Best airfares from Seattle to Ontario
Jetradar compares airfares from Seattle to Ontario with hundreds of airlines (including United Airlines, American Airlines, Air Canada) 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 NZ$133. The cheapest oneway price found within the last week was NZ$73.Cheapest Flights from Seattle, WA to Ontario, CA
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Airline One Way One Way / Round-Trip Round-Trip 
United Airlines NZ$101 NZ$145 
American Airlines NZ$131 NZ$155 
Air Canada NZ$1,266 Find 
Virgin America NZ$81 NZ$125 
Aeromexico NZ$1,574 NZ$1,709 -
Airline One Way One Way / Round-Trip Round-Trip 
Alaska Airlines NZ$115 NZ$133 
Spirit Airlines NZ$57 NZ$80 
Southwest Airlines NZ$117 NZ$166 
Frontier Airlines NZ$335 NZ$497 
Thomas Cook Airlines Limitedof Manchester Find Find
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.