Cheap Flights From Seattle To Ontario

Select sites to compare prices |
  • Select all
  • Deselect all

Find Flights


Enter your destination to continue
Enter depart date to continue
Enter return date to continue
Select at least 3 sites to continue
Select your depart date
Select your return date
Location services timed out
Enable Location Services Required!
Location services not available at this time
Use current location

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

Carrier Departure Date Return Date Lowest Price
American Nov 5, 2019 Nov 12, 2019 $322
United Nov 5, 2019 Nov 12, 2019 $322
Major Airlines Oct 16, 2019 Oct 24, 2019 $343
Major Airlines Feb 7, 2020 Feb 15, 2020 $343
Major Airlines Oct 14, 2019 Oct 22, 2019 $353
American Sep 13, 2019 Sep 24, 2019 $360
American Sep 10, 2019 Sep 17, 2019 $361

Cheap Last Minute Flights from Seattle to Ontario

Looking for cheap last minute flights or a weekend getaway? We've got you covered with weekend flight deals from Seattle to Ontario. The chart below shows the best last minute deals and cheap flights this weekend we could find.

Thunder Bay 8/22/19 8/27/19 $659
Windsor 8/22/19 8/27/19 $751
London, Ontario 9/6/19 9/8/19 $458
Toronto 9/12/19 9/17/19 $434
Ottawa 9/20/19 9/24/19 $413

Flight Schedule Summaries Last modified: Aug 16, 2019 3:44 -04:00Number of routes searched: 441Number of itineraries searched: 926,049

Seattle to Toronto
Airline Connections Mon Tue Wed Thu Fri Sat Sun
Air Canada -
United -
American CLT
American DFW
American JFK
American LAX
American MIA
Air Canada YVR
AeroMexico MEX
Alaska LAX
British Airways LHR
Major Airlines ATL
Major Airlines BNA
Major Airlines CVG
Major Airlines DTW
Major Airlines JFK
Icelandair KEF
United DEN
United SFO
United EWR
United IAD
WestJet YYC
WestJet YVR
WestJet YYJ

Cheap International Flights to Ontario - ON Last modified: Aug 16, 2019 3:44 -04:00

We are updating our Cookie Policy. FareCompare will use cookies and other tracking technologies to assist with navigation and product selection, analyze your use of our services, assist with our promotional and marketing efforts, and provide deals content from third parties.

Cheap Flights from Seattle to Ontario - from $161 Round trip from SEA to ON