Cheap Flights from San Antonio, TX to Chicago, IL from $91

Return flight: Chicago – San Antonio

On Cheapflightsplus.com you will find 7 direct and 511 connecting flights from San Antonio to Chicago. You can compare airfare deals from 6 airlines and multiple travel sites from $91, book and save on cheap plane tickets and last minute offers. Also check out SAT-CHI flight schedule to find best flight time, convenient departure and arrival airports.

Find One-Way and Round-Trip San Antonio to Chicago Flight Deals

To find the cheapest one way airline ticket select the date with the lowest price on the calendar below and click «Find Flights». To search for round-trip flight deals click on the link «Check prices for return flights» and select the date of the return flight. Cheapest flights in November: $91 (one-way), $156 (round-trip).
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Full flight schedule will help you in detecting at what time planes fly from San Antonio to Chicago. You can also specify the concrete flights and airlines on the route and how long the flight actually is. Use the calendar for today, tomorrow or other specific date as some flights are available only on certain days of the week.
Departure Arrival Flight Details Flight Duration Price
06:30 — 09:29
06:30 — 09:29 UA2008 United Airlines
San Antonio — Chicago
2h 59m
Find flight
from$201
06:40 — 09:37
06:40 — 09:37 UA2629 United Airlines
San Antonio — Chicago
2h 57m
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from$201
06:48 — 09:48
06:48 — 09:48 UA1332 United Airlines
San Antonio — Chicago
3h
Find flight
from$199
12:57 — 15:52
12:57 — 15:52 UA1905 United Airlines
San Antonio — Chicago
2h 55m
Find flight
from$199
14:10 — 17:08
14:10 — 17:08 UA2243 United Airlines
San Antonio — Chicago
2h 58m
Find flight
from$199
17:08 — 19:59
17:08 — 19:59 UA697 United Airlines
San Antonio — Chicago
2h 51m
Find flight
from$199
17:08 — 20:10
17:08 — 20:10 UA5869 United Airlines
San Antonio — Chicago
3h 2m
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from$210
05:20 — 14:15
05:20 — 09:06 NK447 Spirit Airlines
San Antonio — Orlando
3h 2m stop
12:08 — 14:15 NK3201 Spirit Airlines
Orlando — Chicago
8h 55m
including layover
Find flight
from$107
05:20 — 18:43
05:20 — 09:06 NK447 Spirit Airlines
San Antonio — Orlando
7h 27m stop
16:33 — 18:43 NK506 Spirit Airlines
Orlando — Chicago
13h 23m
including layover
Find flight
from$107
06:00 — 14:16
06:00 — 06:44 NK1059 Spirit Airlines
San Antonio — Las Vegas
1h 48m stop
08:32 — 14:16 NK187 Spirit Airlines
Las Vegas — Chicago
8h 16m
including layover
Find flight
from$154
07:00 — 11:36
+1 day
07:00 — 08:16 NK2700 Spirit Airlines
San Antonio — Los Angeles
21h 14m stop
05:30 — 11:36 NK2192 Spirit Airlines
Los Angeles — Chicago
28h 36m
including layover
Find flight
from$138
08:33 — 15:31
08:33 — 12:17 NK1359 Spirit Airlines
San Antonio — Orlando
1h 6m stop
13:23 — 15:31 NK1369 Spirit Airlines
Orlando — Chicago
6h 58m
including layover
Find flight
from$154
08:33 — 17:17
08:33 — 12:17 NK1359 Spirit Airlines
San Antonio — Orlando
2h 51m stop
15:08 — 17:17 NK1114 Spirit Airlines
Orlando — Chicago
8h 44m
including layover
Find flight
from$154
10:16 — 23:31
10:42 — 14:32 F91654 Frontier Airlines
San Antonio — Orlando
6h 56m stop
22:17 — 00:20 F92791 Frontier Airlines
Orlando — Chicago
13h 15m
including layover
Find flight
from$132
10:42 — 20:17
10:42 — 14:32 F91654 Frontier Airlines
San Antonio — Orlando
3h 48m stop
18:20 — 20:17 F93853 Frontier Airlines
Orlando — Chicago
9h 35m
including layover
Find flight
from$107
12:09 — 22:28
12:09 — 15:34 NK1197 Spirit Airlines
San Antonio — Atlanta
5h 45m stop
21:19 — 22:28 NK1200 Spirit Airlines
Atlanta — Chicago
10h 19m
including layover
Find flight
from$98
14:50 — 23:31
14:50 — 16:02 NK849 Spirit Airlines
San Antonio — Los Angeles
1h 22m stop
17:24 — 23:31 NK3010 Spirit Airlines
Los Angeles — Chicago
8h 41m
including layover
Find flight
from$117
14:55 — 23:53
14:55 — 16:23 F92355 Frontier Airlines
San Antonio — Denver
3h 59m stop
20:22 — 23:53 F93172 Frontier Airlines
Denver — Chicago
8h 58m
including layover
Find flight
from$112
15:56 — 14:56
+1 day
14:18 — 15:18 F93417 Frontier Airlines
San Antonio — Las Vegas
16h 30m stop
09:25 — 15:00 F92330 Frontier Airlines
Las Vegas — Chicago
23h
including layover
Find flight
from$125
15:56 — 20:56
+1 day
14:18 — 15:18 F93417 Frontier Airlines
San Antonio — Las Vegas
22h 11m stop
15:03 — 20:53 F92146 Frontier Airlines
Las Vegas — Chicago
29h
including layover
Find flight
from$125
17:38 — 23:18
12:27 — 16:04 F94810 Frontier Airlines
San Antonio — Atlanta
1h stop
21:12 — 22:14 F92779 Frontier Airlines
Atlanta — Chicago
5h 40m
including layover
Find flight
from$104
17:38 — 23:59
12:27 — 16:04 F94810 Frontier Airlines
San Antonio — Atlanta
1h 28m stop
22:58 — 00:17 F93397 Frontier Airlines
Atlanta — Chicago
6h 21m
including layover
Find flight
from$104
18:13 — 15:33
+1 day
18:03 — 20:11 NK2039 Spirit Airlines
San Antonio — Nashville
17h 4m stop
14:28 — 16:25 NK2028 Spirit Airlines
Nashville — Chicago
21h 20m
including layover
Find flight
from$91
18:59 — 15:14
+1 day
18:59 — 20:29 F92097 Frontier Airlines
San Antonio — Denver
15h 9m stop
11:38 — 15:14 F91484 Frontier Airlines
Denver — Chicago
20h 15m
including layover
Find flight
from$132
19:36 — 20:53
+1 day
19:36 — 21:04 F92355 Frontier Airlines
San Antonio — Denver
20h 22m stop
17:26 — 20:53 F92210 Frontier Airlines
Denver — Chicago
25h 17m
including layover
Find flight
from$125
19:50 — 23:59
+1 day
19:36 — 21:04 F92355 Frontier Airlines
San Antonio — Denver
23h 6m stop
20:22 — 23:52 F93174 Frontier Airlines
Denver — Chicago
28h 9m
including layover
Find flight
from$121
20:12 — 23:59
+1 day
20:12 — 21:45 F92097 Frontier Airlines
San Antonio — Denver
22h 36m stop
20:21 — 23:59 F93174 Frontier Airlines
Denver — Chicago
27h 47m
including layover
Find flight
from$124
20:48 — 07:04
+1 day
20:48 — 00:16 NK1357 Spirit Airlines
San Antonio — Atlanta
5h 44m stop
06:00 — 07:04 NK1116 Spirit Airlines
Atlanta — Chicago
10h 16m
including layover
Find flight
from$108
22:57 — 10:50
+1 day
22:51 — 23:48 NK2702 Spirit Airlines
San Antonio — Las Vegas
5h 18m stop
05:15 — 10:55 NK2619 Spirit Airlines
Las Vegas — Chicago
11h 53m
including layover
Find flight
from$154
07:05 — 08:55
+1 day
07:05 — 10:51 NK2228 Spirit Airlines
San Antonio — Miami
1h 25m stop
12:16 — 14:14 NK2346 Spirit Airlines
Miami — Atlanta
17h 34m stop
07:48 — 08:55 NK2707 Spirit Airlines
Atlanta — Chicago
25h 50m
including layover
Find flight
from$147
09:00 — 07:04
+1 day
09:00 — 13:12 NK1192 Spirit Airlines
San Antonio — Detroit
7h 49m stop
21:01 — 23:12 NK1377 Spirit Airlines
Detroit — Atlanta
6h 48m stop
06:00 — 07:04 NK1116 Spirit Airlines
Atlanta — Chicago
22h 4m
including layover
Find flight
from$158
12:09 — 08:38
+1 day
12:09 — 15:34 NK1197 Spirit Airlines
San Antonio — Atlanta
7h 11m stop
22:45 — 00:34 NK1911 Spirit Airlines
Atlanta — Baltimore
7h 4m stop
07:38 — 08:38 NK2439 Spirit Airlines
Baltimore — Chicago
20h 29m
including layover
Find flight
from$151
13:27 — 00:05
+1 day
13:27 — 16:49 NK2172 Spirit Airlines
San Antonio — Atlanta
2h 27m stop
19:16 — 21:11 NK2061 Spirit Airlines
Atlanta — Miami
41m stop
21:52 — 00:05 NK1 Spirit Airlines
Miami — Chicago
10h 38m
including layover
Find flight
from$108
13:27 — 23:29
+1 day
13:27 — 16:49 NK2172 Spirit Airlines
San Antonio — Atlanta
22h 30m stop
15:19 — 16:50 NK2460 Spirit Airlines
Atlanta — Orlando
4h 35m stop
21:25 — 23:29 NK2190 Spirit Airlines
Orlando — Chicago
34h 2m
including layover
Find flight
from$108
22:57 — 15:33
+1 day
22:51 — 23:48 NK2702 Spirit Airlines
San Antonio — Las Vegas
38m stop
00:27 — 05:55 NK2250 Spirit Airlines
Las Vegas — Nashville
7h 33m stop
14:28 — 16:25 NK2028 Spirit Airlines
Nashville — Chicago
16h 36m
including layover
Find flight
from$139
*Departure and arrival times - local. Updated on July 30, 2025

Flight Information

Below we will explain in detail what the flights cost on the destination from San Antonio to Chicago depends on and how to choose the most interesting flight option for you.

Distance between San Antonio and Chicago is 1684 miles. Time difference between the cities is 0h. Airplanes depart 05:00 to 22:57 from 5 San Antonio airports and arrive 05:00 to 22:57 to 7 Chicago airports. Average flight time is 2h 58m.

  • The fastest flight 2h 51m
  • Average flight time 2h 58m
  • The earliest flight 05:00
  • The latest flight 22:57
  • Distance 1047 ml

The cheapest months to travel to Chicago are june (from 91 $), july (from 98 $), august (from 98 $).

The most expensive months are september (from 112 $), may (from 107 $), october (from 107 $).

What is the lowest airfare San Antonio to Chicago?

The cheapest plane ticket found by our users is $91. This airfare is for economy class on one-way NK2039 flight by Spirit Airlines for July 6, 2025 which leaves San Antonio in San Antonio at 18:13 am and arrives at Chicago O'Hare International at 15:33.

Economy class
$91
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Business class
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First class
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Popular Airlines on the Route

The flight San Antonio — Chicago is served by 6 regular airlines and 3 low-cost airlines. Most of the flights on this route are operated by Alaska Airlines - 16 departures per week at the price of from $ 217 . And the most expensive tickets are offered by United Airlines airline - from $ 1193.

Direct flights

There are 7 nonstop flights on the route. The fastest direct flight is UA697 by United Airlines takes 2h 51m and the cheapest is NK2039 by Spirit Airlines for $199.

  • UA - United Airlines
    from $199
    Find
See more direct flights

Connecting Flights

There are 511 flights with layovers on the route. The fastest connecting flight is UA6298 by United Airlines takes 4h 40m and the cheapest is NK2039 by Spirit Airlines for $91.

  • AS - Alaska Airlines
    from $217
    Find
  • F9 - Frontier Airlines
    from $104
    Find
  • SY - Sun Country Airlines
    from $153
    Find
  • HA - Hawaiian Airlines
    from $214
    Find
  • UA - United Airlines
    from $203
    Find
  • NK - Spirit Airlines
    from $91
    Find
See more connecting flights

Airports

You can fly from San Antonio to Chicago from 5 airports (Randolph AFB, Martindale AAF, San Antonio, Kelly AFB, Stinson Municipal).

San Antonio airports

  • Randolph AFB-RND
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  • Martindale AAF-MDA
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  • San Antonio-SAT
    from $91
    Find
  • Kelly AFB-SKF
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  • Stinson Municipal-SSF
    Find

Chicago airports

  • O'Hare International-ORD
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  • Midway-MDW
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  • Dupage County-DPA
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  • Chicago FSS-CHI
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  • Merrill C Meigs (closed)-CGX
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  • Pal-Waukee-PWK
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  • Chicago NAS-NOH
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How to book a plane ticket yourself?

How to book an air ticket yourself?
  • Fill in the search parameters — cities of departure and destination, departure and return dates and click «Find flights»
  • Select the best flight that you like. Please, check the airports of departure and arrival. Select the best fare, but pay attention to the following flight details - airports of departure and arrival, flight duration and layovers. Please use filters and sort to find the best flight.
  • Click «Buy» when you are ready — our system will redirect you to the site that sells the selected flight ticket.
  • Fill in all passenger and payment information — passport and contact information, please double check all passengers’ names and make a payment for your itinerary.
  • That's it — you will receive an email with your e-ticket usually within 10 minutes after your flight is confirmed. Please, print the e-ticket and have it with you at the airport. You would need to have only a passport and/or a required form of ID to travel. Please, check your Visa requirements if you travel outside of the United States or Canada.

    To find a plane ticket, please select dates.

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