Cheap Flights from Chicago, IL to San Antonio, TX from $94
Return flight: San Antonio – Chicago
On Cheapflightsplus.com you will find 7 direct and 500 connecting flights from Chicago to San Antonio. You can compare airfare deals from 7 airlines and multiple travel sites from $94, book and save on cheap plane tickets and last minute offers. Also check out CHI-SAT flight schedule to find best flight time, convenient departure and arrival airports.
Find One-Way and Round-Trip Chicago to San Antonio 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: $94 (one-way), $161 (round-trip).
Direct flights
Check prices for return flight
Best Flights from Chicago to San Antonio Today
Take a look at the list of non stop flights and flights with layovers from Chicago to San Antonio with the lowest price of $94. The fastest direct flight takes 2h 54m and the fastest connecting – 4h 37m.
| Price | Departure | Arrival | Flight Duration | Airline | Flight |
|---|---|---|---|---|---|
| from $198 | 19:59 Chicago O'Hare International | 22:57 San Antonio San Antonio | 2h 58m | United Airlines | UA658 |
| from $476 | 09:23 Chicago O'Hare International | 12:23 San Antonio San Antonio | 3h 0m | United Airlines | UA1851 |
| from $94 | 06:00 Chicago O'Hare International | 11:14 San Antonio San Antonio | 5h 14m layover 0h 55m - Atlanta | Spirit Airlines | NK1195 NK1196 |
| from $94 | 18:01 Chicago O'Hare International | 23:38 San Antonio San Antonio | 5h 37m layover 1h 5m - Atlanta | Spirit Airlines | NK1115 NK1358 |
| from $104 | 05:10 Chicago O'Hare International | 11:42 San Antonio San Antonio | 6h 32m layover 1h 42m - Atlanta | Frontier Airlines | F91596 F94809 |
| from $106 | 10:43 Chicago O'Hare International | 11:37+1 день San Antonio San Antonio | 24h 54m layover 20h 28m - Atlanta | Spirit Airlines | NK2708 NK2171 |
| from $108 | 21:12 Chicago Midway | 08:05+1 день San Antonio San Antonio | 10h 53m layover 5h 22m - Orlando | Frontier Airlines | F93854 F91653 |
| from $108 | 17:08 Chicago O'Hare International | 09:36+1 день San Antonio San Antonio | 16h 28m layover 10h 31m - Orlando | Frontier Airlines | F93044 F91653 |
| from $109 | 07:20 Chicago O'Hare International | 14:00 San Antonio San Antonio | 6h 40m layover 1h 34m - Denver | Frontier Airlines | F91483 F92356 |
| from $109 | 18:59 Chicago O'Hare International | 12:02+1 день San Antonio San Antonio | 17h 3m layover 9h 38m - Los Angeles | Spirit Airlines | NK2191 NK2701 |
| from $109 | 18:20 Chicago O'Hare International | 13:06+1 день San Antonio San Antonio | 18h 46m layover 11h 17m - Los Angeles | Spirit Airlines | NK1117 NK1273 |
| from $110 | 21:50 Chicago O'Hare International | 13:23+1 день San Antonio San Antonio | 15h 33m layover 8h 28m - Las Vegas | Frontier Airlines | F92145 F93418 |
| from $113 | 08:00 Chicago O'Hare International | 23:30 San Antonio San Antonio | 15h 30m layover 8h 13m - Los Angeles | Spirit Airlines | NK3016 NK848 |
| from $113 | 06:45 Chicago O'Hare International | 23:30 San Antonio San Antonio | 16h 45m layover 9h 32m - Los Angeles | Spirit Airlines | NK467 NK848 |
| from $128 | 11:21 Chicago O'Hare International | 18:33+1 день San Antonio San Antonio | 31h 12m layover 21h 52m - Dallas 1h 5m - Las Vegas | Spirit Airlines | NK1633 NK1268 NK1586 |
| from $147 | 20:36 Chicago Midway | 22:51+1 день San Antonio San Antonio | 26h 15m layover 18h 24m - Fletcher 1h 6m - Miami | Allegiant Air | G4248 G4495 NK2227 |
Show all tickets
*Departure and arrival times - local. Prices indicated for one-way flights. Information updated on September 01, 2025
Flight Schedule Chicago (Illinois) to San Antonio (Texas)
Full flight schedule will help you in detecting at what time planes fly from Chicago to San Antonio. 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 |
|---|---|---|---|---|
|
08:45 — 11:45
|
08:45 — 11:45
UA490
United Airlines
Chicago — San Antonio
|
3h |
Find flight
from$198 |
|
|
09:23 — 12:23
|
09:23 — 12:23
UA1851
United Airlines
Chicago — San Antonio
|
3h |
Find flight
from$476 |
|
|
13:05 — 16:03
|
13:05 — 16:03
UA2479
United Airlines
Chicago — San Antonio
|
2h 58m |
Find flight
from$200 |
|
|
13:20 — 16:26
|
13:20 — 16:26
UA5536
United Airlines
Chicago — San Antonio
|
3h 6m |
Find flight
from$198 |
|
|
15:47 — 18:41
|
15:47 — 18:41
UA406
United Airlines
Chicago — San Antonio
|
2h 54m |
Find flight
from$203 |
|
|
19:40 — 22:38
|
19:40 — 22:38
UA2148
United Airlines
Chicago — San Antonio
|
2h 58m |
Find flight
from$199 |
|
|
19:59 — 22:57
|
19:59 — 22:57
UA658
United Airlines
Chicago — San Antonio
|
2h 58m |
Find flight
from$198 |
|
|
05:10 — 11:42
|
05:10 — 08:23
F91596
Frontier Airlines
Chicago — Atlanta
1h 42m stop
10:05 — 11:42
F94809
Frontier Airlines
Atlanta — San Antonio
|
6h 32m including layover |
Find flight
from$104 |
|
|
06:00 — 11:14
|
06:00 — 08:59
NK1195
Spirit Airlines
Chicago — Atlanta
55m stop
09:54 — 11:14
NK1196
Spirit Airlines
Atlanta — San Antonio
|
5h 14m including layover |
Find flight
from$94 |
|
|
06:45 — 23:30
|
06:45 — 09:07
NK467
Spirit Airlines
Chicago — Los Angeles
9h 32m stop
18:39 — 23:30
NK848
Spirit Airlines
Los Angeles — San Antonio
|
16h 45m including layover |
Find flight
from$113 |
|
|
07:00 — 18:02
|
06:00 — 08:02
F91483
Frontier Airlines
Chicago — Denver
5h 52m stop
15:20 — 18:36
F92098
Frontier Airlines
Denver — San Antonio
|
11h 2m including layover |
Find flight
from$120 |
|
|
07:20 — 14:00
|
07:20 — 09:09
F91483
Frontier Airlines
Chicago — Denver
1h 34m stop
10:43 — 14:00
F92356
Frontier Airlines
Denver — San Antonio
|
6h 40m including layover |
Find flight
from$109 |
|
|
08:00 — 23:30
|
08:00 — 10:26
NK3016
Spirit Airlines
Chicago — Los Angeles
8h 13m stop
18:39 — 23:30
NK848
Spirit Airlines
Los Angeles — San Antonio
|
15h 30m including layover |
Find flight
from$113 |
|
|
09:05 — 19:14
|
09:05 — 10:58
F93173
Frontier Airlines
Chicago — Denver
4h 57m stop
15:55 — 19:14
F92098
Frontier Airlines
Denver — San Antonio
|
10h 9m including layover |
Find flight
from$128 |
|
|
10:43 — 11:37
+1 day
|
10:00 — 13:06
NK2708
Spirit Airlines
Chicago — Atlanta
20h 28m stop
11:04 — 12:32
NK2171
Spirit Airlines
Atlanta — San Antonio
|
24h 54m including layover |
Find flight
from$106 |
|
|
12:41 — 22:51
|
12:41 — 16:44
NK2187
Spirit Airlines
Chicago — Miami
3h 56m stop
20:40 — 22:51
NK2227
Spirit Airlines
Miami — San Antonio
|
10h 10m including layover |
Find flight
from$149 |
|
|
14:44 — 18:36
+1 day
|
14:44 — 16:33
F92209
Frontier Airlines
Chicago — Denver
22h 47m stop
15:20 — 18:36
F92098
Frontier Airlines
Denver — San Antonio
|
27h 52m including layover |
Find flight
from$121 |
|
|
16:37 — 08:05
+1 day
|
09:17 — 13:11
F92792
Frontier Airlines
Chicago — Orlando
9h 36m stop
07:40 — 09:47
F91653
Frontier Airlines
Orlando — San Antonio
|
15h 28m including layover |
Find flight
from$118 |
|
|
17:08 — 09:36
+1 day
|
16:56 — 20:59
F93044
Frontier Airlines
Chicago — Orlando
10h 31m stop
07:40 — 09:47
F91653
Frontier Airlines
Orlando — San Antonio
|
16h 28m including layover |
Find flight
from$108 |
|
|
18:01 — 23:38
|
18:01 — 21:07
NK1115
Spirit Airlines
Chicago — Atlanta
1h 5m stop
22:12 — 23:38
NK1358
Spirit Airlines
Atlanta — San Antonio
|
5h 37m including layover |
Find flight
from$94 |
|
|
18:20 — 13:06
+1 day
|
18:20 — 20:53
NK1117
Spirit Airlines
Chicago — Los Angeles
11h 17m stop
08:10 — 13:06
NK1273
Spirit Airlines
Los Angeles — San Antonio
|
18h 46m including layover |
Find flight
from$109 |
|
|
19:35 — 22:51
+1 day
|
19:35 — 23:45
NK1986
Spirit Airlines
Chicago — Miami
20h 55m stop
20:40 — 22:51
NK2227
Spirit Airlines
Miami — San Antonio
|
27h 16m including layover |
Find flight
from$140 |
|
|
19:39 — 23:25
+1 day
|
19:39 — 23:32
NK507
Spirit Airlines
Chicago — Orlando
22h 11m stop
21:43 — 23:25
NK446
Spirit Airlines
Orlando — San Antonio
|
27h 46m including layover |
Find flight
from$118 |
|
|
20:17 — 09:47
+1 day
|
18:18 — 20:02
SY262
Sun Country Airlines
Chicago — Minneapolis
9h 3m stop
07:00 — 09:53
SY1835
Sun Country Airlines
Minneapolis — San Antonio
|
13h 30m including layover |
Find flight
from$152 |
|
|
21:12 — 08:05
+1 day
|
21:12 — 00:57
F93854
Frontier Airlines
Chicago — Orlando
5h 22m stop
07:40 — 09:47
F91653
Frontier Airlines
Orlando — San Antonio
|
10h 53m including layover |
Find flight
from$108 |
|
|
21:50 — 13:23
+1 day
|
21:50 — 00:12
F92145
Frontier Airlines
Chicago — Las Vegas
8h 28m stop
08:40 — 13:23
F93418
Frontier Airlines
Las Vegas — San Antonio
|
15h 33m including layover |
Find flight
from$110 |
|
|
05:05 — 12:32
+1 day
|
05:05 — 09:06
NK2
Spirit Airlines
Chicago — Miami
7h 4m stop
16:10 — 18:11
NK2060
Spirit Airlines
Miami — Atlanta
16h 53m stop
11:04 — 12:32
NK2171
Spirit Airlines
Atlanta — San Antonio
|
31h 27m including layover |
Find flight
from$142 |
|
|
08:37 — 12:32
+1 day
|
08:37 — 11:08
NK2544
Spirit Airlines
Chicago — Los Angeles
1h 29m stop
12:37 — 19:59
NK2352
Spirit Airlines
Los Angeles — Atlanta
15h 5m stop
11:04 — 12:32
NK2171
Spirit Airlines
Atlanta — San Antonio
|
27h 55m including layover |
Find flight
from$142 |
|
|
09:55 — 12:32
+1 day
|
09:55 — 14:02
NK2187
Spirit Airlines
Chicago — Miami
2h 8m stop
16:10 — 18:11
NK2060
Spirit Airlines
Miami — Atlanta
16h 53m stop
11:04 — 12:32
NK2171
Spirit Airlines
Atlanta — San Antonio
|
26h 37m including layover |
Find flight
from$142 |
|
|
10:00 — 21:50
+1 day
|
10:00 — 13:06
NK2708
Spirit Airlines
Chicago — Atlanta
21h 37m stop
10:43 — 12:38
NK2214
Spirit Airlines
Atlanta — Detroit
6h 59m stop
19:37 — 21:50
NK2746
Spirit Airlines
Detroit — San Antonio
|
35h 50m including layover |
Find flight
from$142 |
|
|
11:21 — 18:33
+1 day
|
11:21 — 13:51
NK1633
Spirit Airlines
Chicago — Dallas
21h 52m stop
11:43 — 12:46
NK1268
Spirit Airlines
Dallas — Las Vegas
1h 5m stop
13:51 — 18:33
NK1586
Spirit Airlines
Las Vegas — San Antonio
|
31h 12m including layover |
Find flight
from$128 |
|
|
14:46 — 23:25
+1 day
|
14:46 — 16:59
NK1835
Spirit Airlines
Chicago — New Orleans
4h 5m stop
21:04 — 23:59
NK433
Spirit Airlines
New Orleans — Orlando
21h 44m stop
21:43 — 23:25
NK446
Spirit Airlines
Orlando — San Antonio
|
32h 39m including layover |
Find flight
from$154 |
|
|
15:29 — 11:14
+1 day
|
15:29 — 19:39
NK867
Spirit Airlines
Chicago — Miami
1h 1m stop
20:40 — 22:40
NK3379
Spirit Airlines
Miami — Atlanta
11h 14m stop
09:54 — 11:14
NK1196
Spirit Airlines
Atlanta — San Antonio
|
19h 45m including layover |
Find flight
from$146 |
|
|
15:29 — 23:25
+1 day
|
15:29 — 19:39
NK867
Spirit Airlines
Chicago — Miami
1h 36m stop
21:15 — 22:27
NK196
Spirit Airlines
Miami — Orlando
23h 16m stop
21:43 — 23:25
NK446
Spirit Airlines
Orlando — San Antonio
|
31h 56m including layover |
Find flight
from$154 |
|
|
16:35 — 12:32
+1 day
|
16:35 — 20:20
NK2189
Spirit Airlines
Chicago — Orlando
1h 57m stop
22:17 — 23:59
NK2302
Spirit Airlines
Orlando — Atlanta
11h 5m stop
11:04 — 12:32
NK2171
Spirit Airlines
Atlanta — San Antonio
|
19h 57m including layover |
Find flight
from$142 |
|
|
17:20 — 22:51
+1 day
|
17:20 — 18:52
NK2029
Spirit Airlines
Chicago — Nashville
47m stop
19:39 — 22:54
NK2030
Spirit Airlines
Nashville — Miami
21h 46m stop
20:40 — 22:51
NK2227
Spirit Airlines
Miami — San Antonio
|
29h 31m including layover |
Find flight
from$143 |
|
|
20:36 — 22:51
+1 day
|
20:36 — 23:13
G4248
Allegiant Air
Chicago — Fletcher
18h 24m stop
17:37 — 19:34
G4495
Allegiant Air
Fletcher — Miami
1h 6m stop
20:40 — 22:51
NK2227
Spirit Airlines
Miami — San Antonio
|
26h 15m including layover |
Find flight
from$147 |
|
*Departure and arrival times - local. Updated on September 1, 2025
Flight Information
Below we will explain in detail what the flights cost on the destination from Chicago to San Antonio depends on and how to choose the most interesting flight option for you.
Distance between Chicago and San Antonio is 1684 miles. Time difference between the cities is 0h. Airplanes depart 05:00 to 22:15 from 7 Chicago airports and arrive 05:00 to 22:15 to 5 San Antonio airports. Average flight time is 2h 58m.
- The fastest flight 2h 54m
- Average flight time 2h 58m
- The earliest flight 05:00
- The latest flight 22:15
- Distance 1047 ml
The cheapest months to travel to San Antonio are july (from 94 $), august (from 94 $), may (from 104 $).
The most expensive months are december (from 301 $), october (from 113 $), september (from 109 $).
What is the lowest airfare Chicago to San Antonio?
The cheapest plane ticket found by our users is $94. This airfare is for economy class on one-way NK1115 flight by Spirit Airlines for August 8, 2025 which leaves O'Hare International in Chicago at 18:01 am and arrives at San Antonio San Antonio at 23:38.
Economy class
$94
Business class
?
First class
?
Popular Airlines on the Route
The flight Chicago — San Antonio is served by 7 regular airlines and 4 low-cost airlines. Most of the flights on this route are operated by Alaska Airlines - 18 departures per week at the price of from $ 208 . And the most expensive tickets are offered by United Airlines airline - from $ 686.
Direct flights
There are 7 nonstop flights on the route. The fastest direct flight is UA406 by United Airlines takes 2h 54m and the cheapest is NK1115 by Spirit Airlines for $198.
- UA - United Airlinesfrom $198Find
See more direct flights
Connecting Flights
There are 500 flights with layovers on the route. The fastest connecting flight is UA256 by United Airlines takes 4h 37m and the cheapest is NK1115 by Spirit Airlines for $94.
- AS - Alaska Airlinesfrom $208Find
- F9 - Frontier Airlinesfrom $104Find
- SY - Sun Country Airlinesfrom $148Find
- HA - Hawaiian Airlinesfrom $198Find
- UA - United Airlinesfrom $199Find
- NK - Spirit Airlinesfrom $94Find
- G4 - Allegiant Airfrom $147Find
See more connecting flights
Airports
You can fly from Chicago to San Antonio from 7 airports (O'Hare International, Midway, Dupage County, Chicago FSS, Merrill C Meigs (closed), Pal-Waukee, Chicago NAS).
Chicago airports
- O'Hare International-ORDfrom $94Find
- Midway-MDWfrom $108Find
- Dupage County-DPAFind
- Chicago FSS-CHIFind
- Merrill C Meigs (closed)-CGXFind
- Pal-Waukee-PWKFind
- Chicago NAS-NOHFind
San Antonio airports
- Randolph AFB-RNDFind
- Martindale AAF-MDAFind
- San Antonio-SATFind
- Kelly AFB-SKFFind
- Stinson Municipal-SSFFind
Airplanes
There are flights to San Antonio from Chicago by 7 airlines that use 0 aircraft brands. They range from huge modern airplanes to small-sized.
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Top International Destinations from Chicago
Our state-of-the art metasearch will definitely provide you with the best airfare on international flights. We’re proud to partner with many reliable travel suppliers located outside the US what gives us an opportunity to offer the most competitive prices on far destinations.
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How to book a plane 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.