Best airfares from Seattle to Ontario
Jetradar compares airfares from Seattle to Ontario with hundreds of airlines (including Spirit Airlines, United Airlines, American 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 €91. The cheapest oneway price found within the last week was €50.Cheapest Flights from Seattle, WA to Ontario, CA
-
Airline One Way One Way / Round-Trip Round-Trip 
Spirit Airlines €39 €55 
United Airlines €69 €100 
American Airlines €90 €106 
Air Canada €869 Find 
Aeromexico €1,080 €1,173 -
Airline One Way One Way / Round-Trip Round-Trip 
Virgin America €55 €86 
Southwest Airlines €80 €114 
Alaska Airlines €79 €91 
Thomas Cook Airlines Limitedof Manchester Find Find 
Frontier Airlines €230 €341
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.