starting at $229
starting at $73
Compare airlines, prices, and flight durations for your trip
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 Chicago to San Antonio. We have connected more than 40 airlines and airline ticketing agencies to help you find the most suitable and affordable flight option.
A non-stop flight is the most convenient and comfortable way to fly from Chicago to San Antonio, despite the fact that sometimes flights with transfers can cost significantly less.
A direct flight is the easiest way to get to your destination. The following airlines operate non-stop flights from Chicago to San Antonio:
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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.
Flights from Chicago to San Antonio are operated by several airlines — American Airlines and Frontier Airlines. This allows passengers to flexibly choose flights based on departure time, cost, and additional services. The minimum ticket price starts at $73, making this destination accessible to travelers with different budgets. We help compare all available options in real time, so you can book tickets at the best value for money. The service ensures transparent search and lets you book affordable flights in just a few clicks.
starting at $229
starting at $73
Chicago — San Antonio
02/01/2026
Departure
Direct flight
AA3459
starting at $570
Chicago — San Antonio
02/03/2026
Departure
Direct flight
AA1275
starting at $229
Unable to find information about the schedule of direct flights from
The cheapest one-way flight from Chicago to San Antonio departs on 02/02/2026, is operated by Frontier Airlines and costs $73
There is no information about the cheapest roundtrip flight from Chicago to San Antonio
Fastest flight from Chicago to San Antonio takes 11h 23m
There are direct flights on this route 2 days a week: Su and Tu
The distance between Chicago and San Antonio is 1694km (1050 miles). There are 21 direct flights from Chicago to San Antonio. Chicago and San Antonio are in the same time zone. Flights from Chicago begin at 7:55 AM. The latest flight from Chicago departs at 9:30 PM
We couldn't find any special offers for flights from Chicago to San Antonio
The cheapest flight ticket from Chicago to San Antonio according to data for the last 48 hours costs $73
Often the best time to buy tickets from Chicago to San Antonio is 2 months before departure.
Based on statistics over the past years, the lowest prices for flights from Chicago to San Antonio can be found flying in these months: February.
The fastest flights from Chicago to San Antonio start from 11 hours 23 minutes in the air.
The following airlines operate direct flights on the route Chicago — San Antonio: American Airlines
We carefully collect statistics on the search and pricing of airlines and, based on these data, we make an assumption about future prices. Thus, you can better understand which season is the cheapest to fly from Chicago to San Antonio