United Airlines flight UA 421: Multiple routes

Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Mon,Wed-Fri 11:15 Denver (DEN) 12:18 Las Vegas Harry Reid (LAS) 3
UA 421 Non-stop Boeing 737-900 (739) 2:03 Effective 2024-12-04 through 2024-12-18
Sun 11:15 Denver (DEN) 12:18 Las Vegas Harry Reid (LAS) 3
UA 421 Non-stop Boeing 737-800 (738) 2:03 Effective 2024-12-08 through 2024-12-15
Daily 17:25 Denver (DEN) 20:48 Milwaukee (MKE)
UA 421 Non-stop Airbus A319 (319) 2:23 Effective from 2025-02-13
Sat 17:43 Denver (DEN) 21:04 Milwaukee (MKE)
UA 421 Non-stop Airbus A320 (320) 2:21 Effective 2024-09-28 through 2024-10-26
Mon 17:45 Denver (DEN) 21:06 Milwaukee (MKE)
UA 421 Non-stop Boeing 737 MAX 8 (7M8) 2:21 Effective 2024-09-30 through 2024-10-21
Tue-Fri,Sun 17:46 Denver (DEN) 21:07 Milwaukee (MKE)
UA 421 Non-stop Airbus A320 (320) 2:21 Effective 2024-09-26 through 2024-10-25
Mon-Thu,Sun 17:55 Denver (DEN) 21:16 Milwaukee (MKE)
UA 421 Non-stop Boeing 737-800 (738) 2:21 Valid until 2024-09-05
Daily 17:55 Denver (DEN) 21:16 Milwaukee (MKE)
UA 421 Non-stop Boeing 737-800 (738) 2:21 Effective 2024-09-06 through 2024-09-12
Fri 17:55 Denver (DEN) 21:16 Milwaukee (MKE)
UA 421 Non-stop Boeing 737 MAX 8 (7M8) 2:21 Effective 2024-09-13 through 2024-09-20
Mon-Thu,Sat,Sun 17:55 Denver (DEN) 21:16 Milwaukee (MKE)
UA 421 Non-stop Boeing 737-800 (738) 2:21 Effective 2024-09-14 through 2024-09-24
Wed 17:55 Denver (DEN) 21:16 Milwaukee (MKE)
UA 421 Non-stop Airbus A319 (319) 2:21 Operates only on 2024-09-25
Daily 19:55 Salt Lake City (SLC) 21:29 Denver (DEN)
UA 421 Non-stop Airbus A320 (320) 1:34 Effective 2025-01-07 through 2025-02-12
Mon,Thu-Sun 20:05 Salt Lake City (SLC) 21:40 Denver (DEN)
UA 421 Non-stop Airbus A320 (320) 1:35 Effective 2024-12-19 through 2024-12-30
Mon,Wed-Sun 20:05 Salt Lake City (SLC) 21:40 Denver (DEN)
UA 421 Non-stop Airbus A320 (320) 1:35 Effective 2025-01-01 through 2025-01-06
Sun 23:59 Denver (DEN) 05:35 Orlando (MCO) B
UA 421 Non-stop Boeing 737 MAX 9 (7M9) 3:36 Operates only on 2024-10-27
The flight arrives 1 day after departure.
Thu,Sun 23:59 Denver (DEN) 05:35 Orlando (MCO) B
UA 421 Non-stop Boeing 737 MAX 9 (7M9) 3:36 Effective 2024-11-03 through 2024-11-21
The flight arrives 1 day after departure.
Tue,Wed,Fri-Sun 23:59 Denver (DEN) 05:35 Orlando (MCO) B
UA 421 Non-stop Boeing 737 MAX 9 (7M9) 3:36 Effective 2024-11-22 through 2024-12-01
The flight arrives 1 day after departure.
Mon 23:59 Denver (DEN) 05:35 Orlando (MCO) B
UA 421 Non-stop Boeing 737 MAX 9 (7M9) 3:36 Operates only on 2024-12-02
The flight arrives 1 day after departure.
Mon,Thu-Sun 23:59 Denver (DEN) 05:36 Orlando (MCO) B
UA 421 Non-stop Boeing 737 MAX 9 (7M9) 3:37 Effective 2024-12-19 through 2024-12-30
The flight arrives 1 day after departure.
Mon,Wed-Sun 23:59 Denver (DEN) 05:36 Orlando (MCO) B
UA 421 Non-stop Boeing 737 MAX 9 (7M9) 3:37 Effective 2025-01-01 through 2025-01-06
The flight arrives 1 day after departure.
Non-Direct Flights:
Mon,Thu-Sun 20:05 Salt Lake City (SLC) 05:36 Orlando (MCO) B
UA 421 1-stop Airbus A320 (320) 7:31 Effective 2024-12-19 through 2024-12-30
The flight arrives 1 day after departure.
Mon,Wed-Sun 20:05 Salt Lake City (SLC) 05:36 Orlando (MCO) B
UA 421 1-stop Airbus A320 (320) 7:31 Effective 2025-01-01 through 2025-01-06
The flight arrives 1 day after departure.
This flight number is listed as serving the following routes:


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United Airlines flight UA 421: Multiple routes
Select flight date:
FLIGHT SCHEDULE
Direct Flights:
United Airlines UA421
11:15
Denver (DEN)

12:18
Las Vegas Harry Reid (LAS) 3
Effective 2024-12-04 through 2024-12-18
Mon
Tue
-
Wed
Thu
Fri
Sat
-
Sun
-
Duration: 2:03, non-stop
Boeing 737-900 (739)
United Airlines UA421
11:15
Denver (DEN)

12:18
Las Vegas Harry Reid (LAS) 3
Effective 2024-12-08 through 2024-12-15
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:03, non-stop
Boeing 737-800 (738)
United Airlines UA421
17:25
Denver (DEN)

20:48
Milwaukee (MKE)
Effective from 2025-02-13
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:23, non-stop
Airbus A319 (319)
United Airlines UA421
17:43
Denver (DEN)

21:04
Milwaukee (MKE)
Effective 2024-09-28 through 2024-10-26
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:21, non-stop
Airbus A320 (320)
United Airlines UA421
17:45
Denver (DEN)

21:06
Milwaukee (MKE)
Effective 2024-09-30 through 2024-10-21
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:21, non-stop
Boeing 737 MAX 8 (7M8)
United Airlines UA421
17:46
Denver (DEN)

21:07
Milwaukee (MKE)
Effective 2024-09-26 through 2024-10-25
Mon
-
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 2:21, non-stop
Airbus A320 (320)
United Airlines UA421
17:55
Denver (DEN)

21:16
Milwaukee (MKE)
Valid until 2024-09-05
Mon
Tue
Wed
Thu
Fri
-
Sat
-
Sun
Duration: 2:21, non-stop
Boeing 737-800 (738)
United Airlines UA421
17:55
Denver (DEN)

21:16
Milwaukee (MKE)
Effective 2024-09-06 through 2024-09-12
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:21, non-stop
Boeing 737-800 (738)
United Airlines UA421
17:55
Denver (DEN)

21:16
Milwaukee (MKE)
Effective 2024-09-13 through 2024-09-20
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 2:21, non-stop
Boeing 737 MAX 8 (7M8)
United Airlines UA421
17:55
Denver (DEN)

21:16
Milwaukee (MKE)
Effective 2024-09-14 through 2024-09-24
Mon
Tue
Wed
Thu
Fri
-
Sat
Sun
Duration: 2:21, non-stop
Boeing 737-800 (738)
United Airlines UA421
17:55
Denver (DEN)

21:16
Milwaukee (MKE)
Operates only on 2024-09-25
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:21, non-stop
Airbus A319 (319)
United Airlines UA421
19:55
Salt Lake City (SLC)

21:29
Denver (DEN)
Effective 2025-01-07 through 2025-02-12
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:34, non-stop
Airbus A320 (320)
United Airlines UA421
20:05
Salt Lake City (SLC)

21:40
Denver (DEN)
Effective 2024-12-19 through 2024-12-30
Mon
Tue
-
Wed
-
Thu
Fri
Sat
Sun
Duration: 1:35, non-stop
Airbus A320 (320)
United Airlines UA421
20:05
Salt Lake City (SLC)

21:40
Denver (DEN)
Effective 2025-01-01 through 2025-01-06
Mon
Tue
-
Wed
Thu
Fri
Sat
Sun
Duration: 1:35, non-stop
Airbus A320 (320)
United Airlines UA421
23:59
Denver (DEN)

05:35(+1)
Orlando (MCO) B
Operates only on 2024-10-27
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 3:36, non-stop
Boeing 737 MAX 9 (7M9)
The flight arrives 1 day after departure.
United Airlines UA421
23:59
Denver (DEN)

05:35(+1)
Orlando (MCO) B
Effective 2024-11-03 through 2024-11-21
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
Duration: 3:36, non-stop
Boeing 737 MAX 9 (7M9)
The flight arrives 1 day after departure.
United Airlines UA421
23:59
Denver (DEN)

05:35(+1)
Orlando (MCO) B
Effective 2024-11-22 through 2024-12-01
Mon
-
Tue
Wed
Thu
-
Fri
Sat
Sun
Duration: 3:36, non-stop
Boeing 737 MAX 9 (7M9)
The flight arrives 1 day after departure.
United Airlines UA421
23:59
Denver (DEN)

05:35(+1)
Orlando (MCO) B
Operates only on 2024-12-02
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 3:36, non-stop
Boeing 737 MAX 9 (7M9)
The flight arrives 1 day after departure.
United Airlines UA421
23:59
Denver (DEN)

05:36(+1)
Orlando (MCO) B
Effective 2024-12-19 through 2024-12-30
Mon
Tue
-
Wed
-
Thu
Fri
Sat
Sun
Duration: 3:37, non-stop
Boeing 737 MAX 9 (7M9)
The flight arrives 1 day after departure.
United Airlines UA421
23:59
Denver (DEN)

05:36(+1)
Orlando (MCO) B
Effective 2025-01-01 through 2025-01-06
Mon
Tue
-
Wed
Thu
Fri
Sat
Sun
Duration: 3:37, non-stop
Boeing 737 MAX 9 (7M9)
The flight arrives 1 day after departure.
Non-Direct Flights:
United Airlines UA421
20:05
Salt Lake City (SLC)

05:36(+1)
Orlando (MCO) B
Effective 2024-12-19 through 2024-12-30
Mon
Tue
-
Wed
-
Thu
Fri
Sat
Sun
Duration: 7:31, 1-stop
Airbus A320 (320)
The flight arrives 1 day after departure.
United Airlines UA421
20:05
Salt Lake City (SLC)

05:36(+1)
Orlando (MCO) B
Effective 2025-01-01 through 2025-01-06
Mon
Tue
-
Wed
Thu
Fri
Sat
Sun
Duration: 7:31, 1-stop
Airbus A320 (320)
The flight arrives 1 day after departure.
This flight number is listed as serving the following routes:
  • Denver (DEN) - Las Vegas Harry Reid (LAS)
  • Denver (DEN) - Milwaukee (MKE)
  • Denver (DEN) - Orlando (MCO)
  • Salt Lake City (SLC) - Denver (DEN)
  • Salt Lake City (SLC) - Orlando (MCO)
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