United Airlines flight UA 1637: Phoenix Sky Harbor - Denver

Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Daily 17:30 Phoenix Sky Harbor (PHX) 3 19:17 Denver (DEN)
UA 1637 Non-stop Boeing 737-800 (738) 1:47 Effective from 2025-11-02
Daily 18:27 Phoenix Sky Harbor (PHX) 3 21:20 Denver (DEN)
UA 1637 Non-stop Boeing 737-900 (739) 1:53 Effective 2025-09-25 through 2025-10-25
Daily 18:30 Phoenix Sky Harbor (PHX) 3 21:26 Denver (DEN)
UA 1637 Non-stop Boeing 737-900 (739) 1:56 Effective 2025-05-22 through 2025-06-02
Tue 18:30 Phoenix Sky Harbor (PHX) 3 21:26 Denver (DEN)
UA 1637 Non-stop Boeing 737 MAX 9 (7M9) 1:56 Effective 2025-06-03 through 2025-06-24
Mon,Wed-Sun 18:30 Phoenix Sky Harbor (PHX) 3 21:26 Denver (DEN)
UA 1637 Non-stop Boeing 737-900 (739) 1:56 Effective 2025-06-04 through 2025-06-13
Sat 18:30 Phoenix Sky Harbor (PHX) 3 21:26 Denver (DEN)
UA 1637 Non-stop Boeing 737-800 (738) 1:56 Effective 2025-06-14 through 2025-06-21
Mon,Wed-Fri,Sun 18:30 Phoenix Sky Harbor (PHX) 3 21:26 Denver (DEN)
UA 1637 Non-stop Boeing 737-900 (739) 1:56 Effective 2025-06-15 through 2025-06-25
Daily 18:30 Phoenix Sky Harbor (PHX) 3 21:17 Denver (DEN)
UA 1637 Non-stop Boeing 737-800 (738) 1:47 Effective 2025-08-19 through 2025-09-24
Daily 18:30 Phoenix Sky Harbor (PHX) 3 21:17 Denver (DEN)
UA 1637 Non-stop Boeing 737-800 (738) 1:47 Effective 2025-10-26 through 2025-11-01
Thu 18:45 Phoenix Sky Harbor (PHX) 3 21:41 Denver (DEN)
UA 1637 Non-stop Boeing 737 MAX 9 (7M9) 1:56 Operates only on 2025-06-26
Mon,Wed-Fri,Sun 18:45 Phoenix Sky Harbor (PHX) 3 21:41 Denver (DEN)
UA 1637 Non-stop Boeing 737-900 (739) 1:56 Effective 2025-06-27 through 2025-07-03
Tue,Sat 18:45 Phoenix Sky Harbor (PHX) 3 21:41 Denver (DEN)
UA 1637 Non-stop Boeing 737-800 (738) 1:56 Effective 2025-06-28 through 2025-07-01
Mon,Wed-Fri,Sun 18:45 Phoenix Sky Harbor (PHX) 3 21:41 Denver (DEN)
UA 1637 Non-stop Boeing 737-900 (739) 1:56 Effective 2025-07-06 through 2025-08-18
Tue,Sat 18:45 Phoenix Sky Harbor (PHX) 3 21:41 Denver (DEN)
UA 1637 Non-stop Boeing 737-800 (738) 1:56 Effective 2025-07-08 through 2025-08-16
Mon,Wed-Fri,Sun 18:50 Phoenix Sky Harbor (PHX) 3 21:41 Denver (DEN)
UA 1637 Non-stop Boeing 737-800 (738) 1:51 Valid until 2025-05-21


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United Airlines flight UA 1637:
Phoenix Sky Harbor - Denver
Select flight date:
FLIGHT SCHEDULE
Direct Flights:
United Airlines UA1637
17:30
Phoenix Sky Harbor (PHX) 3

19:17
Denver (DEN)
Effective from 2025-11-02
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:47, non-stop
Boeing 737-800 (738)
United Airlines UA1637
18:27
Phoenix Sky Harbor (PHX) 3

21:20
Denver (DEN)
Effective 2025-09-25 through 2025-10-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:53, non-stop
Boeing 737-900 (739)
United Airlines UA1637
18:30
Phoenix Sky Harbor (PHX) 3

21:26
Denver (DEN)
Effective 2025-05-22 through 2025-06-02
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:56, non-stop
Boeing 737-900 (739)
United Airlines UA1637
18:30
Phoenix Sky Harbor (PHX) 3

21:26
Denver (DEN)
Effective 2025-06-03 through 2025-06-24
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 1:56, non-stop
Boeing 737 MAX 9 (7M9)
United Airlines UA1637
18:30
Phoenix Sky Harbor (PHX) 3

21:26
Denver (DEN)
Effective 2025-06-04 through 2025-06-13
Mon
Tue
-
Wed
Thu
Fri
Sat
Sun
Duration: 1:56, non-stop
Boeing 737-900 (739)
United Airlines UA1637
18:30
Phoenix Sky Harbor (PHX) 3

21:26
Denver (DEN)
Effective 2025-06-14 through 2025-06-21
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:56, non-stop
Boeing 737-800 (738)
United Airlines UA1637
18:30
Phoenix Sky Harbor (PHX) 3

21:26
Denver (DEN)
Effective 2025-06-15 through 2025-06-25
Mon
Tue
-
Wed
Thu
Fri
Sat
-
Sun
Duration: 1:56, non-stop
Boeing 737-900 (739)
United Airlines UA1637
18:30
Phoenix Sky Harbor (PHX) 3

21:17
Denver (DEN)
Effective 2025-08-19 through 2025-09-24
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:47, non-stop
Boeing 737-800 (738)
United Airlines UA1637
18:30
Phoenix Sky Harbor (PHX) 3

21:17
Denver (DEN)
Effective 2025-10-26 through 2025-11-01
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:47, non-stop
Boeing 737-800 (738)
United Airlines UA1637
18:45
Phoenix Sky Harbor (PHX) 3

21:41
Denver (DEN)
Operates only on 2025-06-26
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 1:56, non-stop
Boeing 737 MAX 9 (7M9)
United Airlines UA1637
18:45
Phoenix Sky Harbor (PHX) 3

21:41
Denver (DEN)
Effective 2025-06-27 through 2025-07-03
Mon
Tue
-
Wed
Thu
Fri
Sat
-
Sun
Duration: 1:56, non-stop
Boeing 737-900 (739)
United Airlines UA1637
18:45
Phoenix Sky Harbor (PHX) 3

21:41
Denver (DEN)
Effective 2025-06-28 through 2025-07-01
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:56, non-stop
Boeing 737-800 (738)
United Airlines UA1637
18:45
Phoenix Sky Harbor (PHX) 3

21:41
Denver (DEN)
Effective 2025-07-06 through 2025-08-18
Mon
Tue
-
Wed
Thu
Fri
Sat
-
Sun
Duration: 1:56, non-stop
Boeing 737-900 (739)
United Airlines UA1637
18:45
Phoenix Sky Harbor (PHX) 3

21:41
Denver (DEN)
Effective 2025-07-08 through 2025-08-16
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:56, non-stop
Boeing 737-800 (738)
United Airlines UA1637
18:50
Phoenix Sky Harbor (PHX) 3

21:41
Denver (DEN)
Valid until 2025-05-21
Mon
Tue
-
Wed
Thu
Fri
Sat
-
Sun
Duration: 1:51, non-stop
Boeing 737-800 (738)
  • UA 1637 is a domestic flight departing from the Phoenix Sky Harbor airport (PHX) and arriving at Denver airport (DEN).
  • The flight distance is 601 miles, or 968 km.
  • The timezone of both the departure and the arrival airports is UTC-7 . Current time at both airports is (loading...).
  • For direct flights, the flight time varies between 1:47 and 1:56.
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All PHX-DEN flights
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