?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Ontario to Seattle.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Ontario to Seattle?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Ontario is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Ontario to Seattle?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Seattle with an airline and back to Ontario with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Ontario to Seattle?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seattle from Ontario up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Travelling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
SeaTac
Lynnwood
Tacoma
Marysville
Centralia
Tukwila
Redmond
Kent
Renton
Bothell
Kirkland
Olympia
Federal Way
Ellensburg
Ocean Shores
Puyallup
Ashford
Issaquah
Fife
Monroe

Everything you need to know for your flight to Seattle

Information on the airport you'll fly into in Seattle

Seattle (SEA)