United Airlines San Antonio to Chicago Flights

Cheapflightsplus.com will find cheap United Airlines flights from San Antonio to Chicago. Compare airline ticket prices and book air tickets starting from $265 from trusted online travel agencies, web sites and directly from airlines. Check flights schedule of United Airlines, arrivals and departure details below.

Find Cheap Airfare San Antonio (TX) — Chicago (IL) by United Airlines

To find cheap tickets choose a day of your departure with attractive price on the graph below and click «Find flights». For round trip flights please click «Check prices for return flight». The cheapest airfare is in march: one-way - $265, two-way – $454.
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Below is a detailed 2025 flight schedule for today, tomorrow and all other days. It may vary depending on season and a day of the week of your desired trip. We recommend booking your itinerary at least 2 weeks prior your travel to get the best price and availability by the airline.
Departure Arrival Flight Details Flight Time Price
12:26 pm — 7:05 pm
12:26 pm — 1:30 pm UA1282 United Airlines
San Antonio — Houston
2h 50m stop
4:20 pm — 7:05 pm UA2659 United Airlines
Houston — Chicago
6h 39m
including layover
Find flight
from$286
12:26 pm — 10:58 pm
12:05 pm — 1:12 pm UA1282 United Airlines
San Antonio — Houston
6h 47m stop
8:02 pm — 10:45 pm UA321 United Airlines
Houston — Chicago
10h 32m
including layover
Find flight
from$320
1:18 pm — 11:58 pm
1:00 pm — 2:24 pm UA1299 United Airlines
San Antonio — Denver
5h 48m stop
8:29 pm — 11:59 pm UA377 United Airlines
Denver — Chicago
10h 40m
including layover
Find flight
from$265
1:18 pm — 10:38 pm
1:18 pm — 2:42 pm UA1299 United Airlines
San Antonio — Denver
4h 28m stop
7:10 pm — 10:38 pm UA2258 United Airlines
Denver — Chicago
9h 20m
including layover
Find flight
from$301
2:31 pm — 9:30 pm
2:13 pm — 3:16 pm UA2498 United Airlines
San Antonio — Houston
3h 5m stop
6:40 pm — 9:18 pm UA787 United Airlines
Houston — Chicago
6h 59m
including layover
Find flight
from$271
2:31 pm — 0:15 am
+1 day
2:31 pm — 3:40 pm UA2498 United Airlines
San Antonio — Houston
5h 58m stop
9:38 pm — 0:15 am UA1692 United Airlines
Houston — Chicago
9h 44m
including layover
Find flight
from$347
4:50 pm — 10:38 pm
4:57 pm — 6:19 pm UA680 United Airlines
San Antonio — Denver
56m stop
7:20 pm — 10:51 pm UA2258 United Airlines
Denver — Chicago
5h 48m
including layover
Find flight
from$337
5:30 am — 10:09 am
5:30 am — 6:34 am UA469 United Airlines
San Antonio — Houston
46m stop
7:20 am — 10:09 am UA2182 United Airlines
Houston — Chicago
4h 39m
including layover
Find flight
from$286
5:57 pm — 0:15 am
+1 day
5:57 pm — 7:03 pm UA465 United Airlines
San Antonio — Houston
2h 35m stop
9:38 pm — 0:15 am UA1692 United Airlines
Houston — Chicago
6h 18m
including layover
Find flight
from$286
7:10 pm — 0:15 am
+1 day
7:10 pm — 8:21 pm UA6298 United Airlines
San Antonio — Houston
1h 17m stop
9:38 pm — 0:15 am UA1692 United Airlines
Houston — Chicago
5h 5m
including layover
Find flight
from$286
7:25 am — 8:17 pm
7:25 am — 12:06 pm UA2191 United Airlines
San Antonio — Newark
6h 24m stop
6:30 pm — 8:17 pm UA254 United Airlines
Newark — Chicago
12h 52m
including layover
Find flight
from$296
9:00 am — 10:38 pm
8:49 am — 10:11 am UA791 United Airlines
San Antonio — Denver
8h 47m stop
7:20 pm — 10:51 pm UA2258 United Airlines
Denver — Chicago
13h 38m
including layover
Find flight
from$315
9:45 am — 2:55 pm
9:40 am — 10:47 am UA2105 United Airlines
San Antonio — Houston
1h 21m stop
12:00 pm — 2:50 pm UA1168 United Airlines
Houston — Chicago
5h 10m
including layover
Find flight
from$282
*Departure and arrival times are local. Last updated on 02/23/2025

Flight Information

There are 28 flights by United Airlines from San Antonio to Chicago every week with departures from San Antonio, Kelly AFB, Stinson Municipal, Randolph AFB, Martindale AAF. All flights arrive at Chicago FSS, Midway, O'Hare International, Chicago NAS, Merrill C Meigs (closed), Dupage County, Pal-Waukee.

Departures start from 12:26 pm to 9:45 am. Nonstop flight is 4h 34m. The time difference between San Antonio and Chicago is 0h.

  • The fastest flight 4h 34m
  • Average flight time 9h 20m
  • The earliest flight 12:26 pm
  • The latest flight 9:45 am
  • Distance 1047 ml

The cheapest months for traveling to Chicago are february (from 265 $), december (from 271 $), january (from 283 $).

The most expensive and popular months are november (from 337 $), january (from 283 $), december (from 271 $).

The cheapest flight by United Airlines that our users were able to find is $265. This airfare is economy class on one-way UA1299 flight for February 21, 2025 leaving San Antonio in San Antonio at 1:18 pm, it includes all taxes and additional fees.

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Other Popular Airlines on the Route

Besides United Airlines there are other 4 airline carriers between San Antonio and Chicago. Please review schedules and prices from the most popular airlines to find the best airfare deals from San Antonio to Chicago.

Nonstop flights

There’re no direct flights on this route. Try flights with stops.

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Connecting Flights

List of flights with layovers (1 and more stops):

  • from $58
    Find
  • AM - Aeromexico
    from $383
    Find
  • VB - VivaAerobus
    from $435
    Find
  • NK - Spirit Airlines
    from $138
    Find
See more connecting flights

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  • 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.

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