SAT

$63 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 1/23. 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
$156
Overall average: $311
Frontier
Mon 1/12Fri 1/16
STL - SAT • 1 stop
Cheapest non-stop
$277
Typical prices: $383-$509
American Airlines
Sat 12/6Wed 12/10
ORD - SAT • Non-stop
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We hope you love your trip to San Antonio!
Flight Deals
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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

Mon, Jan 12 - Fri, Jan 16
Frontier Logo
8:50 am - 7:03 pmSTL-SAT
10h 13m1 stop
Frontier Logo
11:17 am - 6:32 pmSAT-STL
7h 15m1 stop
$156Frontier
Find Deal
Wed, Feb 18 - Sat, Feb 21
Frontier Logo
7:43 pm - 9:18 amSTL-SAT
13h 35m1 stop
Frontier Logo
3:02 pm - 7:50 amSAT-STL
16h 48m1 stop
$158Frontier
Find Deal
Sat, Jan 10 - Mon, Jan 12
Multiple Airlines Logo
6:51 pm - 4:08 pmORD-SAT
21h 17m1 stop
Multiple Airlines Logo
8:00 pm - 12:42 pmSAT-ORD
16h 42m1 stop
$176Multiple Airlines
Find Deal
Sat, Jan 10 - Mon, Jan 12
Multiple Airlines Logo
6:51 pm - 4:08 pmORD-SAT
21h 17m1 stop
Multiple Airlines Logo
8:00 pm - 12:42 pmSAT-ORD
16h 42m1 stop
$180Multiple Airlines
Find Deal
Sat, Jan 10 - Tue, Jan 13
Spirit Airlines Logo
12:44 pm - 11:52 pmORD-SAT
11h 08m1 stop
Spirit Airlines Logo
6:30 am - 5:52 pmSAT-ORD
11h 22m1 stop
$181Spirit Airlines
Find Deal
Fri, Jan 9 - Wed, Jan 14
Spirit Airlines Logo
12:44 pm - 11:52 pmORD-SAT
11h 08m1 stop
Spirit Airlines Logo
6:30 am - 12:42 pmSAT-ORD
6h 12m1 stop
$182Spirit Airlines
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Sat, Feb 21 - Tue, Feb 24
Delta Logo
5:00 pm - 12:34 amMLI-SAT
7h 34m1 stop
Delta Logo
4:29 pm - 10:30 pmSAT-MLI
6h 01m1 stop
$259Delta
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Tue, Feb 10 - Wed, Feb 18
United Airlines Logo
6:30 am - 12:24 pmPIA-SAT
5h 54m1 stop
United Airlines Logo
7:00 am - 12:43 pmSAT-PIA
5h 43m1 stop
$259United Airlines
Find Deal
Tue, Feb 10 - Wed, Feb 18
United Airlines Logo
10:45 am - 7:41 pmPIA-SAT
8h 56m2 stops
United Airlines Logo
7:00 am - 2:10 pmSAT-PIA
7h 10m1 stop
$264United Airlines
Find Deal
Tue, Feb 10 - Sat, Feb 14
Delta Logo
3:35 pm - 10:28 pmBMI-SAT
6h 53m1 stop
Delta Logo
8:00 am - 2:56 pmSAT-BMI
6h 56m1 stop
$350Delta
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Useful Info

Good to know

Low seasonSeptember
Cheapest flight$63
Best time to beat the crowds with an average 12% drop in price.
Most popular time to fly with an average 20% 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)