starting at $146
Flaut.Travel was designed and developed by a team dedicated to making the process of searching, comparing and booking airline tickets as easy and convenient as possible. Our service helps travelers to find and buy the cheapest flights from San Antonio to Ontario. We have connected more than 40 airlines and airline ticketing agencies to help you find the most suitable and affordable flight option.
The minimum one-way ticket price from San Antonio to Ontario is $146 (June 2026), while the maximum is $146 (May 2026). On average, a ticket costs $146–$146.
A non-stop flight is the most convenient and comfortable way to fly from San Antonio to Ontario, despite the fact that sometimes flights with transfers can cost significantly less.
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Answers to questions about the route that travelers are most interested in.
We keep tight track on airlines' pre-holidays sales and other special offers occurences all the time to let you save maximum amount of funds while traveling to your family or just going out on vacation.
The route San Antonio — Ontario is served by a single airline — Frontier Airlines. This means that when planning your trip, you won’t need to spend time choosing between dozens of carriers: all flights are operated by one provider, which simplifies the booking process. Despite the limited choice, passengers can still plan ahead, select optimal departure dates, and buy tickets at the lowest price — from $146. Using our service, you can quickly compare available Frontier Airlines flights and book a seat in advance at a favorable rate.
starting at $146
There appear to be no non-stop flights from San Antonio to Ontario at this time.... Well, or something went wrong on our side and we couldn't find anything
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The cheapest flight ticket from San Antonio to Ontario according to data for the last 48 hours costs $146
Often the best time to buy tickets from San Antonio to Ontario is 2 months before departure.
Based on statistics over the past years, the lowest prices for flights from San Antonio to Ontario can be found flying in these months: June, May.
The fastest flights from San Antonio to Ontario start from 5 hours 55 minutes in the air.
The following airlines operate direct flights on the route San Antonio — Ontario:
The cheapest one-way flight from San Antonio to Ontario departs on 05/27/2026, is operated by Frontier Airlines and costs $146
There is no information about the cheapest roundtrip flight from San Antonio to Ontario
Fastest flight from San Antonio to Ontario takes 5h 55m
There are no direct flights on this route.
The distance between San Antonio and Ontario is 1878km (1164 miles). The time difference between San Antonio and Ontario is 2h
We couldn't find any special offers for flights from San Antonio to Ontario