Air Canada flight AC 3998: San Antonio - Chicago O'Hare

Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Mon-Wed,Fri 06:40 San Antonio (SAT) B 09:31 Chicago O'Hare (ORD) 1
AC 3998 Non-stop Boeing 737-700 (73G) 2:51 Valid until 2026-01-05
Codeshare flight, operated by United Airlines.(UA 1332)
Sat 06:40 San Antonio (SAT) B 09:31 Chicago O'Hare (ORD) 1
AC 3998 Non-stop Boeing 737-900 (739) 2:51 Valid until 2026-01-03
Codeshare flight, operated by United Airlines.(UA 1332)
Sun 06:40 San Antonio (SAT) B 09:31 Chicago O'Hare (ORD) 1
AC 3998 Non-stop Boeing 737 MAX 9 (7M9) 2:51 Valid until 2026-01-04
Codeshare flight, operated by United Airlines.(UA 1332)
Daily 17:00 San Antonio (SAT) B 19:50 Chicago O'Hare (ORD) 1
AC 3998 Non-stop Boeing 737 MAX 8 (7M8) 2:50 Effective from 2026-05-21
Codeshare flight, operated by United Airlines.(UA 697)
Daily 17:19 San Antonio (SAT) B 20:20 Chicago O'Hare (ORD) 2
AC 3998 Non-stop Embraer EMB 175 (E7W) 3:01 Effective 2026-03-29 through 2026-04-29
Codeshare flight, operated by United Airlines.(UA 5636)
Mon,Wed-Sun 17:24 San Antonio (SAT) B 20:23 Chicago O'Hare (ORD) 2
AC 3998 Non-stop Embraer EMB 175 (E7W) 2:59 Effective 2026-03-05 through 2026-03-28
Codeshare flight, operated by United Airlines.(UA 5636)
Mon-Fri,Sun 17:25 San Antonio (SAT) B 20:24 Chicago O'Hare (ORD) 2
AC 3998 Non-stop Embraer EMB 175 (E7W) 2:59 Effective 2026-02-12 through 2026-03-04
Codeshare flight, operated by United Airlines.(UA 5636)
Daily 17:30 San Antonio (SAT) B 20:25 Chicago O'Hare (ORD) 1
AC 3998 Non-stop Boeing 737-700 (73G) 2:55 Effective 2026-04-30 through 2026-05-20
Codeshare flight, operated by United Airlines.(UA 697)


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Air Canada flight AC 3998:
San Antonio - Chicago O'Hare
Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Air Canada AC3998
06:40
San Antonio (SAT) B

09:31
Chicago O'Hare (ORD) 1
Valid until 2026-01-05
Mon
Tue
Wed
Thu
-
Fri
Sat
-
Sun
-
Codeshare flight, operated by United Airlines. (UA 1332)
Duration: 2:51, non-stop
Boeing 737-700 (73G)
Direct Codeshare Flights:
Air Canada AC3998
06:40
San Antonio (SAT) B

09:31
Chicago O'Hare (ORD) 1
Valid until 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by United Airlines. (UA 1332)
Duration: 2:51, non-stop
Boeing 737-900 (739)
Direct Codeshare Flights:
Air Canada AC3998
06:40
San Antonio (SAT) B

09:31
Chicago O'Hare (ORD) 1
Valid until 2026-01-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Codeshare flight, operated by United Airlines. (UA 1332)
Duration: 2:51, non-stop
Boeing 737 MAX 9 (7M9)
Direct Codeshare Flights:
Air Canada AC3998
17:00
San Antonio (SAT) B

19:50
Chicago O'Hare (ORD) 1
Effective from 2026-05-21
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 697)
Duration: 2:50, non-stop
Boeing 737 MAX 8 (7M8)
Direct Codeshare Flights:
Air Canada AC3998
17:19
San Antonio (SAT) B

20:20
Chicago O'Hare (ORD) 2
Effective 2026-03-29 through 2026-04-29
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 5636)
Duration: 3:01, non-stop
Embraer EMB 175 (E7W)
Direct Codeshare Flights:
Air Canada AC3998
17:24
San Antonio (SAT) B

20:23
Chicago O'Hare (ORD) 2
Effective 2026-03-05 through 2026-03-28
Mon
Tue
-
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 5636)
Duration: 2:59, non-stop
Embraer EMB 175 (E7W)
Direct Codeshare Flights:
Air Canada AC3998
17:25
San Antonio (SAT) B

20:24
Chicago O'Hare (ORD) 2
Effective 2026-02-12 through 2026-03-04
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by United Airlines. (UA 5636)
Duration: 2:59, non-stop
Embraer EMB 175 (E7W)
Direct Codeshare Flights:
Air Canada AC3998
17:30
San Antonio (SAT) B

20:25
Chicago O'Hare (ORD) 1
Effective 2026-04-30 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 697)
Duration: 2:55, non-stop
Boeing 737-700 (73G)
  • AC 3998 is a domestic flight departing from the San Antonio airport (SAT) and arriving at Chicago O'Hare airport (ORD).
  • The flight distance is 1041 miles, or 1676 km.
  • The timezone of both the departure and the arrival airports is UTC-6 . Current time at both airports is (loading...).
  • For direct flights, the flight time varies between 2:50 and 3:01.
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