United Airlines flight UA 1637: Phoenix Sky Harbor - Denver via Washington Dulles

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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Daily 12:35 Washington Dulles (IAD) 14:46 Phoenix Sky Harbor (PHX) 3
UA 1637 Non-stop Boeing 737-900 (739) 5:11 Effective from 2026-10-25
Thu-Sat 17:30 Phoenix Sky Harbor (PHX) 3 19:23 Denver (DEN)
UA 1637 Non-stop Boeing 737 MAX 9 (7M9) 1:53 Effective 2026-03-05 through 2026-03-07
Mon-Fri,Sun 17:34 Phoenix Sky Harbor (PHX) 3 19:30 Denver (DEN)
UA 1637 Non-stop Boeing 737-800 (738) 1:56 Effective 2026-01-06 through 2026-02-11
Daily 17:36 Phoenix Sky Harbor (PHX) 3 19:29 Denver (DEN)
UA 1637 Non-stop Boeing 737 MAX 9 (7M9) 1:53 Effective 2026-02-12 through 2026-03-04
Daily 17:40 Phoenix Sky Harbor (PHX) 3 19:36 Denver (DEN)
UA 1637 Non-stop Boeing 737-800 (738) 1:56 Valid until 2026-01-05
Sat 17:42 Phoenix Sky Harbor (PHX) 3 19:38 Denver (DEN)
UA 1637 Non-stop Boeing 737-800 (738) 1:56 Effective 2026-01-10 through 2026-02-07
Daily 18:30 Phoenix Sky Harbor (PHX) 3 21:17 Denver (DEN)
UA 1637 Non-stop Boeing 737-800 (738) 1:47 Effective from 2026-05-21
Mon,Wed,Thu,Sat,Sun 18:35 Phoenix Sky Harbor (PHX) 3 21:28 Denver (DEN)
UA 1637 Non-stop Boeing 737-800 (738) 1:53 Effective 2026-03-08 through 2026-03-28
Fri 18:35 Phoenix Sky Harbor (PHX) 3 21:28 Denver (DEN)
UA 1637 Non-stop Boeing 737 MAX 9 (7M9) 1:53 Effective 2026-03-13 through 2026-03-27
Daily 18:55 Phoenix Sky Harbor (PHX) 3 21:50 Denver (DEN)
UA 1637 Non-stop Boeing 737-900 (739) 1:55 Effective 2026-03-29 through 2026-04-29
Daily 19:04 Phoenix Sky Harbor (PHX) 3 21:59 Denver (DEN)
UA 1637 Non-stop Boeing 737-800 (738) 1:55 Effective 2026-04-30 through 2026-05-20
Non-Direct Flights:
Daily 12:35 Washington Dulles (IAD) 21:17 Denver (DEN)
UA 1637 1-stop Boeing 737-900 (739) 10:42 Effective from 2026-10-25
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Parallax here PHX-DEN


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United Airlines flight UA 1637:
Phoenix Sky Harbor - Denver via Washington Dulles
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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
United Airlines UA1637
12:35
Washington Dulles (IAD)

14:46
Phoenix Sky Harbor (PHX) 3
Effective from 2026-10-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 5:11, non-stop
Boeing 737-900 (739)
Direct Flights:
United Airlines UA1637
17:30
Phoenix Sky Harbor (PHX) 3

19:23
Denver (DEN)
Effective 2026-03-05 through 2026-03-07
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
Sun
-
Duration: 1:53, non-stop
Boeing 737 MAX 9 (7M9)
Direct Flights:
United Airlines UA1637
17:34
Phoenix Sky Harbor (PHX) 3

19:30
Denver (DEN)
Effective 2026-01-06 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 1:56, non-stop
Boeing 737-800 (738)
Direct Flights:
United Airlines UA1637
17:36
Phoenix Sky Harbor (PHX) 3

19:29
Denver (DEN)
Effective 2026-02-12 through 2026-03-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:53, non-stop
Boeing 737 MAX 9 (7M9)
Direct Flights:
United Airlines UA1637
17:40
Phoenix Sky Harbor (PHX) 3

19:36
Denver (DEN)
Valid until 2026-01-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:56, non-stop
Boeing 737-800 (738)
Direct Flights:
United Airlines UA1637
17:42
Phoenix Sky Harbor (PHX) 3

19:38
Denver (DEN)
Effective 2026-01-10 through 2026-02-07
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:56, non-stop
Boeing 737-800 (738)
Direct Flights:
United Airlines UA1637
18:30
Phoenix Sky Harbor (PHX) 3

21:17
Denver (DEN)
Effective from 2026-05-21
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:47, non-stop
Boeing 737-800 (738)
Direct Flights:
United Airlines UA1637
18:35
Phoenix Sky Harbor (PHX) 3

21:28
Denver (DEN)
Effective 2026-03-08 through 2026-03-28
Mon
Tue
-
Wed
Thu
Fri
-
Sat
Sun
Duration: 1:53, non-stop
Boeing 737-800 (738)
Direct Flights:
United Airlines UA1637
18:35
Phoenix Sky Harbor (PHX) 3

21:28
Denver (DEN)
Effective 2026-03-13 through 2026-03-27
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 1:53, non-stop
Boeing 737 MAX 9 (7M9)
Direct Flights:
United Airlines UA1637
18:55
Phoenix Sky Harbor (PHX) 3

21:50
Denver (DEN)
Effective 2026-03-29 through 2026-04-29
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:55, non-stop
Boeing 737-900 (739)
Direct Flights:
United Airlines UA1637
19:04
Phoenix Sky Harbor (PHX) 3

21:59
Denver (DEN)
Effective 2026-04-30 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:55, non-stop
Boeing 737-800 (738)
Non-Direct Flights:
United Airlines UA1637
12:35
Washington Dulles (IAD)

21:17
Denver (DEN)
Effective from 2026-10-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 10:42, 1-stop
Boeing 737-900 (739)
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Parallax here PHX-DEN
  • UA 1637 is a domestic flight departing from the Phoenix Sky Harbor airport (PHX) and arriving at Denver airport (DEN).
  • The flight runs via Washington Dulles (IAD).
  • 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...).
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