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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From $128 / RT details

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Cheap Ontario airfares from $128/RT are provided by Cheapoair.com. Outbound flight is leaving on 11/01/2023, 05:30 am from Seattle/tacoma Sea/tac (SEA) airport and arrives at Ontario Int`l (ONT) at 10:24 am. The flight time is 4 hours and 54 minutes. The Returning flight departes on 11/15/2023, 06:10 am (other return dates are also available). Date posted: 13 Sep 2023

Price evolution for flights From Seattle To Ontario, CA

Price overview for flights from Seattle to Ontario, CA

Recent Deals on Flights from Seattle to Ontario, CA:Roundtrip / Oneway

  • $128Frontier Airlines flight Frontier Airlines 
    FromToDepartureTime
    Seattle, WA (SEA)Ontario, CA (ONT)11/01/202305:30 am
    Ontario, CA (ONT)Seattle, WA (SEA)11/15/202306:10 am
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  • $145Multiple Airlines flight Multiple Airlines 
    FromToDepartureTime
    Seattle, WA (SEA)Ontario, CA (ONT)11/01/202305:30 am
    Ontario, CA (ONT)Seattle, WA (SEA)11/15/202311:08 am
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  • $146Frontier Airlines flight Frontier Airlines 
    FromToDepartureTime
    Seattle, WA (SEA)Ontario, CA (ONT)10/17/202306:00 am
    Ontario, CA (ONT)Seattle, WA (SEA)10/31/202304:00 pm
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  • $168Frontier Airlines flight Frontier Airlines 
    FromToDepartureTime
    Seattle, WA (SEA)Ontario, CA (ONT)10/21/202305:30 am
    Ontario, CA (ONT)Seattle, WA (SEA)10/29/202305:15 am
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  • $405Multiple Airlines flight Multiple Airlines 
    FromToDepartureTime
    Seattle, WA (SEA)Ontario, CA (ONT)10/17/202303:15 pm
    Ontario, CA (ONT)Seattle, WA (SEA)10/31/202304:00 pm
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  • $70Frontier Airlines flight Frontier Airlines 
    FromToDepartureTime
    Seattle, WA (SEA)Ontario, CA (ONT)10/16/202306:55 pm
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  • $312Alaska Airlines flight Alaska Airlines 
    FromToDepartureTime
    Seattle, WA (SEA)Ontario, CA (ONT)10/16/202308:00 am
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  • $332Alaska Airlines flight Alaska Airlines 
    FromToDepartureTime
    Seattle, WA (SEA)Ontario, CA (ONT)10/06/202307:45 am
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Know what to do when flying to Ontario, CA?

Ontario Travel Guide A city in the San Bernardino County in California, Ontario offers wonderful living conditions for its residents. Over the years its reputation as a significant tourist attraction has also grown considerably. The city got the name of Ontario [...]
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