SEA

C$ 211 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 6/6. 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

KAYAK searches hundreds of travel sites at once for deals on flights to Seattle

Travellers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 21% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Free to useThere are no hidden charges or fees.

Filter your dealsChoose cabin class, free Wi-Fi and more.

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

Thu, 16 Jul - Sat, 1 Aug
WestJet Logo
12:00 p.m. - 6:45 p.m.
YYZ
-
SEA
9h 45m
2 stops
WestJet Logo
7:35 p.m. - 6:55 a.m.
SEA
-
YYZ
8h 20m
1 stop
C$ 308WestJet
Fri, 21 Aug - Mon, 24 Aug
WestJet Logo
1:30 p.m. - 6:45 p.m.
YYZ
-
SEA
8h 15m
1 stop
WestJet Logo
7:35 p.m. - 6:55 a.m.
SEA
-
YYZ
8h 20m
1 stop
C$ 309WestJet
Tue, 25 Aug - Tue, 1 Sep
WestJet Logo
3:50 p.m. - 9:00 p.m.
YYZ
-
SEA
8h 10m
1 stop
WestJet Logo
7:00 a.m. - 5:10 p.m.
SEA
-
YYZ
7h 10m
1 stop
C$ 311WestJet
Wed, 19 Aug - Sun, 30 Aug
WestJet Logo
3:50 p.m. - 9:00 p.m.
YYZ
-
SEA
8h 10m
1 stop
WestJet Logo
10:30 a.m. - 10:45 p.m.
SEA
-
YYZ
9h 15m
1 stop
C$ 312WestJet
Thu, 28 May - Sat, 6 Jun
Air Canada Logo
6:55 p.m. - 10:05 a.m.
YTZ
-
SEA
18h 10m
2 stops
Air Canada Logo
7:20 p.m. - 7:47 a.m.
SEA
-
YTZ
9h 27m
2 stops
C$ 420Air Canada
Sun, 7 Jun - Sat, 13 Jun
Air Canada Logo
8:55 p.m. - 10:05 a.m.
YTZ
-
SEA
16h 10m
2 stops
Air Canada Logo
7:20 p.m. - 7:47 a.m.
SEA
-
YTZ
9h 27m
2 stops
C$ 433Air Canada
Sat, 6 Jun - Mon, 8 Jun
United Airlines Logo
7:20 p.m. - 8:00 a.m.
YTZ
-
SEA
15h 40m
2 stops
United Airlines Logo
11:52 p.m. - 4:41 p.m.
SEA
-
YTZ
13h 49m
1 stop
C$ 484United Airlines
Wed, 3 Jun - Mon, 8 Jun
United Airlines Logo
2:55 p.m. - 8:46 p.m.
YTZ
-
SEA
8h 51m
1 stop
United Airlines Logo
10:40 p.m. - 10:06 a.m.
SEA
-
YTZ
8h 26m
1 stop
C$ 487United Airlines
Wed, 19 Aug - Tue, 25 Aug
Multiple Airlines Logo
10:40 a.m. - 10:49 p.m.
YAM
-
SEA
15h 09m
2 stops
Multiple Airlines Logo
7:00 a.m. - 5:25 p.m.
SEA
-
YAM
7h 25m
1 stop
C$ 1,108Multiple Airlines
Wed, 19 Aug - Tue, 25 Aug
Multiple Airlines Logo
10:40 a.m. - 10:49 p.m.
YAM
-
SEA
15h 09m
2 stops
Multiple Airlines Logo
7:00 a.m. - 5:25 p.m.
SEA
-
YAM
7h 25m
1 stop
C$ 1,179Multiple Airlines
Useful Info

Good to know

Low seasonJanuary
Cheapest flightC$ 213
Best time to beat the crowds (10% less expensive on average)
Most popular time to fly and prices are also 1% lower 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
Centralia
Marysville
Redmond
Tukwila
Renton
Bothell
Kent
Olympia
Kirkland
Ashford
Ellensburg
Ocean Shores
Puyallup
Federal Way
Issaquah
Westport
Lacey

Everything you need to know for your flight to Seattle

Information on the airport you'll fly into in Seattle

Seattle (SEA)