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Cheap Flights From Seattle To Ontario Last modified: Jul 23, 2016 12:37 AM

Cheap flights from Seattle (SEA) to popular destinations in Ontario (ON)

Kitchener - Waterloo
Carrier Departure Date Return Date Lowest Price
American Aug 22, 2016 Aug 31, 2016 $521
United Aug 22, 2016 Aug 31, 2016 $628
WestJet Aug 22, 2016 Aug 31, 2016 $628
American Aug 1, 2016 Aug 3, 2016 $2,337
London
Carrier Departure Date Return Date Lowest Price
Alaska Jan 19, 2017 Jan 30, 2017 $640
WestJet Jan 19, 2017 Jan 30, 2017 $667
American Jan 19, 2017 Jan 30, 2017 $679
Air Canada Sep 9, 2016 Sep 12, 2016 $794
Air Canada Jan 19, 2017 Jan 30, 2017 $852
United Jan 19, 2017 Jan 30, 2017 $856
North Bay
Carrier Departure Date Return Date Lowest Price
Alaska Oct 21, 2016 Oct 24, 2016 $897
United Oct 21, 2016 Oct 24, 2016 $921
Air Canada Oct 21, 2016 Oct 24, 2016 $1,011
Ottawa
Carrier Departure Date Return Date Lowest Price
WestJet Sep 8, 2016 Sep 12, 2016 $435
WestJet Nov 10, 2016 Nov 15, 2016 $435
American Sep 4, 2016 Sep 9, 2016 $438
American Sep 2, 2016 Sep 8, 2016 $438
American Sep 4, 2016 Sep 14, 2016 $438
American Sep 21, 2016 Sep 27, 2016 $438
American Sep 6, 2016 Sep 16, 2016 $438
American Sep 8, 2016 Sep 11, 2016 $438
American Sep 8, 2016 Sep 12, 2016 $438
American Sep 2, 2016 Sep 9, 2016 $438
Sioux Lookout
Carrier Departure Date Return Date Lowest Price
Air Canada Sep 17, 2016 Sep 26, 2016 $1,184
Thunder Bay
Carrier Departure Date Return Date Lowest Price
Air Canada Aug 7, 2016 Aug 12, 2016 $654
United Aug 7, 2016 Aug 12, 2016 $1,794
Toronto
Carrier Departure Date Return Date Lowest Price
United Jan 4, 2017 Jan 18, 2017 $419
United Sep 30, 2016 Oct 3, 2016 $419
United Sep 9, 2016 Sep 16, 2016 $423
United Jan 19, 2017 Jan 26, 2017 $423
United Jan 20, 2017 Jan 27, 2017 $423
United May 13, 2017 May 20, 2017 $423
United May 20, 2017 May 27, 2017 $423

Cheapest Weekend Non-Stop Flights for the Next 30 Days from Seattle to Ontario

If you're ready to take a trip in the next 30 days and want to fly on the weekend, you might be wondering which weekend is the cheapest to fly. The chart below shows up-to-date data regarding weekend flight prices from Seattle to Ontario.

DestinationDepartingReturningPrice
Toronto 8/25/16 8/29/16 $539

Cheap International Flights from Seattle - SEA

FlightsAirlineLowest Price
Seattle to Toronto American, Air Canada, Alaska, JetBlue, Frontier, Sun Country, United, Virgin America, WestJet $419
Seattle to Ottawa American, Air Canada, Alaska, JetBlue, United, WestJet $435
Seattle to London American, Air Canada, Alaska, United, WestJet $794
Seattle to Thunder Bay American, Air Canada, Alaska, JetBlue, United, WestJet $654
Seattle to Kingston American, Air Canada, Alaska, United Check Dates
Seattle to Windsor American, Air Canada, Alaska, JetBlue, United, WestJet Check Dates
Seattle to North Bay American, Air Canada, Alaska, United $897
Seattle to Sudbury American, Air Canada, Alaska, United Check Dates
Seattle to Sault Ste Marie American, Air Canada, Alaska, United Check Dates

Cheap Domestic Flights to Ontario - ON

FlightsAirlineLowest Price
Vancouver to Toronto Pacific Coastal, Air Canada, Air Transat, Sunwing, WestJet $316
Victoria to Toronto Pacific Coastal, Air Canada, WestJet $388
Vancouver to Ottawa Pacific Coastal, Air Canada, Sunwing, WestJet $428
Abbotsford to Toronto Air Canada, WestJet $318
Vancouver to London Pacific Coastal, Air Canada, WestJet $399
Vancouver to Windsor Air Canada, WestJet $405
Comox to Toronto Pacific Coastal, Central Mountain, Air Canada, WestJet $485
Vancouver to Thunder Bay Air Canada, WestJet $313
Nanaimo to Toronto Air Canada, WestJet $536
Victoria to Ottawa Air Canada, WestJet $493
Vancouver to Kingston Air Canada $583
Vancouver to Sudbury Air Canada $617
Abbotsford to Ottawa Air Canada, WestJet $460
Vancouver to Sault Ste Marie Air Canada $685
Victoria to London Air Canada, WestJet $435

Cheap International Flights to Ontario - ON

FlightsAirlineLowest Price
Portland to Toronto American, Air Canada, Alaska, JetBlue, Frontier, United, Virgin America, WestJet $459
Portland to London American, Air Canada, Alaska, United, WestJet $878
Bellingham to Toronto American, Air Canada, Alaska, United $657
Portland to Ottawa American, Air Canada, Alaska, United, WestJet $455
Cheap Flights from Seattle to Ontario - from $419 Round trip from SEA to ON