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>

$76 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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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

mer, mag 6 - dom, mag 10

6:51 pm - 8:14 pm

STL

SAT

25h 23m

1 stop

7:54 pm - 7:23 pm

SAT

STL

23h 29m

1 stop

$151Frontier

mar, mag 5 - sab, mag 16

6:51 pm - 8:14 pm

STL

SAT

25h 23m

1 stop

8:59 pm - 11:21 am

SAT

STL

14h 22m

1 stop

$171Frontier

mer, mag 6 - dom, mag 10

6:51 pm - 8:14 pm

STL

SAT

25h 23m

1 stop

7:54 pm - 7:23 pm

SAT

STL

23h 29m

1 stop

$191Frontier

ven, apr 17 - mer, apr 22

7:46 pm - 5:35 pm

EVV

SAT

21h 49m

1 stop

2:12 pm - 3:23 pm

SAT

EVV

25h 11m

1 stop

$274Multiple Airlines

ven, apr 17 - gio, apr 23

7:46 pm - 5:35 pm

EVV

SAT

21h 49m

1 stop

6:00 am - 7:03 am

SAT

EVV

25h 03m

2 stops

$283Multiple Airlines

mar, apr 7 - ven, apr 10

4:36 pm - 9:27 am

ORD

SAT

16h 51m

1 stop

10:22 am - 7:51 pm

SAT

ORD

9h 29m

1 stop

$294Spirit Airlines

mer, mag 20 - mer, mag 27

7:45 pm - 10:54 pm

ORD

SAT

3h 09mnonstop

6:40 am - 9:38 am

SAT

ORD

2h 58mnonstop

$297United Airlines

mer, apr 8 - mer, apr 15

10:05 am - 12:55 pm

MDW

SAT

2h 50mnonstop

2:35 pm - 5:10 pm

SAT

MDW

2h 35mnonstop

$297Southwest

lun, apr 13 - mer, apr 15

9:40 pm - 12:30 am

MDW

SAT

2h 50mnonstop

2:35 pm - 5:10 pm

SAT

MDW

2h 35mnonstop

$303Southwest

mer, apr 22 - sab, apr 25

3:20 pm - 10:58 pm

MLI

SAT

7h 38m

1 stop

2:14 pm - 11:02 pm

SAT

MLI

8h 48m

2 stops

$344United Airlines

Useful Info

Low season	January
High season	April
Cheapest flight	$76

Best time to beat the crowds but there is an average 3% increase in price.

Most popular time to fly with an average 4% 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

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Cabin class

Complete your trip

Direct Flights

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Origins

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Return flight deals

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

San Antonio (SAT)

SAT

$76 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