Cheap flights from Ontario, CA to Seattle
Travel > North America > United States > Ontario, CA to Seattle flights
Check our current prices for flights from Ontario, CA to Seattle. 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 Ontario, CA to Seattle, you will need to run a search below.
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Cheap Seattle airfares from $118/RT are provided by Cheapoair.com. Outbound flight is leaving on 02/28/2025, 11:25 am from Ontario Int`l (ONT) airport and arrives at Seattle/tacoma Sea/tac (SEA) at 02:16 pm. The flight time is 2 hours and 51 minutes. The Returning flight departes on 03/14/2025, 12:52 pm (other return dates are also available). Date posted: 18 Jan 2025
Price evolution for flights From Ontario, CA To Seattle
Recent Deals on Flights from Ontario, CA to Seattle:Roundtrip / Oneway
- $118
Frontier Airlines
cheapoair.com check priceFrom To Departure Time Ontario, CA (ONT) Seattle, WA (SEA) 02/28/2025 11:25 am Seattle, WA (SEA) Ontario, CA (ONT) 03/14/2025 12:52 pm - $139 Frontier Airlines
cheapoair.com check priceFrom To Departure Time Ontario, CA (ONT) Seattle, WA (SEA) 03/05/2025 02:43 pm Seattle, WA (SEA) Ontario, CA (ONT) 03/11/2025 11:48 am - $59 Frontier Airlines
cheapoair.com check priceFrom To Departure Time Ontario, CA (ONT) Seattle, WA (SEA) 03/20/2025 10:21 am - $141 Frontier Airlines
cheapoair.com check priceFrom To Departure Time Ontario, CA (ONT) Seattle, WA (SEA) 02/19/2025 12:59 am - $165 Frontier Airlines
cheapoair.com check priceFrom To Departure Time Ontario, CA (ONT) Seattle, WA (SEA) 02/22/2025 12:59 am
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Know what to do when flying to Seattle?
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