Cheap flights from Seattle to Ontario, CA
Travel > North America > United States > Seattle to Ontario, CA flights
Check our current prices for flights from Seattle to Ontario, CA. Please note that we also give you historical search data for this city connection. These are all airfares that people found in the past, in order to find more current flight information from Seattle to Ontario, CA, you will need to run a search below.
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Cheap Ontario airfares from $173/RT are provided by Cheapoair.com. Outbound flight is leaving on 04/06/2025, 12:46 pm from Seattle/tacoma Sea/tac (SEA) airport and arrives at Ontario Int`l (ONT) at 03:25 pm. The flight time is 2 hours and 39 minutes. The Returning flight departes on 04/07/2025, 04:11 pm (other return dates are also available). Date posted: 18 Feb 2025
Price evolution for flights From Seattle To Ontario, CA
Recent Deals on Flights from Seattle to Ontario, CA:Roundtrip / Oneway
- $173
Multiple Airlines
cheapoair.com check priceFrom To Departure Time Seattle, WA (SEA) Ontario, CA (ONT) 04/06/2025 12:46 pm Ontario, CA (ONT) Seattle, WA (SEA) 04/07/2025 04:11 pm - $178
Frontier Airlines
cheapoair.com check priceFrom To Departure Time Seattle, WA (SEA) Ontario, CA (ONT) 04/06/2025 12:46 pm Ontario, CA (ONT) Seattle, WA (SEA) 04/07/2025 10:12 am - We are sorry but currently there are no oneway offers for flights from Seattle to Ontario, CA.
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