SAT

$64 Find Cheap Flights from Illinois to San Antonio

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to San Antonio departing on 1/25. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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Everything you should know

Cheapest round-trip
$153
Overall average: $311
Frontier
Sat 1/10Mon 1/12
STL - SAT • 1 stop
Cheapest non-stop
$262
Typical prices: $367-$488
American Airlines
Sat 1/17Sun 1/18
ORD - SAT • Non-stop
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Flight Deals
Useful Info
Flight Deals

Cheap Flights from Illinois to San Antonio

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Illinois to San Antonio that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Illinois to San Antonio

Sat, Jan 10 - Mon, Jan 12
Frontier Logo
7:43 pm - 9:18 am
STL
-
SAT
13h 35m1 stop
Frontier Logo
8:00 pm - 10:34 pm
SAT
-
STL
26h 34m1 stop
$153Frontier
Tue, Feb 24 - Fri, Feb 27
Multiple Airlines Logo
12:44 pm - 11:59 pm
ORD
-
SAT
11h 15m1 stop
Multiple Airlines Logo
5:18 pm - 11:35 pm
SAT
-
ORD
6h 17m1 stop
$173Multiple Airlines
Fri, Jan 9 - Sun, Jan 18
Frontier Logo
4:30 pm - 3:00 pm
ORD
-
SAT
22h 30m1 stop
Frontier Logo
10:15 am - 9:24 pm
SAT
-
ORD
11h 09m1 stop
$174Frontier
Thu, Jan 15 - Tue, Jan 20
Spirit Airlines Logo
10:48 am - 11:52 pm
ORD
-
SAT
13h 04m1 stop
Spirit Airlines Logo
6:30 am - 5:52 pm
SAT
-
ORD
11h 22m1 stop
$176Spirit Airlines
Wed, Jan 21 - Wed, Jan 28
Spirit Airlines Logo
10:48 am - 11:52 pm
ORD
-
SAT
13h 04m1 stop
Spirit Airlines Logo
6:30 am - 5:52 pm
SAT
-
ORD
11h 22m1 stop
$177Spirit Airlines
Wed, Jan 7 - Fri, Jan 9
Spirit Airlines Logo
3:26 pm - 11:26 pm
ORD
-
SAT
8h 00m1 stop
Spirit Airlines Logo
10:35 am - 11:46 pm
SAT
-
ORD
13h 11m1 stop
$178Spirit Airlines
Wed, Dec 24 - Mon, Feb 2
Delta Logo
4:58 pm - 11:07 pm
MLI
-
SAT
6h 09m1 stop
Delta Logo
4:29 pm - 10:33 pm
SAT
-
MLI
6h 04m1 stop
$259Delta
Wed, Dec 24 - Mon, Feb 2
American Airlines Logo
3:21 pm - 8:41 pm
MLI
-
SAT
5h 20m1 stop
American Airlines Logo
12:52 pm - 10:23 pm
SAT
-
MLI
9h 31m2 stops
$264American Airlines
Sat, Feb 14 - Wed, Feb 18
Delta Logo
5:00 pm - 12:34 am
MLI
-
SAT
7h 34m1 stop
Delta Logo
4:29 pm - 10:30 pm
SAT
-
MLI
6h 01m1 stop
$284Delta
Wed, Dec 24 - Fri, Jan 2
American Airlines Logo
3:21 pm - 8:41 pm
MLI
-
SAT
5h 20m1 stop
American Airlines Logo
6:32 pm - 11:40 pm
SAT
-
MLI
5h 08m1 stop
$309American Airlines
Useful Info

Good to know

Low seasonSeptember
Cheapest flight$64
Best time to beat the crowds with an average 13% drop in price.
Most popular time to fly with an average 21% increase in price.
Flight from Chicago O'Hare Airport to San Antonio

FAQs for booking flights from Illinois to San Antonio

  • How does KAYAK find such low prices on flights from Illinois to San Antonio?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Illinois to San Antonio.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Illinois to San Antonio?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Antonio from Illinois is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Illinois to San Antonio?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Antonio with an airline and back to Illinois with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Illinois to San Antonio?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Antonio from Illinois up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

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Everything you need to know for your flight to San Antonio

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San Antonio (SAT)