Best airfares from Seattle to Ontario
Jetradar compares airfares from Seattle to Ontario with hundreds of airlines (including Air Canada, Alaska Airlines, United Airlines) and dozens of online travel agencies in one single place. We provide you with all the options to find the cheapest flights to Ontario, you choose where to book. Also there you can find airlines special offers from Seattle to Ontario. The cheapest round-trip price found within the last week was ILS91. The cheapest oneway price found within the last week was ILS50.Cheapest Flights from Seattle, WA to Ontario, CA
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Airline One Way One Way / Round-Trip Round-Trip 
Air Canada ILS869 Find 
Alaska Airlines ILS79 ILS91 
United Airlines ILS69 ILS100 
Aeromexico ILS1,080 ILS1,173 
Spirit Airlines ILS39 ILS55 -
Airline One Way One Way / Round-Trip Round-Trip 
American Airlines ILS90 ILS106 
Southwest Airlines ILS80 ILS114 
Thomas Cook Airlines Limitedof Manchester Find Find 
Frontier Airlines ILS230 ILS341 
Virgin America ILS55 ILS86
Flights from Seattle to Ontario
Travelling from Seattle to Ontario advices and facts
- The distance between Seattle and Ontario is 966 miles (or 1555 kilometers).
- The shortest flight time is 3h 4m
- There is no time difference between Seattle and Ontario. Check this again shortly before your flight.