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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

Cheap Flights from Seattle to Ontario - Airfare Search for tickets from SEA to ON