SAT

$71 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 12/10. 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

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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

Fri, Nov 14 - Tue, Nov 18
American Airlines Logo
5:56 pm - 12:28 amSTL-SAT
6h 32m1 stop
American Airlines Logo
6:00 am - 12:37 pmSAT-STL
6h 37m1 stop
$159American Airlines
Find Deal
Tue, Oct 7 - Wed, Oct 8
United Airlines Logo
5:28 pm - 10:55 pmSTL-SAT
5h 27m1 stop
United Airlines Logo
2:25 pm - 6:57 pmSAT-STL
4h 32m1 stop
$177United Airlines
Find Deal
Tue, Oct 21 - Thu, Oct 30
Frontier Logo
7:15 am - 3:14 pmORD-SAT
7h 59m1 stop
Frontier Logo
8:43 pm - 12:16 amSAT-ORD
27h 33m1 stop
$186Frontier
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Sun, Sep 28 - Thu, Oct 2
Frontier Logo
2:38 pm - 1:16 pmSTL-SAT
22h 38m1 stop
Frontier Logo
9:33 pm - 8:40 pmSAT-STL
23h 07m1 stop
$186Frontier
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Mon, Dec 8 - Mon, Dec 8
Delta Logo
6:00 am - 12:10 pmSTL-SAT
6h 10m1 stop
Delta Logo
4:51 pm - 11:41 pmSAT-STL
6h 50m1 stop
$197Delta
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Fri, Nov 7 - Wed, Nov 12
Logo
10:43 pm - 3:35 pmORD-SAT
16h 52m1 stop
Logo
4:16 pm - 11:42 pmSAT-ORD
7h 26m1 stop
$199
Find Deal
Wed, Nov 5 - Sat, Nov 15
Logo
5:05 am - 3:11 pmORD-SAT
10h 06m1 stop
Logo
3:12 pm - 12:12 amSAT-ORD
9h 00m1 stop
$210
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Wed, Nov 5 - Mon, Nov 10
Spirit Airlines Logo
5:05 am - 3:11 pmORD-SAT
10h 06m1 stop
Spirit Airlines Logo
4:16 pm - 11:42 pmSAT-ORD
7h 26m1 stop
$212Spirit Airlines
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Tue, Oct 21 - Tue, Oct 28
Delta Logo
9:20 am - 5:17 pmMDW-SAT
7h 57m1 stop
Delta Logo
5:25 am - 12:28 pmSAT-MDW
7h 03m1 stop
$217Delta
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Fri, Dec 12 - Sun, Dec 14
Spirit Airlines Logo
8:30 pm - 5:09 amORD-SAT
8h 39m1 stop
Spirit Airlines Logo
4:16 pm - 11:42 pmSAT-ORD
7h 26m1 stop
$217Spirit Airlines
Find Deal

Everything you should know

Cheapest round-trip
$159
Overall average: $366
American Airlines
Fri 11/14Tue 11/18
STL - SAT • 1 stop
Cheapest non-stop
$227
Typical prices: $326-781
Southwest
Sat 10/18Tue 10/21
STL - SAT • Non-stop
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KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to San Antonio!
Useful Info

Good to know

Low seasonAugust
Cheapest flight$71
Best time to beat the crowds with an average 17% drop in price.
Most popular time to fly and prices are also 3% lower on average.
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.

Traveling to a place near San Antonio?

Book flights to San Antonio if you plan to visit one of these locations
Schertz

Everything you need to know for your flight to San Antonio

Information on the airport you'll fly into in San Antonio

San Antonio (SAT)

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