United Airlines flight UA 1236: Multiple routes

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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Sun 09:36 George Bush, Houston (IAH) C 13:45 Dulles, Washington (IAD)
UA 1236 Non-stop Boeing 737 MAX 9 (7M9) 3:09 Operates only on 2025-05-25
Thu 09:45 George Bush, Houston (IAH) C 13:57 Dulles, Washington (IAD)
UA 1236 Non-stop Boeing 737-700 (73G) 3:12 Operates only on 2025-05-22
Mon-Sat 09:45 George Bush, Houston (IAH) C 13:57 Dulles, Washington (IAD)
UA 1236 Non-stop Boeing 737-900 (739) 3:12 Effective 2025-05-23 through 2025-05-31
Mon-Sat 15:44 Dulles, Washington (IAD) 17:52 Denver (DEN)
UA 1236 Non-stop Boeing 737-900 (739) 4:08 Effective 2025-05-22 through 2025-05-31
Mon-Fri,Sun 15:45 Philadelphia (PHL) D 18:03 Denver (DEN)
UA 1236 Non-stop Airbus A320 (320) 4:18 Effective 2025-06-01 through 2025-06-25
Sat 15:45 Philadelphia (PHL) D 18:03 Denver (DEN)
UA 1236 Non-stop Boeing 737-800 (738) 4:18 Operates only on 2025-06-07
Sat 15:45 Philadelphia (PHL) D 18:03 Denver (DEN)
UA 1236 Non-stop Boeing 737-900 (739) 4:18 Effective 2025-06-14 through 2025-06-21
Sun 15:47 Dulles, Washington (IAD) 17:55 Denver (DEN)
UA 1236 Non-stop Boeing 737-900 (739) 4:08 Operates only on 2025-05-25
Mon-Wed 16:00 Jackson (JAC) 17:43 Denver (DEN)
UA 1236 Non-stop Airbus A319 (319) 1:43 Effective 2025-09-22 through 2025-09-24
Mon,Wed-Fri,Sun 18:50 Salt Lake City (SLC) 20:21 Denver (DEN)
UA 1236 Non-stop Boeing 737-800 (738) 1:31 Effective 2025-06-26 through 2025-07-03
Mon,Wed-Fri,Sun 18:50 Salt Lake City (SLC) 20:21 Denver (DEN)
UA 1236 Non-stop Boeing 737-800 (738) 1:31 Effective 2025-07-06 through 2025-08-18
Mon,Wed-Fri,Sun 21:00 Denver (DEN) 22:00 Phoenix Sky Harbor (PHX) 3
UA 1236 Non-stop Boeing 737 MAX 8 (7M8) 2:00 Valid until 2025-05-19
Wed 21:00 Denver (DEN) 22:00 Phoenix Sky Harbor (PHX) 3
UA 1236 Non-stop Boeing 737-800 (738) 2:00 Operates only on 2025-05-21
Daily 21:04 Denver (DEN) 22:00 Phoenix Sky Harbor (PHX) 3
UA 1236 Non-stop Boeing 737-800 (738) 1:56 Effective 2025-06-26 through 2025-07-03
Daily 21:04 Denver (DEN) 22:00 Phoenix Sky Harbor (PHX) 3
UA 1236 Non-stop Boeing 737-800 (738) 1:56 Effective 2025-07-06 through 2025-08-18
Daily 21:04 Denver (DEN) 22:01 Phoenix Sky Harbor (PHX) 3
UA 1236 Non-stop Boeing 737 MAX 9 (7M9) 1:57 Effective 2025-09-25 through 2025-10-25
Thu-Sat 21:05 Denver (DEN) 22:01 Phoenix Sky Harbor (PHX) 3
UA 1236 Non-stop Boeing 737-800 (738) 1:56 Effective 2025-05-22 through 2025-05-31
Mon-Wed,Sun 21:05 Denver (DEN) 22:01 Phoenix Sky Harbor (PHX) 3
UA 1236 Non-stop Boeing 737 MAX 8 (7M8) 1:56 Effective 2025-05-25 through 2025-05-28
Daily 21:05 Denver (DEN) 22:01 Phoenix Sky Harbor (PHX) 3
UA 1236 Non-stop Boeing 737-800 (738) 1:56 Effective 2025-06-01 through 2025-06-24
Wed 21:05 Denver (DEN) 22:01 Phoenix Sky Harbor (PHX) 3
UA 1236 Non-stop Boeing 737-900 (739) 1:56 Operates only on 2025-06-25
Daily 21:05 Denver (DEN) 21:59 Phoenix Sky Harbor (PHX) 3
UA 1236 Non-stop Boeing 737-800 (738) 1:54 Effective 2025-08-19 through 2025-09-24
Daily 21:05 Denver (DEN) 21:59 Phoenix Sky Harbor (PHX) 3
UA 1236 Non-stop Boeing 737-800 (738) 1:54 Effective 2025-10-26 through 2025-11-01
Daily 21:05 Denver (DEN) 22:59 Phoenix Sky Harbor (PHX) 3
UA 1236 Non-stop Boeing 737-800 (738) 1:54 Effective 2025-11-02 through 2025-12-01
Daily 21:05 Denver (DEN) 22:59 Phoenix Sky Harbor (PHX) 3
UA 1236 Non-stop Boeing 737-800 (738) 1:54 Effective from 2025-12-18
Non-Direct Flights:
Sun 09:36 George Bush, Houston (IAH) C 17:55 Denver (DEN)
UA 1236 1-stop Boeing 737 MAX 9 (7M9) 9:19 Operates only on 2025-05-25
Thu 09:45 George Bush, Houston (IAH) C 17:52 Denver (DEN)
UA 1236 1-stop Boeing 737-700 (73G) 9:07 Operates only on 2025-05-22
Mon-Sat 09:45 George Bush, Houston (IAH) C 17:52 Denver (DEN)
UA 1236 1-stop Boeing 737-900 (739) 9:07 Effective 2025-05-23 through 2025-05-31
Mon-Sat 15:44 Dulles, Washington (IAD) 22:01 Phoenix Sky Harbor (PHX) 3
UA 1236 1-stop Boeing 737-900 (739) 9:17 Effective 2025-05-22 through 2025-05-31
Mon-Fri,Sun 15:45 Philadelphia (PHL) D 22:01 Phoenix Sky Harbor (PHX) 3
UA 1236 1-stop Airbus A320 (320) 9:16 Effective 2025-06-01 through 2025-06-25
Sat 15:45 Philadelphia (PHL) D 22:01 Phoenix Sky Harbor (PHX) 3
UA 1236 1-stop Boeing 737-800 (738) 9:16 Operates only on 2025-06-07
Sat 15:45 Philadelphia (PHL) D 22:01 Phoenix Sky Harbor (PHX) 3
UA 1236 1-stop Boeing 737-900 (739) 9:16 Effective 2025-06-14 through 2025-06-21
Sun 15:47 Dulles, Washington (IAD) 22:01 Phoenix Sky Harbor (PHX) 3
UA 1236 1-stop Boeing 737-900 (739) 9:14 Operates only on 2025-05-25
Mon-Wed 16:00 Jackson (JAC) 21:59 Phoenix Sky Harbor (PHX) 3
UA 1236 1-stop Airbus A319 (319) 6:59 Effective 2025-09-22 through 2025-09-24
Mon,Wed-Fri,Sun 18:50 Salt Lake City (SLC) 22:00 Phoenix Sky Harbor (PHX) 3
UA 1236 1-stop Boeing 737-800 (738) 4:10 Effective 2025-06-26 through 2025-07-03
Mon,Wed-Fri,Sun 18:50 Salt Lake City (SLC) 22:00 Phoenix Sky Harbor (PHX) 3
UA 1236 1-stop Boeing 737-800 (738) 4:10 Effective 2025-07-06 through 2025-08-18
Sun 09:36 George Bush, Houston (IAH) C 22:01 Phoenix Sky Harbor (PHX) 3
UA 1236 2-stop Boeing 737 MAX 9 (7M9) 14:25 Operates only on 2025-05-25
Thu 09:45 George Bush, Houston (IAH) C 22:01 Phoenix Sky Harbor (PHX) 3
UA 1236 2-stop Boeing 737-700 (73G) 14:16 Operates only on 2025-05-22
Mon-Sat 09:45 George Bush, Houston (IAH) C 22:01 Phoenix Sky Harbor (PHX) 3
UA 1236 2-stop Boeing 737-900 (739) 14:16 Effective 2025-05-23 through 2025-05-31
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This flight number is listed as serving the following routes:


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United Airlines flight UA 1236: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
United Airlines UA1236
09:36
George Bush, Houston (IAH) C

13:45
Dulles, Washington (IAD)
Operates only on 2025-05-25
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 3:09, non-stop
Boeing 737 MAX 9 (7M9)
United Airlines UA1236
09:45
George Bush, Houston (IAH) C

13:57
Dulles, Washington (IAD)
Operates only on 2025-05-22
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 3:12, non-stop
Boeing 737-700 (73G)
United Airlines UA1236
09:45
George Bush, Houston (IAH) C

13:57
Dulles, Washington (IAD)
Effective 2025-05-23 through 2025-05-31
Mon
Tue
Wed
Thu
Fri
Sat
Sun
-
Duration: 3:12, non-stop
Boeing 737-900 (739)
United Airlines UA1236
15:44
Dulles, Washington (IAD)

17:52
Denver (DEN)
Effective 2025-05-22 through 2025-05-31
Mon
Tue
Wed
Thu
Fri
Sat
Sun
-
Duration: 4:08, non-stop
Boeing 737-900 (739)
United Airlines UA1236
15:45
Philadelphia (PHL) D

18:03
Denver (DEN)
Effective 2025-06-01 through 2025-06-25
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 4:18, non-stop
Airbus A320 (320)
United Airlines UA1236
15:45
Philadelphia (PHL) D

18:03
Denver (DEN)
Operates only on 2025-06-07
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 4:18, non-stop
Boeing 737-800 (738)
United Airlines UA1236
15:45
Philadelphia (PHL) D

18:03
Denver (DEN)
Effective 2025-06-14 through 2025-06-21
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 4:18, non-stop
Boeing 737-900 (739)
United Airlines UA1236
15:47
Dulles, Washington (IAD)

17:55
Denver (DEN)
Operates only on 2025-05-25
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 4:08, non-stop
Boeing 737-900 (739)
United Airlines UA1236
16:00
Jackson (JAC)

17:43
Denver (DEN)
Effective 2025-09-22 through 2025-09-24
Mon
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:43, non-stop
Airbus A319 (319)
United Airlines UA1236
18:50
Salt Lake City (SLC)

20:21
Denver (DEN)
Effective 2025-06-26 through 2025-07-03
Mon
Tue
-
Wed
Thu
Fri
Sat
-
Sun
Duration: 1:31, non-stop
Boeing 737-800 (738)
United Airlines UA1236
18:50
Salt Lake City (SLC)

20:21
Denver (DEN)
Effective 2025-07-06 through 2025-08-18
Mon
Tue
-
Wed
Thu
Fri
Sat
-
Sun
Duration: 1:31, non-stop
Boeing 737-800 (738)
United Airlines UA1236
21:00
Denver (DEN)

22:00
Phoenix Sky Harbor (PHX) 3
Valid until 2025-05-19
Mon
Tue
-
Wed
Thu
Fri
Sat
-
Sun
Duration: 2:00, non-stop
Boeing 737 MAX 8 (7M8)
United Airlines UA1236
21:00
Denver (DEN)

22:00
Phoenix Sky Harbor (PHX) 3
Operates only on 2025-05-21
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:00, non-stop
Boeing 737-800 (738)
United Airlines UA1236
21:04
Denver (DEN)

22:00
Phoenix Sky Harbor (PHX) 3
Effective 2025-06-26 through 2025-07-03
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:56, non-stop
Boeing 737-800 (738)
United Airlines UA1236
21:04
Denver (DEN)

22:00
Phoenix Sky Harbor (PHX) 3
Effective 2025-07-06 through 2025-08-18
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:56, non-stop
Boeing 737-800 (738)
United Airlines UA1236
21:04
Denver (DEN)

22:01
Phoenix Sky Harbor (PHX) 3
Effective 2025-09-25 through 2025-10-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:57, non-stop
Boeing 737 MAX 9 (7M9)
United Airlines UA1236
21:05
Denver (DEN)

22:01
Phoenix Sky Harbor (PHX) 3
Effective 2025-05-22 through 2025-05-31
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
Sun
-
Duration: 1:56, non-stop
Boeing 737-800 (738)
United Airlines UA1236
21:05
Denver (DEN)

22:01
Phoenix Sky Harbor (PHX) 3
Effective 2025-05-25 through 2025-05-28
Mon
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
Duration: 1:56, non-stop
Boeing 737 MAX 8 (7M8)
United Airlines UA1236
21:05
Denver (DEN)

22:01
Phoenix Sky Harbor (PHX) 3
Effective 2025-06-01 through 2025-06-24
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:56, non-stop
Boeing 737-800 (738)
United Airlines UA1236
21:05
Denver (DEN)

22:01
Phoenix Sky Harbor (PHX) 3
Operates only on 2025-06-25
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:56, non-stop
Boeing 737-900 (739)
United Airlines UA1236
21:05
Denver (DEN)

21:59
Phoenix Sky Harbor (PHX) 3
Effective 2025-08-19 through 2025-09-24
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:54, non-stop
Boeing 737-800 (738)
United Airlines UA1236
21:05
Denver (DEN)

21:59
Phoenix Sky Harbor (PHX) 3
Effective 2025-10-26 through 2025-11-01
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:54, non-stop
Boeing 737-800 (738)
United Airlines UA1236
21:05
Denver (DEN)

22:59
Phoenix Sky Harbor (PHX) 3
Effective 2025-11-02 through 2025-12-01
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:54, non-stop
Boeing 737-800 (738)
United Airlines UA1236
21:05
Denver (DEN)

22:59
Phoenix Sky Harbor (PHX) 3
Effective from 2025-12-18
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:54, non-stop
Boeing 737-800 (738)
Non-Direct Flights:
United Airlines UA1236
09:36
George Bush, Houston (IAH) C

17:55
Denver (DEN)
Operates only on 2025-05-25
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 9:19, 1-stop
Boeing 737 MAX 9 (7M9)
United Airlines UA1236
09:45
George Bush, Houston (IAH) C

17:52
Denver (DEN)
Operates only on 2025-05-22
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 9:07, 1-stop
Boeing 737-700 (73G)
United Airlines UA1236
09:45
George Bush, Houston (IAH) C

17:52
Denver (DEN)
Effective 2025-05-23 through 2025-05-31
Mon
Tue
Wed
Thu
Fri
Sat
Sun
-
Duration: 9:07, 1-stop
Boeing 737-900 (739)
United Airlines UA1236
15:44
Dulles, Washington (IAD)

22:01
Phoenix Sky Harbor (PHX) 3
Effective 2025-05-22 through 2025-05-31
Mon
Tue
Wed
Thu
Fri
Sat
Sun
-
Duration: 9:17, 1-stop
Boeing 737-900 (739)
United Airlines UA1236
15:45
Philadelphia (PHL) D

22:01
Phoenix Sky Harbor (PHX) 3
Effective 2025-06-01 through 2025-06-25
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 9:16, 1-stop
Airbus A320 (320)
United Airlines UA1236
15:45
Philadelphia (PHL) D

22:01
Phoenix Sky Harbor (PHX) 3
Operates only on 2025-06-07
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 9:16, 1-stop
Boeing 737-800 (738)
United Airlines UA1236
15:45
Philadelphia (PHL) D

22:01
Phoenix Sky Harbor (PHX) 3
Effective 2025-06-14 through 2025-06-21
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 9:16, 1-stop
Boeing 737-900 (739)
United Airlines UA1236
15:47
Dulles, Washington (IAD)

22:01
Phoenix Sky Harbor (PHX) 3
Operates only on 2025-05-25
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 9:14, 1-stop
Boeing 737-900 (739)
United Airlines UA1236
16:00
Jackson (JAC)

21:59
Phoenix Sky Harbor (PHX) 3
Effective 2025-09-22 through 2025-09-24
Mon
Tue
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 6:59, 1-stop
Airbus A319 (319)
United Airlines UA1236
18:50
Salt Lake City (SLC)

22:00
Phoenix Sky Harbor (PHX) 3
Effective 2025-06-26 through 2025-07-03
Mon
Tue
-
Wed
Thu
Fri
Sat
-
Sun
Duration: 4:10, 1-stop
Boeing 737-800 (738)
United Airlines UA1236
18:50
Salt Lake City (SLC)

22:00
Phoenix Sky Harbor (PHX) 3
Effective 2025-07-06 through 2025-08-18
Mon
Tue
-
Wed
Thu
Fri
Sat
-
Sun
Duration: 4:10, 1-stop
Boeing 737-800 (738)
United Airlines UA1236
09:36
George Bush, Houston (IAH) C

22:01
Phoenix Sky Harbor (PHX) 3
Operates only on 2025-05-25
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 14:25, 2-stop
Boeing 737 MAX 9 (7M9)
United Airlines UA1236
09:45
George Bush, Houston (IAH) C

22:01
Phoenix Sky Harbor (PHX) 3
Operates only on 2025-05-22
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 14:16, 2-stop
Boeing 737-700 (73G)
United Airlines UA1236
09:45
George Bush, Houston (IAH) C

22:01
Phoenix Sky Harbor (PHX) 3
Effective 2025-05-23 through 2025-05-31
Mon
Tue
Wed
Thu
Fri
Sat
Sun
-
Duration: 14:16, 2-stop
Boeing 737-900 (739)
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This flight number is listed as serving the following routes:
  • Denver (DEN) - Phoenix Sky Harbor (PHX)
  • Dulles, Washington (IAD) - Denver (DEN)
  • Dulles, Washington (IAD) - Phoenix Sky Harbor (PHX)
  • George Bush, Houston (IAH) - Denver (DEN)
  • George Bush, Houston (IAH) - Dulles, Washington (IAD)
  • George Bush, Houston (IAH) - Phoenix Sky Harbor (PHX)
  • Jackson (JAC) - Denver (DEN)
  • Jackson (JAC) - Phoenix Sky Harbor (PHX)
  • Philadelphia (PHL) - Denver (DEN)
  • Philadelphia (PHL) - Phoenix Sky Harbor (PHX)
  • Salt Lake City (SLC) - Denver (DEN)
  • Salt Lake City (SLC) - Phoenix Sky Harbor (PHX)
All United Airlines flights
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