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$50 Find cheap flights from Illinois to San Antonio

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight to San Antonio departing on 6/4. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
sáb. 6/15
sáb. 6/22

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In the last 7 days travelers have searched 42,211,976 times on KAYAK, and here is why:

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Good to know

Low season

September

High season

April

Cheapest flight

$50
Best time to beat the crowds with an average 17% drop in price.
Most popular time to fly with an average 15% increase in price.
Flight from Chicago O'Hare Airport to San Antonio

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.

See more FAQs

Prefer to fly non-stop from Illinois to San Antonio?

Find which airlines fly direct from Illinois to San Antonio, which days they fly and book direct flights.

Nonstop departures

Illinois to San Antonio

Monday

ANA, Aer Lingus, Aeromexico, +37 more

ANA, Aer Lingus, +38 more

Tuesday

ANA, Aer Lingus, Aeromexico, +34 more

ANA, Aer Lingus, +35 more

Wednesday

ANA, Aer Lingus, Aeromexico, +34 more

ANA, Aer Lingus, +35 more

Thursday

ANA, Aer Lingus, Aeromexico, +35 more

ANA, Aer Lingus, +36 more

Friday

ANA, Aer Lingus, Aeromexico, +37 more

ANA, Aer Lingus, +38 more

Saturday

ANA, Aer Lingus, Aeromexico, +34 more

ANA, Aer Lingus, +35 more

Sunday

ANA, Aer Lingus, Aeromexico, +35 more

ANA, Aer Lingus, +36 more

See more direct flights

Nonstop returns

San Antonio to Illinois

Monday

ANA, Aer Lingus, Aeromexico, +37 more

ANA, Aer Lingus, +38 more

Tuesday

ANA, Aer Lingus, Aeromexico, +34 more

ANA, Aer Lingus, +35 more

Wednesday

ANA, Aer Lingus, Aeromexico, +34 more

ANA, Aer Lingus, +35 more

Thursday

ANA, Aer Lingus, Aeromexico, +35 more

ANA, Aer Lingus, +36 more

Friday

ANA, Aer Lingus, Aeromexico, +37 more

ANA, Aer Lingus, +38 more

Saturday

ANA, Aer Lingus, Aeromexico, +34 more

ANA, Aer Lingus, +35 more

Sunday

ANA, Aer Lingus, Aeromexico, +35 more

ANA, Aer Lingus, +36 more

See more direct flights
See more direct flights

Book cheap flights from Illinois to San Antonio

Recent round-trip flight deals

9/10mar.
1 stopSpirit Airlines
13h 47mORD-SAT
9/18mié.
1 stopSpirit Airlines
11h 37mSAT-ORD
$106
6/5mié.
1 stopFrontier
21h 15mORD-SAT
6/8sáb.
1 stopFrontier
6h 04mSAT-ORD
$142
5/29mié.
1 stop
7h 31mORD-SAT
5/31vie.
1 stop
30h 40mSAT-ORD
$143
6/4mar.
1 stop
10h 30mORD-SAT
6/12mié.
1 stop
26h 06mSAT-ORD
$145
9/4mié.
1 stopDelta
5h 00mMLI-SAT
9/7sáb.
1 stopDelta
5h 05mSAT-MLI
$216
9/18mié.
1 stopUnited Airlines
5h 17mMLI-SAT
9/23lun.
1 stopUnited Airlines
7h 08mSAT-MLI
$253
5/31vie.
1 stopAmerican Airlines
7h 50mORD-SAT
6/4mar.
nonstopAmerican Airlines
2h 47mSAT-ORD
$263
8/13mar.
1 stopDelta
7h 59mBMI-SAT
8/17sáb.
1 stopDelta
5h 05mSAT-BMI
$268
9/4mié.
1 stopUnited Airlines
7h 14mMLI-SAT
9/7sáb.
2 stopsUnited Airlines
11h 52mSAT-MLI
$281
6/15sáb.
1 stopAmerican Airlines
7h 40mBMI-SAT
6/18mar.
1 stopAmerican Airlines
6h 01mSAT-BMI
$288

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Recent one-way flight deals

6/4mar.
1 stopSpirit Airlines
10h 30mORD-SAT
$50
6/5mié.
1 stopFrontier
24h 21mORD-SAT
$68
5/29mié.
2 stopsSpirit Airlines
16h 55mORD-SAT
$73
8/11dom.
1 stopSun Country Air
20h 57mORD-SAT
$148
6/4mar.
nonstopAmerican Airlines
2h 52mORD-SAT
$152
5/29mié.
1 stopDelta
4h 57mMDW-SAT
$161
5/31vie.
3 stops
23h 45mORD-SAT
$165
6/12mié.
3 stops
15h 56mORD-SAT
$167
7/2mar.
1 stopDelta
7h 13mMDW-SAT
$176
8/19lun.
nonstopAmerican Airlines
2h 52mORD-SAT
$191

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Last minute flights from Illinois to San Antonio

Last minute flight, train and bus deals

5/21mar.
multi-stop
17h 54mORD-SAT
5/27lun.
multi-stop
8h 10mSAT-ORD
$181
5/18sáb.
multi-stop
10h 30mORD-SAT
5/22mié.
multi-stop
12h 18mSAT-ORD
$195
5/21mar.
multi-stopFrontier
27h 36mSTL-SAT
5/25sáb.
multi-stopFrontier
21h 23mSAT-STL
$199
5/17vie.
multi-stopFrontier
15h 50mORD-SAT
5/31vie.
multi-stopFrontier
28h 05mSAT-ORD
$209
5/18sáb.
multi-stopDelta
6h 04mMLI-SAT
6/1sáb.
multi-stopDelta
5h 16mSAT-MLI
$290
5/20lun.
multi-stopSpirit Airlines
11h 28mORD-SAT
5/27lun.
multi-stopSpirit Airlines
8h 10mSAT-ORD
$347
5/18sáb.
multi-stopUnited Airlines
9h 59mMLI-SAT
6/1sáb.
multi-stopUnited Airlines
7h 03mSAT-MLI
$365
5/21mar.
multi-stopSpirit Airlines
22h 43mORD-SAT
5/27lun.
multi-stopSpirit Airlines
8h 10mSAT-ORD
$373
5/21mar.
multi-stopDelta
7h 25mMLI-SAT
5/25sáb.
multi-stopDelta
5h 35mSAT-MLI
$396
5/21mar.
multi-stopUnited Airlines
9h 55mMLI-SAT
5/25sáb.
multi-stopUnited Airlines
7h 48mSAT-MLI
$420

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Flights to San Antonio