Cheap Flights from Chicago to San Antonio
No deal from Chicago to San Antonio has cleared our price bar yet. What we have seen on the route is below.
Across 3 months of observations from Chicago to San Antonio, the lowest round-trip fare we recorded was $158, in August. The typical fare was $336. August was the cheapest month we saw and September the dearest.
The most recent price we saw on this route was $349 on Frontier and United, seen Oct 17. It is an unverified observation and may have changed.
See every deal <a href="/from/chicago">from Chicago</a>, <a href="/to/san-antonio">to San Antonio</a>, or the return direction <a href="/from/san-antonio/to/chicago">San Antonio to Chicago</a>.
Latest price we saw: Chicago to San Antonio
The most recent round-trip fare our sweep found on this route. It is not verified and may have changed since the date shown.
| From | Price | Per mile | Travel dates | Airline | Seen | Check price |
|---|---|---|---|---|---|---|
| Chicago (ORD) to San Antonio (SAT) | $349 | 16.7¢ | Nov 27 – Dec 5 | Frontier and United | Oct 17 | Check price |
Price history: Chicago to San Antonio
What we observed by month, from our signals database. Unverified observations, not bookable prices.
| Month | Low | Typical | Sightings |
|---|---|---|---|
| Oct 2026 | $231 | $398 | 116 |
| Sep 2026 | $240 | $325 | 57 |
| Aug 2026 | $158 | $284 | 223 |
Frequently asked questions
How many flight deals from Chicago to San Antonio are on Sparkflights right now?
There are 0 verified deals from Chicago to San Antonio on the board right now. The list refreshes hourly.
What is the lowest price ever seen from Chicago to San Antonio?
The lowest fare we've recorded from Chicago to San Antonio is $158, based on 396 price observations over 3 months.
How much does a flight from Chicago to San Antonio cost?
The typical round-trip fare we observed from Chicago to San Antonio is $336, against a recorded low of $158. These are observations, not quotes.
When is the cheapest month to fly Chicago to San Antonio?
August was the cheapest month we observed from Chicago to San Antonio and September the dearest, over 3 months of data.
What is the current price from Chicago to San Antonio?
The most recent fare our sweep saw from Chicago to San Antonio is $349, on Oct 17. It is an unverified observation rather than a verified deal, so check it before booking.