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Cheap flights from San Antonio to Illinois from $98

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.
Frontier Logo
1:31 pm - 12:53 amSAT  San Antonio-ORD Chicago O'Hare Intl
11h 22m1 stop Denver Intl
Frontier Logo
5:12 pm - 11:11 amORD  Chicago O'Hare Intl-SAT San Antonio
17h 59m1 stop Orlando
$316Frontier
Sat, Nov 21 - Tue, Nov 24
Frontier Logo
1:31 pm - 12:53 amSAT  San Antonio-ORD Chicago O'Hare Intl
11h 22m1 stop Denver Intl
Frontier Logo
6:40 am - 7:33 pmORD  Chicago O'Hare Intl-SAT San Antonio
12h 53m1 stop Denver Intl
$316Frontier
Sat, Nov 21 - Mon, Nov 23
Multiple Airlines Logo
9:25 am - 6:03 pmSAT  San Antonio-ORD Chicago O'Hare Intl
32h 38m2 stops Raleigh-Durham Atlanta Hartsfield-Jackson
Multiple Airlines Logo
7:00 am - 8:02 pmORD  Chicago O'Hare Intl-SAT San Antonio
13h 02m1 stop Denver Intl
$331Multiple Airlines
Thu, Dec 3 - Sun, Dec 6
Multiple Airlines Logo
9:50 am - 11:23 pmSAT  San Antonio-ORD Chicago O'Hare Intl
13h 33m2 stops Raleigh-Durham Atlanta Hartsfield-Jackson
Multiple Airlines Logo
6:21 am - 7:27 pmORD  Chicago O'Hare Intl-SAT San Antonio
13h 06m1 stop Denver Intl
$332Multiple Airlines
Thu, Jan 14 - Mon, Jan 18
American Airlines Logo
5:37 pm - 11:21 pmSAT  San Antonio-MLI Moline Quad-City
5h 44m1 stop Dallas/Fort Worth
American Airlines Logo
11:33 am - 4:52 pmMLI  Moline Quad-City-SAT San Antonio
5h 19m1 stop Dallas/Fort Worth
$349American Airlines
Mon, Nov 23 - Fri, Nov 27
Delta Logo
4:50 pm - 10:37 pmSAT  San Antonio-MLI Moline Quad-City
5h 47m1 stop Atlanta Hartsfield-Jackson
Delta Logo
5:35 am - 11:51 amMLI  Moline Quad-City-SAT San Antonio
6h 16m1 stop Atlanta Hartsfield-Jackson
$349Delta
Thu, Dec 24 - Fri, Jan 1
American Airlines Logo
4:34 pm - 12:07 amSAT  San Antonio-MLI Moline Quad-City
7h 33m2 stops Dallas/Fort Worth Chicago O'Hare Intl
American Airlines Logo
7:02 am - 12:08 pmMLI  Moline Quad-City-SAT San Antonio
5h 06m1 stop Dallas/Fort Worth
$354American Airlines
Mon, Nov 23 - Fri, Nov 27
United Airlines Logo
6:45 am - 9:43 amSAT  San Antonio-ORD Chicago O'Hare Intl
2h 58mnonstop
United Airlines Logo
7:45 pm - 10:59 pmORD  Chicago O'Hare Intl-SAT San Antonio
3h 14mnonstop
$379United Airlines
Tue, Dec 22 - Thu, Dec 31
United Airlines Logo
6:35 am - 9:32 amSAT  San Antonio-ORD Chicago O'Hare Intl
2h 57mnonstop
United Airlines Logo
9:25 am - 12:42 pmORD  Chicago O'Hare Intl-SAT San Antonio
3h 17mnonstop
$379United Airlines
Thu, Dec 10 - Fri, Dec 18
Southwest Logo
9:50 am - 12:20 pmSAT  San Antonio-MDW Chicago Midway
2h 30mnonstop
Southwest Logo
9:30 pm - 12:30 amMDW  Chicago Midway-SAT San Antonio
3h 00mnonstop
$379Southwest
Fri, Dec 25 - Tue, Dec 29

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Frontier flights from San Antonio to Illinois

Our best Frontier deals on San Antonio to Illinois flight tickets
Frontier
Nov 21
SAT1:31 pmSan Antonio
11h 22m
1 stop
ORD12:53 amChicago O'Hare Intl
Nov 24
ORD5:12 pmChicago O'Hare Intl
17h 59m
1 stop
SAT11:11 amSan Antonio
$316
Frontier
Dec 22
SAT11:48 amSan Antonio
18h 01m
1 stop
ORD5:49 amChicago O'Hare Intl
Jan 3
ORD7:35 amChicago O'Hare Intl
27h 18m
1 stop
SAT10:53 amSan Antonio
$317
Frontier
Nov 20
SAT8:28 pmSan Antonio
28h 25m
1 stop
ORD12:53 amChicago O'Hare Intl
Nov 22
ORD6:40 amChicago O'Hare Intl
12h 53m
1 stop
SAT7:33 pmSan Antonio
$318

American Airlines flights from San Antonio to Illinois

Our best American Airlines deals on San Antonio to Illinois flight tickets
American Airlines
Nov 23
SAT4:34 pmSan Antonio
7h 33m
2 stops
MLI12:07 amMoline Quad-City
Nov 27
MLI7:02 amMoline Quad-City
5h 06m
1 stop
SAT12:08 pmSan Antonio
$354
American Airlines
Nov 19
SAT6:00 amSan Antonio
4h 59m
1 stop
MLI10:59 amMoline Quad-City
Nov 22
MLI5:13 pmMoline Quad-City
6h 53m
1 stop
SAT12:06 amSan Antonio
$374
American Airlines
Dec 1
SAT7:09 amSan Antonio
2h 56m
ORD10:05 amChicago O'Hare Intl
Jan 5
ORD4:59 pmChicago O'Hare Intl
2h 59m
SAT7:58 pmSan Antonio
$379

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 AntonioChicago

SAT San Antonio - ORD Chicago O'Hare Intl

SATORD

San Antonio

Sat 11/21

1:31 pm-12:53 am

1 stop11h 22m

Chicago O'Hare Intl

Tue 11/24

5:12 pm-11:11 am

1 stop17h 59m

$316

San AntonioChicago

SAT San Antonio - ORD Chicago O'Hare Intl

SATORD

San Antonio

Sat 11/21

1:31 pm-12:53 am

1 stop11h 22m

Chicago O'Hare Intl

Mon 11/23

6:40 am-7:33 pm

1 stop12h 53m

$316

San AntonioChicago

SAT San Antonio - ORD Chicago O'Hare Intl

SATORD

San Antonio

Thu 12/3

9:25 am-6:03 pm

2 stops32h 38m

Chicago O'Hare Intl

Sun 12/6

7:00 am-8:02 pm

1 stop13h 02m

$331

San AntonioChicago

SAT San Antonio - ORD Chicago O'Hare Intl

SATORD

San Antonio

Thu 1/14

9:50 am-11:23 pm

2 stops13h 33m

Chicago O'Hare Intl

Mon 1/18

6:21 am-7:27 pm

1 stop13h 06m

$332

San AntonioMoline

SAT San Antonio - MLI Moline Quad-City

SATMLI

San Antonio

Mon 11/23

5:37 pm-11:21 pm

1 stop5h 44m

Moline Quad-City

Fri 11/27

11:33 am-4:52 pm

1 stop5h 19m

$349

San AntonioMoline

SAT San Antonio - MLI Moline Quad-City

SATMLI

San Antonio

Thu 12/24

4:50 pm-10:37 pm

1 stop5h 47m

Moline Quad-City

Fri 1/1

5:35 am-11:51 am

1 stop6h 16m

$349

San AntonioMoline

SAT San Antonio - MLI Moline Quad-City

SATMLI

San Antonio

Mon 11/23

4:34 pm-12:07 am

2 stops7h 33m

Moline Quad-City

Fri 11/27

7:02 am-12:08 pm

1 stop5h 06m

$354

San AntonioChicago

SAT San Antonio - ORD Chicago O'Hare Intl

SATORD

San Antonio

Tue 12/22

6:45 am-9:43 am

Nonstop2h 58m

Chicago O'Hare Intl

Thu 12/31

7:45 pm-10:59 pm

Nonstop3h 14m

$379

San AntonioChicago

SAT San Antonio - ORD Chicago O'Hare Intl

SATORD

San Antonio

Thu 12/10

6:35 am-9:32 am

Nonstop2h 57m

Chicago O'Hare Intl

Fri 12/18

9:25 am-12:42 pm

Nonstop3h 17m

$379
Quickest round-trip

San AntonioChicago

SAT San Antonio - MDW Chicago Midway

SATMDW

San Antonio

Fri 12/25

9:50 am-12:20 pm

Nonstop2h 30m

Chicago Midway

Tue 12/29

9:30 pm-12:30 am

Nonstop3h 00m

$379

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 $356, 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 $481. Flights from San Antonio to Illinois on a Sunday will generally be more expensive and average around $849. 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 $751.

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 $409 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

$98

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 $98. The best round-trip flight deal from San Antonio to Illinois found on momondo in the last 72 hours is $316.
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 O'Hare Intl (ORD), Chicago Midway (MDW).
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
5.5
2,511 reviews
Search Frontier flights
American AirlinesPriceFrom $237Free CancellationRating
7.0
12,228 reviews
Search American Airlines flights
United AirlinesPriceFrom $277Free CancellationRating
7.3
10,461 reviews
Search United Airlines flights
DeltaPriceFrom $306Free CancellationRating
7.8
8,700 reviews
Search Delta flights
SouthwestPriceFrom $315Free CancellationRating
8.0
4,214 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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