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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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

Recent Deals on Flights from Ontario to United States:Roundtrip / Oneway
- $110
Frontier Airlines
cheapoair.com check priceFrom To Departure Time Ontario, CA (ONT) San Antonio, TX (SAT) 02/20/2025 09:35 pm San Antonio, TX (SAT) Ontario, CA (ONT) 02/25/2025 02:18 pm - $120
Frontier Airlines
cheapoair.com check priceFrom To Departure Time Ontario, CA (ONT) San Antonio, TX (SAT) 02/27/2025 09:35 pm San Antonio, TX (SAT) Ontario, CA (ONT) 03/05/2025 05:58 pm - $140
Frontier Airlines
cheapoair.com check priceFrom To Departure Time Ontario, CA (ONT) Saint Louis, MO (STL) 04/07/2025 12:59 am Saint Louis, MO (STL) Ontario, CA (ONT) 04/12/2025 06:51 pm - $146
Multiple Airlines
cheapoair.com check priceFrom To Departure Time Ontario, CA (ONT) Detroit, MI (DTW) 03/06/2025 12:59 am Detroit, MI (DTW) Ontario, CA (ONT) 03/18/2025 11:45 am - $160
Frontier Airlines
cheapoair.com check priceFrom To Departure Time Ontario, CA (ONT) San Antonio, TX (SAT) 02/21/2025 05:13 pm San Antonio, TX (SAT) Ontario, CA (ONT) 03/02/2025 05:26 pm - $61
Frontier Airlines
cheapoair.com check priceFrom To Departure Time Ontario, CA (ONT) San Antonio, TX (SAT) 04/12/2025 06:47 pm - $66
Frontier Airlines
cheapoair.com check priceFrom To Departure Time Ontario, CA (ONT) San Antonio, TX (SAT) 02/26/2025 02:43 pm - $66
Frontier Airlines
cheapoair.com check priceFrom To Departure Time Ontario, CA (ONT) Saint Louis, MO (STL) 02/24/2025 02:43 pm - $75
Frontier Airlines
cheapoair.com check priceFrom To Departure Time Ontario, CA (ONT) Detroit, MI (DTW) 02/25/2025 07:58 pm - $80
Frontier Airlines
cheapoair.com check priceFrom To Departure Time Ontario, CA (ONT) Saint Louis, MO (STL) 02/21/2025 12:59 am
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