Air Canada flight AC 3999: Chicago O'Hare - San Antonio

Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Mon,Wed-Fri,Sun 13:01 Chicago O'Hare (ORD) 2 16:15 San Antonio (SAT) B
AC 3999 Non-stop Embraer EMB 175 (E7W) 3:14 Effective 2025-05-02 through 2025-05-21
Codeshare flight, operated by United Airlines.(UA 5536)
Daily 13:05 Chicago O'Hare (ORD) 1 16:03 San Antonio (SAT) B
AC 3999 Non-stop Boeing 737-700 (73G) 2:58 Effective 2025-09-25 through 2025-10-25
Codeshare flight, operated by United Airlines.(UA 2479)
Daily 13:10 Chicago O'Hare (ORD) 2 16:16 San Antonio (SAT) B
AC 3999 Non-stop Embraer EMB 175 (E7W) 3:06 Effective 2025-08-19 through 2025-09-24
Codeshare flight, operated by United Airlines.(UA 5536)
Thu 13:17 Chicago O'Hare (ORD) 2 16:31 San Antonio (SAT) B
AC 3999 Non-stop Embraer EMB 175 (E7W) 3:14 Operates only on 2025-05-01
Codeshare flight, operated by United Airlines.(UA 5536)
Mon,Thu,Fri 13:30 Chicago O'Hare (ORD) 2 16:38 San Antonio (SAT) B
AC 3999 Non-stop Embraer EMB 175 (E7W) 3:08 Effective 2025-05-22 through 2025-05-30
Codeshare flight, operated by United Airlines.(UA 5536)
Mon,Thu,Fri,Sun 13:30 Chicago O'Hare (ORD) 2 16:38 San Antonio (SAT) B
AC 3999 Non-stop Embraer EMB 175 (E7W) 3:08 Effective 2025-06-01 through 2025-07-03
Codeshare flight, operated by United Airlines.(UA 5536)
Mon,Thu,Fri,Sun 13:30 Chicago O'Hare (ORD) 2 16:38 San Antonio (SAT) B
AC 3999 Non-stop Embraer EMB 175 (E7W) 3:08 Effective 2025-07-06 through 2025-08-18
Codeshare flight, operated by United Airlines.(UA 5536)
Fri 15:47 Chicago O'Hare (ORD) 1 18:41 San Antonio (SAT) B
AC 3999 Non-stop Boeing 737-800 (738) 2:54 Operates only on 2025-07-04
Codeshare flight, operated by United Airlines.(UA 406)


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Air Canada flight AC 3999:
Chicago O'Hare - San Antonio
Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Air Canada AC3999
13:01
Chicago O'Hare (ORD) 2

16:15
San Antonio (SAT) B
Effective 2025-05-02 through 2025-05-21
Mon
Tue
-
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by United Airlines. (UA 5536)
Duration: 3:14, non-stop
Embraer EMB 175 (E7W)
Air Canada AC3999
13:05
Chicago O'Hare (ORD) 1

16:03
San Antonio (SAT) B
Effective 2025-09-25 through 2025-10-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 2479)
Duration: 2:58, non-stop
Boeing 737-700 (73G)
Air Canada AC3999
13:10
Chicago O'Hare (ORD) 2

16:16
San Antonio (SAT) B
Effective 2025-08-19 through 2025-09-24
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 5536)
Duration: 3:06, non-stop
Embraer EMB 175 (E7W)
Air Canada AC3999
13:17
Chicago O'Hare (ORD) 2

16:31
San Antonio (SAT) B
Operates only on 2025-05-01
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by United Airlines. (UA 5536)
Duration: 3:14, non-stop
Embraer EMB 175 (E7W)
Air Canada AC3999
13:30
Chicago O'Hare (ORD) 2

16:38
San Antonio (SAT) B
Effective 2025-05-22 through 2025-05-30
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
-
Codeshare flight, operated by United Airlines. (UA 5536)
Duration: 3:08, non-stop
Embraer EMB 175 (E7W)
Air Canada AC3999
13:30
Chicago O'Hare (ORD) 2

16:38
San Antonio (SAT) B
Effective 2025-06-01 through 2025-07-03
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by United Airlines. (UA 5536)
Duration: 3:08, non-stop
Embraer EMB 175 (E7W)
Air Canada AC3999
13:30
Chicago O'Hare (ORD) 2

16:38
San Antonio (SAT) B
Effective 2025-07-06 through 2025-08-18
Mon
Tue
-
Wed
-
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by United Airlines. (UA 5536)
Duration: 3:08, non-stop
Embraer EMB 175 (E7W)
Air Canada AC3999
15:47
Chicago O'Hare (ORD) 1

18:41
San Antonio (SAT) B
Operates only on 2025-07-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Codeshare flight, operated by United Airlines. (UA 406)
Duration: 2:54, non-stop
Boeing 737-800 (738)
  • AC 3999 is a domestic flight departing from the Chicago O'Hare airport (ORD) and arriving at San Antonio airport (SAT).
  • 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 2:54 and 3:14.
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