Air Canada flight AC 5121: Denver - Phoenix Sky Harbor

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Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Daily 15:46 Denver (DEN) 16:49 Phoenix Sky Harbor (PHX) 3
AC 5121 Non-stop Boeing 737-900 (739) 2:03 Effective 2026-03-29 through 2026-04-29
Codeshare flight, operated by United Airlines.(UA 1254)
Daily 15:50 Denver (DEN) 16:53 Phoenix Sky Harbor (PHX) 3
AC 5121 Non-stop Boeing 737-800 (738) 2:03 Effective 2026-04-30 through 2026-05-20
Codeshare flight, operated by United Airlines.(UA 1254)
Mon,Tue,Sat 16:05 Denver (DEN) 18:06 Phoenix Sky Harbor (PHX) 3
AC 5121 Non-stop Boeing 737 MAX 8 (7M8) 2:01 Effective 2026-01-06 through 2026-01-17
Codeshare flight, operated by United Airlines.(UA 1254)
Wed-Fri,Sun 16:05 Denver (DEN) 18:06 Phoenix Sky Harbor (PHX) 3
AC 5121 Non-stop Boeing 737-900 (739) 2:01 Effective 2026-01-07 through 2026-01-18
Codeshare flight, operated by United Airlines.(UA 1254)
Mon,Wed-Fri,Sun 16:05 Denver (DEN) 18:06 Phoenix Sky Harbor (PHX) 3
AC 5121 Non-stop Boeing 737-900 (739) 2:01 Effective 2026-01-19 through 2026-01-25
Codeshare flight, operated by United Airlines.(UA 1254)
Mon,Tue,Sat 16:05 Denver (DEN) 18:06 Phoenix Sky Harbor (PHX) 3
AC 5121 Non-stop Boeing 737 MAX 8 (7M8) 2:01 Effective 2026-01-20 through 2026-02-10
Codeshare flight, operated by United Airlines.(UA 1254)
Wed-Fri,Sun 16:05 Denver (DEN) 18:06 Phoenix Sky Harbor (PHX) 3
AC 5121 Non-stop Boeing 737-900 (739) 2:01 Effective 2026-01-28 through 2026-02-06
Codeshare flight, operated by United Airlines.(UA 1254)
Sun 16:05 Denver (DEN) 18:06 Phoenix Sky Harbor (PHX) 3
AC 5121 Non-stop Airbus A321neo (32Q) 2:01 Operates only on 2026-02-08
Codeshare flight, operated by United Airlines.(UA 1254)
Wed 16:05 Denver (DEN) 18:06 Phoenix Sky Harbor (PHX) 3
AC 5121 Non-stop Boeing 737 MAX 8 (7M8) 2:01 Operates only on 2026-02-11
Codeshare flight, operated by United Airlines.(UA 1254)
Mon,Wed-Fri,Sun 16:05 Denver (DEN) 18:14 Phoenix Sky Harbor (PHX) 3
AC 5121 Non-stop Boeing 737-900 (739) 2:09 Effective 2026-02-12 through 2026-02-22
Codeshare flight, operated by United Airlines.(UA 1254)
Tue,Sat 16:05 Denver (DEN) 18:14 Phoenix Sky Harbor (PHX) 3
AC 5121 Non-stop Airbus A321neo (32Q) 2:09 Effective 2026-02-14 through 2026-02-21
Codeshare flight, operated by United Airlines.(UA 1254)
Mon,Tue,Sat 16:05 Denver (DEN) 18:14 Phoenix Sky Harbor (PHX) 3
AC 5121 Non-stop Airbus A321neo (32Q) 2:09 Effective 2026-02-23 through 2026-03-03
Codeshare flight, operated by United Airlines.(UA 1254)
Wed-Fri,Sun 16:05 Denver (DEN) 18:14 Phoenix Sky Harbor (PHX) 3
AC 5121 Non-stop Boeing 737-900 (739) 2:09 Effective 2026-02-25 through 2026-03-04
Codeshare flight, operated by United Airlines.(UA 1254)
Thu,Sat 16:10 Denver (DEN) 18:19 Phoenix Sky Harbor (PHX) 3
AC 5121 Non-stop Boeing 737-800 (738) 2:09 Effective 2026-03-05 through 2026-03-07
Codeshare flight, operated by United Airlines.(UA 1254)
Fri 16:10 Denver (DEN) 18:19 Phoenix Sky Harbor (PHX) 3
AC 5121 Non-stop Boeing 737 MAX 9 (7M9) 2:09 Operates only on 2026-03-06
Codeshare flight, operated by United Airlines.(UA 1254)
Mon,Wed,Thu,Sat,Sun 16:10 Denver (DEN) 17:19 Phoenix Sky Harbor (PHX) 3
AC 5121 Non-stop Boeing 737-800 (738) 2:09 Effective 2026-03-08 through 2026-03-28
Codeshare flight, operated by United Airlines.(UA 1254)
Tue 16:10 Denver (DEN) 17:19 Phoenix Sky Harbor (PHX) 3
AC 5121 Non-stop Airbus A321neo (32Q) 2:09 Effective 2026-03-10 through 2026-03-24
Codeshare flight, operated by United Airlines.(UA 1254)
Fri 16:10 Denver (DEN) 17:19 Phoenix Sky Harbor (PHX) 3
AC 5121 Non-stop Boeing 737 MAX 9 (7M9) 2:09 Effective 2026-03-13 through 2026-03-27
Codeshare flight, operated by United Airlines.(UA 1254)
Daily 16:15 Denver (DEN) 17:12 Phoenix Sky Harbor (PHX) 3
AC 5121 Non-stop Boeing 737-800 (738) 1:57 Effective from 2026-05-21
Codeshare flight, operated by United Airlines.(UA 1254)
Mon,Tue,Thu-Sun 16:18 Denver (DEN) 18:19 Phoenix Sky Harbor (PHX) 3
AC 5121 Non-stop Boeing 737-800 (738) 2:01 Valid until 2026-01-05
Codeshare flight, operated by United Airlines.(UA 2249)
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Air Canada flight AC 5121:
Denver - Phoenix Sky Harbor
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Select flight date:
FLIGHT SCHEDULE
Direct Codeshare Flights:
Air Canada AC5121
15:46
Denver (DEN)

16:49
Phoenix Sky Harbor (PHX) 3
Effective 2026-03-29 through 2026-04-29
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 1254)
Duration: 2:03, non-stop
Boeing 737-900 (739)
Direct Codeshare Flights:
Air Canada AC5121
15:50
Denver (DEN)

16:53
Phoenix Sky Harbor (PHX) 3
Effective 2026-04-30 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 1254)
Duration: 2:03, non-stop
Boeing 737-800 (738)
Direct Codeshare Flights:
Air Canada AC5121
16:05
Denver (DEN)

18:06
Phoenix Sky Harbor (PHX) 3
Effective 2026-01-06 through 2026-01-17
Mon
Tue
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by United Airlines. (UA 1254)
Duration: 2:01, non-stop
Boeing 737 MAX 8 (7M8)
Direct Codeshare Flights:
Air Canada AC5121
16:05
Denver (DEN)

18:06
Phoenix Sky Harbor (PHX) 3
Effective 2026-01-07 through 2026-01-18
Mon
-
Tue
-
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by United Airlines. (UA 1254)
Duration: 2:01, non-stop
Boeing 737-900 (739)
Direct Codeshare Flights:
Air Canada AC5121
16:05
Denver (DEN)

18:06
Phoenix Sky Harbor (PHX) 3
Effective 2026-01-19 through 2026-01-25
Mon
Tue
-
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by United Airlines. (UA 1254)
Duration: 2:01, non-stop
Boeing 737-900 (739)
Direct Codeshare Flights:
Air Canada AC5121
16:05
Denver (DEN)

18:06
Phoenix Sky Harbor (PHX) 3
Effective 2026-01-20 through 2026-02-10
Mon
Tue
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by United Airlines. (UA 1254)
Duration: 2:01, non-stop
Boeing 737 MAX 8 (7M8)
Direct Codeshare Flights:
Air Canada AC5121
16:05
Denver (DEN)

18:06
Phoenix Sky Harbor (PHX) 3
Effective 2026-01-28 through 2026-02-06
Mon
-
Tue
-
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by United Airlines. (UA 1254)
Duration: 2:01, non-stop
Boeing 737-900 (739)
Direct Codeshare Flights:
Air Canada AC5121
16:05
Denver (DEN)

18:06
Phoenix Sky Harbor (PHX) 3
Operates only on 2026-02-08
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Codeshare flight, operated by United Airlines. (UA 1254)
Duration: 2:01, non-stop
Airbus A321neo (32Q)
Direct Codeshare Flights:
Air Canada AC5121
16:05
Denver (DEN)

18:06
Phoenix Sky Harbor (PHX) 3
Operates only on 2026-02-11
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by United Airlines. (UA 1254)
Duration: 2:01, non-stop
Boeing 737 MAX 8 (7M8)
Direct Codeshare Flights:
Air Canada AC5121
16:05
Denver (DEN)

18:14
Phoenix Sky Harbor (PHX) 3
Effective 2026-02-12 through 2026-02-22
Mon
Tue
-
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by United Airlines. (UA 1254)
Duration: 2:09, non-stop
Boeing 737-900 (739)
Direct Codeshare Flights:
Air Canada AC5121
16:05
Denver (DEN)

18:14
Phoenix Sky Harbor (PHX) 3
Effective 2026-02-14 through 2026-02-21
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by United Airlines. (UA 1254)
Duration: 2:09, non-stop
Airbus A321neo (32Q)
Direct Codeshare Flights:
Air Canada AC5121
16:05
Denver (DEN)

18:14
Phoenix Sky Harbor (PHX) 3
Effective 2026-02-23 through 2026-03-03
Mon
Tue
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Codeshare flight, operated by United Airlines. (UA 1254)
Duration: 2:09, non-stop
Airbus A321neo (32Q)
Direct Codeshare Flights:
Air Canada AC5121
16:05
Denver (DEN)

18:14
Phoenix Sky Harbor (PHX) 3
Effective 2026-02-25 through 2026-03-04
Mon
-
Tue
-
Wed
Thu
Fri
Sat
-
Sun
Codeshare flight, operated by United Airlines. (UA 1254)
Duration: 2:09, non-stop
Boeing 737-900 (739)
Direct Codeshare Flights:
Air Canada AC5121
16:10
Denver (DEN)

18:19
Phoenix Sky Harbor (PHX) 3
Effective 2026-03-05 through 2026-03-07
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
Sun
-
Codeshare flight, operated by United Airlines. (UA 1254)
Duration: 2:09, non-stop
Boeing 737-800 (738)
Direct Codeshare Flights:
Air Canada AC5121
16:10
Denver (DEN)

18:19
Phoenix Sky Harbor (PHX) 3
Operates only on 2026-03-06
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Codeshare flight, operated by United Airlines. (UA 1254)
Duration: 2:09, non-stop
Boeing 737 MAX 9 (7M9)
Direct Codeshare Flights:
Air Canada AC5121
16:10
Denver (DEN)

17:19
Phoenix Sky Harbor (PHX) 3
Effective 2026-03-08 through 2026-03-28
Mon
Tue
-
Wed
Thu
Fri
-
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 1254)
Duration: 2:09, non-stop
Boeing 737-800 (738)
Direct Codeshare Flights:
Air Canada AC5121
16:10
Denver (DEN)

17:19
Phoenix Sky Harbor (PHX) 3
Effective 2026-03-10 through 2026-03-24
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Codeshare flight, operated by United Airlines. (UA 1254)
Duration: 2:09, non-stop
Airbus A321neo (32Q)
Direct Codeshare Flights:
Air Canada AC5121
16:10
Denver (DEN)

17:19
Phoenix Sky Harbor (PHX) 3
Effective 2026-03-13 through 2026-03-27
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Codeshare flight, operated by United Airlines. (UA 1254)
Duration: 2:09, non-stop
Boeing 737 MAX 9 (7M9)
Direct Codeshare Flights:
Air Canada AC5121
16:15
Denver (DEN)

17:12
Phoenix Sky Harbor (PHX) 3
Effective from 2026-05-21
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 1254)
Duration: 1:57, non-stop
Boeing 737-800 (738)
Direct Codeshare Flights:
Air Canada AC5121
16:18
Denver (DEN)

18:19
Phoenix Sky Harbor (PHX) 3
Valid until 2026-01-05
Mon
Tue
Wed
-
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines. (UA 2249)
Duration: 2:01, non-stop
Boeing 737-800 (738)
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  • AC 5121 is a domestic flight departing from the Denver airport (DEN) and arriving at Phoenix Sky Harbor airport (PHX).
  • 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 1:57 and 2:09.
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