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. Visit our flight page for the latest deals!>/a>

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. Visit our flight page for the latest deals!>/a>

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. Visit our flight page for the latest deals!>/a>

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. Visit our flight page for the latest deals!>/a>

$82 CHEAP FLIGHTS from Illinois to San Antonio

SAT

KAYAK searches hundreds of travel sites at once for deals on flights to San Antonio

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Flight Deals

Cheap Flights from Illinois to San Antonio

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Direct

Recent round-trip flight deals from Illinois to San Antonio

Fri, Apr 17 - Sun, Apr 19

4:59 pm - 5:35 pm

STL

SAT

24h 36m

1 stop

2:59 pm - 7:32 pm

SAT

STL

28h 33m

1 stop

$171Frontier

Thu, Apr 2 - Thu, Apr 9

6:29 pm - 5:05 pm

STL

SAT

22h 36m

1 stop

6:45 am - 9:48 am

SAT

STL

27h 03m

1 stop

$194Frontier

Thu, Mar 26 - Sun, Apr 5

11:21 am - 9:27 am

STL

SAT

22h 06m

2 stops

6:45 am - 9:48 am

SAT

STL

27h 03m

1 stop

$215Multiple Airlines

Sat, Apr 4 - Sat, Apr 11

5:12 am - 10:58 am

STL

SAT

5h 46m

1 stop

5:00 am - 8:54 am

SAT

STL

3h 54m

1 stop

$218American Airlines

Fri, Apr 10 - Mon, Apr 13

8:16 pm - 12:19 am

STL

SAT

28h 03m

1 stop

1:22 pm - 11:25 pm

SAT

STL

10h 03m

1 stop

$222Multiple Airlines

Mon, Apr 6 - Thu, Apr 9

6:10 pm - 9:27 am

ORD

SAT

15h 17m

1 stop

10:22 am - 5:15 pm

SAT

ORD

6h 53m

1 stop

$279Spirit Airlines

Tue, Mar 31 - Tue, Apr 7

6:10 pm - 9:27 am

ORD

SAT

15h 17m

1 stop

1:22 pm - 11:50 am

SAT

ORD

22h 28m

3 stops

$280Spirit Airlines

Tue, Mar 31 - Tue, Apr 7

8:35 pm - 11:30 pm

MDW

SAT

2h 55mnonstop

5:40 pm - 9:45 pm

SAT

MDW

4h 05m

1 stop

$283Southwest

Tue, Mar 31 - Tue, Apr 7

5:30 pm - 12:10 am

MDW

SAT

6h 40m

1 stop

5:40 pm - 9:45 pm

SAT

MDW

4h 05m

1 stop

$292Southwest

Sat, Apr 11 - Sat, Apr 18

3:45 pm - 10:52 pm

BMI

SAT

7h 07m

1 stop

3:11 pm - 11:52 pm

SAT

BMI

8h 41m

2 stops

$294American Airlines

Useful Info

Low season	January
High season	April
Cheapest flight	$82

Best time to beat the crowds but there is an average 2% increase in price.

Most popular time to fly with an average 6% increase in price.

Flight from St. Louis 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.

Schertz

Everything you need to know for your flight to San Antonio

Airports

Cabin class

Complete your trip

Direct Flights

Flights to other cities

Origins

Other airports

Return flight deals

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

San Antonio (SAT)

SAT

$82 Find Cheap Flights from Illinois to San Antonio

KAYAK searches hundreds of travel sites at once for deals on flights to San Antonio

Cheap Flights from Illinois to San Antonio

Recent round-trip flight deals from Illinois to San Antonio

Recent one-way flight deals from Illinois to San Antonio

Recent last minute flight deals from Illinois to San Antonio

Recent direct flight deals from Illinois to San Antonio

Good to know

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?

Everything you need to know for your flight to San Antonio

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

Cabin class types available on flights to Illinois

Complete your trip to San Antonio with a hotel stay or car rental

Find direct flights for San Antonio

Flights to other popular destinations

Flights from domestic origins to San Antonio

Choose which airport to fly into in San Antonio

Find deals for your return flight