SAT

$70 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 3/4. 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
$154
Overall average: $329
Frontier
Fri 2/27Mon 3/2
STL - SAT • 1 stop
Cheapest non-stop
$277
Typical prices: $248-$577
Southwest
Wed 3/25Wed 4/1
STL - SAT • Non-stop
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We hope you love your trip to San Antonio!
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

Fri, Feb 27 - Mon, Mar 2
Frontier Logo
1:59 pm - 7:37 pm
STL
-
SAT
5h 38m
1 stop
Frontier Logo
1:52 pm - 11:59 pm
SAT
-
STL
10h 07m
1 stop
$154Frontier
Fri, Feb 27 - Sun, Mar 1
Frontier Logo
1:59 pm - 7:37 pm
STL
-
SAT
5h 38m
1 stop
Frontier Logo
8:24 pm - 11:59 pm
SAT
-
STL
27h 35m
1 stop
$160Frontier
Sat, Mar 7 - Tue, Mar 10
Multiple Airlines Logo
8:12 pm - 8:06 am
STL
-
SAT
11h 54m
1 stop
Multiple Airlines Logo
6:00 am - 11:19 pm
SAT
-
STL
17h 19m
1 stop
$194Multiple Airlines
Wed, May 6 - Sun, May 10
Delta Logo
6:00 am - 12:59 pm
STL
-
SAT
6h 59m
1 stop
Delta Logo
4:09 pm - 11:59 pm
SAT
-
STL
7h 50m
1 stop
$197Delta
Fri, Mar 6 - Tue, Mar 10
Delta Logo
6:47 pm - 12:37 am
STL
-
SAT
5h 50m
1 stop
Delta Logo
5:10 am - 11:09 am
SAT
-
STL
5h 59m
1 stop
$201Delta
Thu, Feb 26 - Sun, Mar 1
American Airlines Logo
6:50 pm - 11:59 pm
STL
-
SAT
5h 09m
1 stop
American Airlines Logo
5:00 am - 8:55 am
SAT
-
STL
3h 55m
1 stop
$204American Airlines
Mon, Mar 9 - Sun, Mar 15
United Airlines Logo
5:25 pm - 11:15 pm
PIA
-
SAT
5h 50m
1 stop
United Airlines Logo
7:00 am - 12:43 pm
SAT
-
PIA
5h 43m
1 stop
$279United Airlines
Sun, Feb 22 - Sat, Feb 28
Multiple Airlines Logo
4:42 pm - 4:18 pm
ORD
-
SAT
23h 36m
1 stop
Multiple Airlines Logo
2:13 pm - 7:54 am
SAT
-
ORD
17h 41m
2 stops
$279Multiple Airlines
Wed, Mar 11 - Wed, Mar 18
American Airlines Logo
6:10 am - 2:18 pm
ORD
-
SAT
8h 08m
1 stop
American Airlines Logo
5:19 am - 8:22 am
SAT
-
ORD
3h 03mnonstop
$280American Airlines
Tue, Mar 31 - Tue, Apr 7
United Airlines Logo
6:30 am - 3:46 pm
MLI
-
SAT
9h 16m
2 stops
United Airlines Logo
6:49 am - 12:27 pm
SAT
-
MLI
5h 38m
1 stop
$284United Airlines
Useful Info

Good to know

Low seasonJanuary
Cheapest flight$70
Best time to beat the crowds but there is an average 2% increase in price.
Most popular time to fly with an average 7% 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.

Traveling to a place near San Antonio?

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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)