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Cheap Flights from Seattle to Ontario

Did You Know?

There are 44 connecting cities from Seattle, WA to Ontario.
The longest flight from Seattle, WA to Ontario is 2,054 miles.
Toronto, ON is the most popular connecting city from Seattle, WA to Ontario.
The earliest flight from Seattle, WA leaves at 0:15 am.
The most popular destination from Seattle, WA is Portland International.
There are 7 direct flights from Seattle to Ontario.
Toronto, ON has the most direct flights to Ontario.
There are 48 carriers flying into Ontario.

Cheap International Flights from Seattle - SEA

Flights
Airline
Lowest Price
American, US Airways, Delta, United, Alaska, Air Canada
$418
Air Canada, United, Delta, Alaska, American, US Airways
$422
United, Air Canada
$577
Delta, Air Canada, United
$612
Air Canada
$1137
Air Canada
$1141
Air Canada, United
$1148
Air Canada
$1260
Air Canada
$1015
Air Canada
$1259
Cheap Flights from Seattle to Ontario - from $418 Round trip from SEA to ON