Cheap flights from Ontario to United States

Travel > North America > United States

Check our current prices for flights from Ontario to United States. 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 to United States, you will need to run a search below.

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From $110 / RT details

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Cheap San Antonio airfares from $110/RT are provided by Cheapoair.com. Outbound flight is leaving on 02/20/2025, 09:35 pm from Ontario Int`l (ONT) airport and arrives at San Antonio Intl (SAT) at 04:58 pm. The flight time is 19 hours and 23 minutes. The Returning flight departes on 02/25/2025, 02:18 pm (other return dates are also available). Date posted: 30 Jan 2025

Price evolution for flights From Ontario To United States

Price overview for flights from Ontario to United States

Recent Deals on Flights from Ontario to United States:Roundtrip / Oneway

  • $110Frontier Airlines flight Frontier Airlines 
    FromToDepartureTime
    Ontario, CA (ONT)San Antonio, TX (SAT)02/20/202509:35 pm
    San Antonio, TX (SAT)Ontario, CA (ONT)02/25/202502:18 pm
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  • $120Frontier Airlines flight Frontier Airlines 
    FromToDepartureTime
    Ontario, CA (ONT)San Antonio, TX (SAT)02/27/202509:35 pm
    San Antonio, TX (SAT)Ontario, CA (ONT)03/05/202505:58 pm
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  • $140Frontier Airlines flight Frontier Airlines 
    FromToDepartureTime
    Ontario, CA (ONT)Saint Louis, MO (STL)04/07/202512:59 am
    Saint Louis, MO (STL)Ontario, CA (ONT)04/12/202506:51 pm
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  • $146Multiple Airlines flight Multiple Airlines 
    FromToDepartureTime
    Ontario, CA (ONT)Detroit, MI (DTW)03/06/202512:59 am
    Detroit, MI (DTW)Ontario, CA (ONT)03/18/202511:45 am
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  • $160Frontier Airlines flight Frontier Airlines 
    FromToDepartureTime
    Ontario, CA (ONT)San Antonio, TX (SAT)02/21/202505:13 pm
    San Antonio, TX (SAT)Ontario, CA (ONT)03/02/202505:26 pm
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  • $61Frontier Airlines flight Frontier Airlines 
    FromToDepartureTime
    Ontario, CA (ONT)San Antonio, TX (SAT)04/12/202506:47 pm
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  • $66Frontier Airlines flight Frontier Airlines 
    FromToDepartureTime
    Ontario, CA (ONT)San Antonio, TX (SAT)02/26/202502:43 pm
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  • $66Frontier Airlines flight Frontier Airlines 
    FromToDepartureTime
    Ontario, CA (ONT)Saint Louis, MO (STL)02/24/202502:43 pm
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  • $75Frontier Airlines flight Frontier Airlines 
    FromToDepartureTime
    Ontario, CA (ONT)Detroit, MI (DTW)02/25/202507:58 pm
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  • $80Frontier Airlines flight Frontier Airlines 
    FromToDepartureTime
    Ontario, CA (ONT)Saint Louis, MO (STL)02/21/202512:59 am
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