SAT

$62 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 1/10. 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
$136
Overall average: $375
Frontier
Tue 11/18Fri 11/21
STL - SAT • 1 stop
Cheapest non-stop
$261
Typical prices: $393-$535
American Airlines
Thu 12/4Thu 12/11
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

Tue, Nov 18 - Fri, Nov 21
Frontier Logo
7:45 pm - 6:45 pmSTL-SAT
23h 00m1 stop
Frontier Logo
7:00 am - 10:02 amSAT-STL
27h 02m1 stop
$136Frontier
Find Deal
Wed, Nov 19 - Fri, Nov 21
Frontier Logo
7:45 pm - 2:28 pmSTL-SAT
18h 43m1 stop
Frontier Logo
12:44 pm - 10:02 amSAT-STL
21h 18m1 stop
$138Frontier
Find Deal
Sat, Dec 6 - Mon, Dec 8
Multiple Airlines Logo
9:06 pm - 1:00 pmORD-SAT
15h 54m1 stop
Multiple Airlines Logo
7:43 pm - 3:12 pmSAT-ORD
19h 29m2 stops
$157Multiple Airlines
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Thu, Dec 4 - Sat, Dec 6
Multiple Airlines Logo
6:50 am - 1:00 pmORD-SAT
30h 10m1 stop
Multiple Airlines Logo
7:00 am - 12:13 amSAT-ORD
17h 13m1 stop
$161Multiple Airlines
Find Deal
Tue, Dec 2 - Wed, Dec 3
American Airlines Logo
5:56 pm - 12:28 amSTL-SAT
6h 32m1 stop
American Airlines Logo
3:00 pm - 7:29 pmSAT-STL
4h 29m1 stop
$179American Airlines
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Wed, Dec 3 - Wed, Dec 10
Spirit Airlines Logo
10:12 am - 6:32 pmORD-SAT
8h 20m1 stop
Spirit Airlines Logo
7:00 am - 6:05 amSAT-ORD
23h 05m1 stop
$191Spirit Airlines
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Mon, Nov 24 - Wed, Nov 26
Spirit Airlines Logo
5:00 am - 6:32 pmORD-SAT
13h 32m1 stop
Spirit Airlines Logo
7:37 pm - 9:17 amSAT-ORD
13h 40m1 stop
$194Spirit Airlines
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Tue, Mar 3 - Tue, Mar 3
Delta Logo
6:10 am - 12:23 pmSTL-SAT
6h 13m1 stop
Delta Logo
6:24 pm - 11:38 pmSAT-STL
5h 14m1 stop
$227Delta
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Mon, Dec 8 - Fri, Dec 12
American Airlines Logo
5:58 pm - 12:25 amSTL-SAT
6h 27m1 stop
American Airlines Logo
6:20 pm - 11:59 pmSAT-STL
5h 39m1 stop
$229American Airlines
Find Deal
Mon, Mar 2 - Wed, Mar 4
Delta Logo
6:48 pm - 12:36 amSTL-SAT
5h 48m1 stop
Delta Logo
6:40 am - 2:58 pmSAT-STL
8h 18m1 stop
$253Delta
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Useful Info

Good to know

Low seasonSeptember
Cheapest flight$62
Best time to beat the crowds with an average 12% drop in price.
Most popular time to fly with an average 21% increase in price.
Flight from St. Louis 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)