United Airlines flight UA 423: Multiple routes

Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Daily 07:00 Lester B. Pearson, Toronto (YYZ) 1 08:55 Denver (DEN)
UA 423 Non-stop Airbus A319 (319) 3:55 Effective 2024-03-31 through 2024-05-22
Daily 07:00 Lester B. Pearson, Toronto (YYZ) 1 08:42 Denver (DEN)
UA 423 Non-stop Airbus A319 (319) 3:42 Effective 2024-05-23 through 2024-08-18
Daily 07:00 Lester B. Pearson, Toronto (YYZ) 1 08:50 Denver (DEN)
UA 423 Non-stop Airbus A319 (319) 3:50 Effective 2024-08-19 through 2024-10-26
Daily 07:55 Lester B. Pearson, Toronto (YYZ) 1 10:04 Denver (DEN)
UA 423 Non-stop Airbus A319 (319) 4:09 Valid until 2024-01-08
Daily 07:55 Lester B. Pearson, Toronto (YYZ) 1 10:05 Denver (DEN)
UA 423 Non-stop Airbus A320 (320) 4:10 Effective 2024-02-15 through 2024-03-30
Daily 08:17 Lester B. Pearson, Toronto (YYZ) 1 10:04 Denver (DEN)
UA 423 Non-stop Airbus A319 (319) 3:47 Effective from 2024-10-27
Fri 13:50 Newark Liberty, New York (EWR) C 16:25 Denver (DEN)
UA 423 Non-stop Boeing 737 MAX 9 (7M9) 4:35 Operates only on 2024-01-12
Mon-Thu,Sun 14:00 Newark Liberty, New York (EWR) C 16:35 Denver (DEN)
UA 423 Non-stop Boeing 737 MAX 9 (7M9) 4:35 Effective 2024-01-09 through 2024-01-18
Sat 14:00 Newark Liberty, New York (EWR) A 16:35 Denver (DEN)
UA 423 Non-stop Boeing 737 MAX 9 (7M9) 4:35 Effective 2024-01-13 through 2024-01-20
Mon-Fri,Sun 14:00 Newark Liberty, New York (EWR) C 16:35 Denver (DEN)
UA 423 Non-stop Boeing 737 MAX 9 (7M9) 4:35 Effective 2024-01-19 through 2024-01-28
Sat 14:00 Newark Liberty, New York (EWR) A 16:35 Denver (DEN)
UA 423 Non-stop Boeing 737 MAX 8 (7M8) 4:35 Operates only on 2024-01-27
Mon 14:00 Newark Liberty, New York (EWR) C 16:35 Denver (DEN)
UA 423 Non-stop Boeing 737 MAX 8 (7M8) 4:35 Operates only on 2024-01-29
Mon-Fri,Sun 14:00 Newark Liberty, New York (EWR) C 16:35 Denver (DEN)
UA 423 Non-stop Boeing 737 MAX 9 (7M9) 4:35 Effective 2024-01-30 through 2024-02-07
Sat 14:00 Newark Liberty, New York (EWR) A 16:35 Denver (DEN)
UA 423 Non-stop Boeing 737 MAX 9 (7M9) 4:35 Effective 2024-02-03 through 2024-02-10
Thu 14:00 Newark Liberty, New York (EWR) C 16:35 Denver (DEN)
UA 423 Non-stop Boeing 737-900 (739) 4:35 Operates only on 2024-02-08
Mon-Wed,Fri 14:00 Newark Liberty, New York (EWR) C 16:35 Denver (DEN)
UA 423 Non-stop Boeing 737 MAX 9 (7M9) 4:35 Effective 2024-02-09 through 2024-02-14
Sun 14:00 Newark Liberty, New York (EWR) C 16:35 Denver (DEN)
UA 423 Non-stop Boeing 737 MAX 8 (7M8) 4:35 Operates only on 2024-02-11
This flight number is listed as serving the following routes:


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United Airlines flight UA 423: Multiple routes
Select flight date:
FLIGHT SCHEDULE
Direct Flights:
United Airlines UA423
07:00
Lester B. Pearson, Toronto (YYZ) 1

08:55
Denver (DEN)
Effective 2024-03-31 through 2024-05-22
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 3:55, non-stop
Airbus A319 (319)
United Airlines UA423
07:00
Lester B. Pearson, Toronto (YYZ) 1

08:42
Denver (DEN)
Effective 2024-05-23 through 2024-08-18
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 3:42, non-stop
Airbus A319 (319)
United Airlines UA423
07:00
Lester B. Pearson, Toronto (YYZ) 1

08:50
Denver (DEN)
Effective 2024-08-19 through 2024-10-26
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 3:50, non-stop
Airbus A319 (319)
United Airlines UA423
07:55
Lester B. Pearson, Toronto (YYZ) 1

10:04
Denver (DEN)
Valid until 2024-01-08
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 4:09, non-stop
Airbus A319 (319)
United Airlines UA423
07:55
Lester B. Pearson, Toronto (YYZ) 1

10:05
Denver (DEN)
Effective 2024-02-15 through 2024-03-30
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 4:10, non-stop
Airbus A320 (320)
United Airlines UA423
08:17
Lester B. Pearson, Toronto (YYZ) 1

10:04
Denver (DEN)
Effective from 2024-10-27
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 3:47, non-stop
Airbus A319 (319)
United Airlines UA423
13:50
Newark Liberty, New York (EWR) C

16:25
Denver (DEN)
Operates only on 2024-01-12
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 4:35, non-stop
Boeing 737 MAX 9 (7M9)
United Airlines UA423
14:00
Newark Liberty, New York (EWR) C

16:35
Denver (DEN)
Effective 2024-01-09 through 2024-01-18
Mon
Tue
Wed
Thu
Fri
-
Sat
-
Sun
Duration: 4:35, non-stop
Boeing 737 MAX 9 (7M9)
United Airlines UA423
14:00
Newark Liberty, New York (EWR) A

16:35
Denver (DEN)
Effective 2024-01-13 through 2024-01-20
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 4:35, non-stop
Boeing 737 MAX 9 (7M9)
United Airlines UA423
14:00
Newark Liberty, New York (EWR) C

16:35
Denver (DEN)
Effective 2024-01-19 through 2024-01-28
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 4:35, non-stop
Boeing 737 MAX 9 (7M9)
United Airlines UA423
14:00
Newark Liberty, New York (EWR) A

16:35
Denver (DEN)
Operates only on 2024-01-27
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 4:35, non-stop
Boeing 737 MAX 8 (7M8)
United Airlines UA423
14:00
Newark Liberty, New York (EWR) C

16:35
Denver (DEN)
Operates only on 2024-01-29
Mon
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 4:35, non-stop
Boeing 737 MAX 8 (7M8)
United Airlines UA423
14:00
Newark Liberty, New York (EWR) C

16:35
Denver (DEN)
Effective 2024-01-30 through 2024-02-07
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 4:35, non-stop
Boeing 737 MAX 9 (7M9)
United Airlines UA423
14:00
Newark Liberty, New York (EWR) A

16:35
Denver (DEN)
Effective 2024-02-03 through 2024-02-10
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 4:35, non-stop
Boeing 737 MAX 9 (7M9)
United Airlines UA423
14:00
Newark Liberty, New York (EWR) C

16:35
Denver (DEN)
Operates only on 2024-02-08
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 4:35, non-stop
Boeing 737-900 (739)
United Airlines UA423
14:00
Newark Liberty, New York (EWR) C

16:35
Denver (DEN)
Effective 2024-02-09 through 2024-02-14
Mon
Tue
Wed
Thu
-
Fri
Sat
-
Sun
-
Duration: 4:35, non-stop
Boeing 737 MAX 9 (7M9)
United Airlines UA423
14:00
Newark Liberty, New York (EWR) C

16:35
Denver (DEN)
Operates only on 2024-02-11
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 4:35, non-stop
Boeing 737 MAX 8 (7M8)
This flight number is listed as serving the following routes:
  • Lester B. Pearson, Toronto (YYZ) - Denver (DEN)
  • Newark Liberty, New York (EWR) - Denver (DEN)
All United Airlines flights
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