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Cheap flights from San Antonio to Illinois from $87

1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from San Antonio to Illinois

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
6:35 am - 1:32 pmSAT  San Antonio-STL Lambert-St Louis
6h 57m1 stop Salt Lake City
Delta Logo
2:20 pm - 12:23 amSTL  Lambert-St Louis-SAT San Antonio
10h 03m1 stop Salt Lake City
$173Delta
Thu, Nov 5 - Mon, Nov 9
Delta Logo
5:30 am - 10:55 amSAT  San Antonio-STL Lambert-St Louis
5h 25m1 stop Atlanta Hartsfield-Jackson
Delta Logo
10:00 am - 5:25 pmSTL  Lambert-St Louis-SAT San Antonio
7h 25m1 stop Atlanta Hartsfield-Jackson
$173Delta
Sun, Nov 8 - Wed, Nov 11
Frontier Logo
8:20 pm - 12:21 amSAT  San Antonio-ORD Chicago O'Hare Intl
28h 01m1 stop Denver Intl
Frontier Logo
6:30 am - 7:25 pmORD  Chicago O'Hare Intl-SAT San Antonio
12h 55m1 stop Denver Intl
$279Frontier
Thu, Oct 29 - Wed, Nov 4
Frontier Logo
8:20 pm - 12:21 amSAT  San Antonio-ORD Chicago O'Hare Intl
28h 01m1 stop Denver Intl
Frontier Logo
6:30 am - 7:25 pmORD  Chicago O'Hare Intl-SAT San Antonio
12h 55m1 stop Denver Intl
$279Frontier
Mon, Nov 2 - Wed, Nov 4
United Airlines Logo
6:34 am - 9:32 amSAT  San Antonio-ORD Chicago O'Hare Intl
2h 58mnonstop
United Airlines Logo
9:05 am - 12:20 pmORD  Chicago O'Hare Intl-SAT San Antonio
3h 15mnonstop
$281United Airlines
Wed, Nov 11 - Mon, Dec 14
United Airlines Logo
6:35 am - 9:35 amSAT  San Antonio-ORD Chicago O'Hare Intl
3h 00mnonstop
United Airlines Logo
7:50 pm - 10:50 pmORD  Chicago O'Hare Intl-SAT San Antonio
3h 00mnonstop
$281United Airlines
Mon, Oct 5 - Wed, Oct 7
Southwest Logo
3:00 pm - 5:35 pmSAT  San Antonio-MDW Chicago Midway
2h 35mnonstop
Southwest Logo
8:50 pm - 11:40 pmMDW  Chicago Midway-SAT San Antonio
2h 50mnonstop
$281Southwest
Wed, Nov 11 - Mon, Dec 14
Southwest Logo
2:50 pm - 8:25 pmSAT  San Antonio-MDW Chicago Midway
5h 35m1 stop Atlanta Hartsfield-Jackson
Southwest Logo
3:10 pm - 8:40 pmMDW  Chicago Midway-SAT San Antonio
5h 30m1 stop Dallas Love Field
$281Southwest
Wed, Nov 4 - Tue, Nov 10
American Airlines Logo
2:05 pm - 6:20 pmSAT  San Antonio-STL Lambert-St Louis
4h 15m1 stop Dallas/Fort Worth
American Airlines Logo
5:40 am - 9:46 amSTL  Lambert-St Louis-SAT San Antonio
4h 06m1 stop Dallas/Fort Worth
$291American Airlines
Sat, Oct 17 - Sat, Oct 24
American Airlines Logo
7:10 am - 10:10 amSAT  San Antonio-ORD Chicago O'Hare Intl
3h 00mnonstop
American Airlines Logo
3:50 pm - 8:35 pmORD  Chicago O'Hare Intl-SAT San Antonio
4h 45m1 stop Dallas/Fort Worth
$291American Airlines
Wed, Oct 21 - Mon, Oct 26

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United Airlines flights from San Antonio to Illinois

Our best United Airlines deals on San Antonio to Illinois flight tickets
United Airlines
Oct 5
SAT6:35 amSan Antonio
3h 00m
ORD9:35 amChicago O'Hare Intl
Oct 7
ORD7:50 pmChicago O'Hare Intl
3h 00m
SAT10:50 pmSan Antonio
$281
United Airlines
Oct 5
SAT4:50 pmSan Antonio
5h 56m
1 stop
ORD10:46 pmChicago O'Hare Intl
Oct 7
ORD1:30 pmChicago O'Hare Intl
3h 01m
SAT4:31 pmSan Antonio
$291
United Airlines
Oct 20
SAT7:25 pmSan Antonio
4h 58m
1 stop
ORD12:23 amChicago O'Hare Intl
Oct 21
ORD5:30 amChicago O'Hare Intl
5h 13m
1 stop
SAT10:43 amSan Antonio
$296

Delta flights from San Antonio to Illinois

Our best Delta deals on San Antonio to Illinois flight tickets
Delta
Nov 5
SAT6:35 amSan Antonio
6h 57m
1 stop
STL1:32 pmLambert-St Louis
Nov 9
STL2:20 pmLambert-St Louis
10h 03m
1 stop
SAT12:23 amSan Antonio
$173
Delta
Oct 15
SAT6:50 amSan Antonio
6h 30m
1 stop
STL1:20 pmLambert-St Louis
Oct 19
STL5:35 pmLambert-St Louis
6h 58m
1 stop
SAT12:33 amSan Antonio
$177
Delta
Nov 7
SAT5:15 amSan Antonio
5h 14m
1 stop
ORD10:29 amChicago O'Hare Intl
Nov 7
ORD3:40 pmChicago O'Hare Intl
7h 46m
1 stop
SAT11:26 pmSan Antonio
$291

momondo Fare Finder

 
Use the filters below to find and compare flights from San Antonio to Illinois that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

San AntonioSt. Louis

SAT San Antonio - STL Lambert-St Louis

SATSTL

San Antonio

Thu 11/5

6:35 am-1:32 pm

1 stop6h 57m

Lambert-St Louis

Mon 11/9

2:20 pm-12:23 am

1 stop10h 03m

$173

San AntonioSt. Louis

SAT San Antonio - STL Lambert-St Louis

SATSTL

San Antonio

Sun 11/8

5:30 am-10:55 am

1 stop5h 25m

Lambert-St Louis

Wed 11/11

10:00 am-5:25 pm

1 stop7h 25m

$173

San AntonioChicago

SAT San Antonio - ORD Chicago O'Hare Intl

SATORD

San Antonio

Thu 10/29

8:20 pm-12:21 am

1 stop28h 01m

Chicago O'Hare Intl

Wed 11/4

6:30 am-7:25 pm

1 stop12h 55m

$279

San AntonioChicago

SAT San Antonio - ORD Chicago O'Hare Intl

SATORD

San Antonio

Mon 11/2

8:20 pm-12:21 am

1 stop28h 01m

Chicago O'Hare Intl

Wed 11/4

6:30 am-7:25 pm

1 stop12h 55m

$279

San AntonioChicago

SAT San Antonio - ORD Chicago O'Hare Intl

SATORD

San Antonio

Wed 11/11

6:34 am-9:32 am

Nonstop2h 58m

Chicago O'Hare Intl

Mon 12/14

9:05 am-12:20 pm

Nonstop3h 15m

$281

San AntonioChicago

SAT San Antonio - ORD Chicago O'Hare Intl

SATORD

San Antonio

Mon 10/5

6:35 am-9:35 am

Nonstop3h 00m

Chicago O'Hare Intl

Wed 10/7

7:50 pm-10:50 pm

Nonstop3h 00m

$281
Quickest round-trip

San AntonioChicago

SAT San Antonio - MDW Chicago Midway

SATMDW

San Antonio

Wed 11/11

3:00 pm-5:35 pm

Nonstop2h 35m

Chicago Midway

Mon 12/14

8:50 pm-11:40 pm

Nonstop2h 50m

$281

San AntonioChicago

SAT San Antonio - MDW Chicago Midway

SATMDW

San Antonio

Wed 11/4

2:50 pm-8:25 pm

1 stop5h 35m

Chicago Midway

Tue 11/10

3:10 pm-8:40 pm

1 stop5h 30m

$281

San AntonioSt. Louis

SAT San Antonio - STL Lambert-St Louis

SATSTL

San Antonio

Sat 10/17

2:05 pm-6:20 pm

1 stop4h 15m

Lambert-St Louis

Sat 10/24

5:40 am-9:46 am

1 stop4h 06m

$291

San AntonioChicago

SAT San Antonio - ORD Chicago O'Hare Intl

SATORD

San Antonio

Wed 10/21

7:10 am-10:10 am

Nonstop3h 00m

Chicago O'Hare Intl

Mon 10/26

3:50 pm-8:35 pm

1 stop4h 45m

$291

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Illinois from

How to get the cheapest flight ticket from San Antonio to Illinois

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Illinois?

The cheapest month to fly to Illinois from San Antonio is in February. Flight prices, which tend to average around $347, are often lower during this time because this is during the off-season. If you aren’t able to travel to Illinois during the month of February, then flying in April is also cheap. Prices for this month can be found on momondo for an average of $366.

What is the cheapest day to depart on your flight to Illinois?

The cheapest day to depart from San Antonio to Illinois is on a Thursday when prices can be found for as low as $480. Flights from San Antonio to Illinois on a Sunday will generally be more expensive and average around $791. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Illinois?

Our most recent data shows that the best time of day to fly to Illinois is in the evening. Flights from San Antonio to Illinois during this time can be as low as $408. Flights at noon are often more expensive with an average ticket price of $762.

What is the cheapest San Antonio to Illinois flight route?

Fly from San Antonio to Chicago O'Hare Intl for the best San Antonio - Illinois flight prices

How far in advance should I book a flight from San Antonio to Illinois?

You are more likely to see cheaper flights to Illinois from San Antonio when booking weeks ahead of your departure date. In general, you can expect to find flights to Illinois for around $405 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Illinois from San Antonio for as low as $297 on momondo.

What cabin class options are available on San Antonio to Illinois flights?

There are 4 cabin classes available to choose from on San Antonio to Illinois flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on San Antonio to Illinois flights?

You could potentially save up to 1% on your flight if you consider stops on a San Antonio to Illinois flight.

Cheap San Antonio to Illinois flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from San Antonio to Illinois

Best Price Found

$87

Fastest flight time

2h 00m

Direct flights

Every day

Airports in Illinois

98 airports
The best one-way flight to Illinois from San Antonio in the past 72 hours is $87. The best round-trip flight deal from San Antonio to Illinois found on momondo in the last 72 hours is $173.
The fastest flight from San Antonio to Illinois takes 2h 00m
Direct flights go from San Antonio to Illinois every day.
There are 98 airports in Illinois. From San Antonio there are direct flights to Chicago Midway (MDW), Lambert-St Louis (STL).
Search flight deals

Frequently asked questions about flying from San Antonio to Illinois

  • When did momondo last update prices for flights from San Antonio Airport to Illinois?

    Prices for flights from San Antonio Airport to Illinois are updated daily.

  • How many operators does momondo search for flights from San Antonio Airport to Illinois?

  • How old do you have to be to fly from San Antonio Airport to Illinois?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from San Antonio Airport to Illinois.

  • What documentation or ID do you need to fly to Illinois?

    The necessary travel and health documents for your Illinois trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from San Antonio to Illinois?

Best airlines flying from San Antonio to Illinois

Compare and see reviews for airlines that fly from San Antonio to Illinois with momondo
Airline
Rating
Free Cancellation
Price
FrontierPriceFrom $131Free CancellationRating
5.6
2,588 reviews
Search Frontier flights
American AirlinesPriceFrom $237Free CancellationRating
7.0
12,073 reviews
Search American Airlines flights
United AirlinesPriceFrom $287Free CancellationRating
7.4
10,226 reviews
Search United Airlines flights
DeltaPriceFrom $306Free CancellationRating
7.8
8,591 reviews
Search Delta flights
SouthwestPriceFrom $313Free CancellationRating
8.0
4,192 reviews
Search Southwest flights

Why use momondo?

Why should I use momondo to find a flight deal from San Antonio to Illinois?

It is quick and easy to find San Antonio to Illinois flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Illinois that suits you.

Can I find flights from San Antonio to Illinois with flexible booking policies on momondo?

Flights from San Antonio to Illinois with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from San Antonio to Illinois?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Illinois from San Antonio.

I’m not ready to book a flight from San Antonio to Illinois right now. Can momondo alert me if prices change?

Of course. momondo tracks the price of San Antonio to Illinois flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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