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>

$74 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

Mon, May 4 - Fri, May 8

8:17 pm - 2:19 pm

STL

SAT

18h 02m

1 stop

3:14 pm - 7:12 pm

SAT

STL

27h 58m

1 stop

$161Frontier

Wed, Apr 8 - Fri, Apr 10

8:16 pm - 12:19 am

STL

SAT

28h 03m

1 stop

6:45 am - 9:48 am

SAT

STL

27h 03m

1 stop

$171Frontier

Wed, Mar 25 - Mon, Mar 30

6:00 am - 12:42 pm

BMI

SAT

6h 42m

1 stop

6:13 am - 11:19 am

SAT

BMI

5h 06m

1 stop

$269Delta

Thu, Apr 2 - Mon, Apr 6

4:04 pm - 10:30 pm

BMI

SAT

6h 26m

1 stop

4:29 pm - 10:19 pm

SAT

BMI

5h 50m

1 stop

$274Delta

Mon, Mar 23 - Wed, Mar 25

6:10 pm - 9:27 am

ORD

SAT

15h 17m

1 stop

10:22 am - 7:51 pm

SAT

ORD

9h 29m

1 stop

$279Spirit Airlines

Wed, Apr 8 - Sat, Apr 11

5:00 am - 2:21 pm

BMI

SAT

9h 21m

2 stops

5:00 am - 2:16 pm

SAT

BMI

9h 16m

2 stops

$279American Airlines

Thu, Apr 16 - Sun, Apr 19

2:50 pm - 10:58 pm

PIA

SAT

8h 08m

1 stop

6:49 am - 2:08 pm

SAT

PIA

7h 19m

1 stop

$279United Airlines

Sat, Apr 4 - Thu, Apr 9

2:02 pm - 10:19 pm

MLI

SAT

8h 17m

2 stops

6:26 am - 12:21 pm

SAT

MLI

5h 55m

1 stop

$284American 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

$286Spirit Airlines

Tue, Apr 7 - Tue, Apr 14

4:03 pm - 10:59 pm

ORD

SAT

6h 56m

1 stop

6:49 am - 9:44 am

SAT

ORD

2h 55mnonstop

$287United Airlines

Useful Info

Low season	January
High season	March
Cheapest flight	$74

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

Most popular time to fly with an average 9% increase in price.

Flight from Chicago O'Hare Airport 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

$74 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