United Airlines flight UA 1023: Multiple routes

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FLIGHT SCHEDULE
Direct Flights:
Thu-Sat 08:35 San Francisco (SFO) 3 12:18 Denver (DEN)
UA 1023 Non-stop Boeing 757-300 (753) 2:43 Effective 2026-03-05 through 2026-03-07
Daily 08:45 San Francisco (SFO) 3 12:28 Denver (DEN)
UA 1023 Non-stop Boeing 757-300 (753) 2:43 Effective 2026-03-08 through 2026-03-28
Daily 10:50 Sacramento (SMF) A 14:15 Denver (DEN)
UA 1023 Non-stop Boeing 737-900 (739) 2:25 Effective 2026-05-21 through 2026-10-24
Daily 11:02 Los Angeles (LAX) 7 14:29 Denver (DEN)
UA 1023 Non-stop Airbus A321neo (32Q) 2:27 Valid until 2026-01-05
Daily 15:10 Denver (DEN) 18:45 Chicago O'Hare (ORD) 1
UA 1023 Non-stop Airbus A321neo (32Q) 2:35 Effective 2026-03-05 through 2026-03-28
Sat 15:14 Denver (DEN) 18:47 Chicago O'Hare (ORD) 1
UA 1023 Non-stop Airbus A321neo (32Q) 2:33 Operates only on 2026-02-14
Daily 15:15 Denver (DEN) 18:46 Chicago O'Hare (ORD) 1
UA 1023 Non-stop Boeing 737-900 (739) 2:31 Effective 2026-01-06 through 2026-01-17
Sun 15:15 Denver (DEN) 18:46 Chicago O'Hare (ORD) 1
UA 1023 Non-stop Airbus A321neo (32Q) 2:31 Operates only on 2026-01-18
Daily 15:15 Denver (DEN) 18:46 Chicago O'Hare (ORD) 1
UA 1023 Non-stop Boeing 737-900 (739) 2:31 Effective 2026-01-19 through 2026-02-03
Wed 15:15 Denver (DEN) 18:46 Chicago O'Hare (ORD) 1
UA 1023 Non-stop Airbus A321neo (32Q) 2:31 Operates only on 2026-02-04
Daily 15:15 Denver (DEN) 18:46 Chicago O'Hare (ORD) 1
UA 1023 Non-stop Boeing 737-900 (739) 2:31 Effective 2026-02-05 through 2026-02-11
Daily 15:20 Denver (DEN) 18:55 Chicago O'Hare (ORD) 1
UA 1023 Non-stop Airbus A321neo (32Q) 2:35 Valid until 2026-01-05
Mon-Fri,Sun 15:20 Denver (DEN) 18:55 Chicago O'Hare (ORD) 1
UA 1023 Non-stop Airbus A321neo (32Q) 2:35 Effective 2026-02-12 through 2026-02-20
Daily 15:20 Denver (DEN) 18:55 Chicago O'Hare (ORD) 1
UA 1023 Non-stop Airbus A321neo (32Q) 2:35 Effective 2026-02-21 through 2026-03-04
Daily 15:20 Denver (DEN) 18:46 Chicago O'Hare (ORD) 1
UA 1023 Non-stop Airbus A321neo (32Q) 2:26 Effective 2026-03-29 through 2026-05-20
Daily 15:20 Denver (DEN) 18:46 Chicago O'Hare (ORD) 1
UA 1023 Non-stop Boeing 737-900 (739) 2:26 Effective from 2026-05-21
Mon-Fri 21:15 Chicago O'Hare (ORD) 1 00:15 Washington Dulles (IAD)
UA 1023 Non-stop Boeing 737-900 (739) 2:00 Valid until 2026-01-05
The flight arrives 1 day after departure.
Sat 21:15 Chicago O'Hare (ORD) 1 00:15 Washington Dulles (IAD)
UA 1023 Non-stop Airbus A320 (320) 2:00 Operates only on 2026-01-03
The flight arrives 1 day after departure.
Sun 21:15 Chicago O'Hare (ORD) 1 00:15 Washington Dulles (IAD)
UA 1023 Non-stop Boeing 737 MAX 8 (7M8) 2:00 Operates only on 2026-01-04
The flight arrives 1 day after departure.
Non-Direct Flights:
Thu-Sat 08:35 San Francisco (SFO) 3 18:45 Chicago O'Hare (ORD) 1
UA 1023 1-stop Boeing 757-300 (753) 8:10 Effective 2026-03-05 through 2026-03-07
Daily 08:45 San Francisco (SFO) 3 18:45 Chicago O'Hare (ORD) 1
UA 1023 1-stop Boeing 757-300 (753) 8:00 Effective 2026-03-08 through 2026-03-28
Daily 10:50 Sacramento (SMF) A 18:46 Chicago O'Hare (ORD) 1
UA 1023 1-stop Boeing 737-900 (739) 5:56 Effective 2026-05-21 through 2026-10-24
Daily 11:02 Los Angeles (LAX) 7 18:55 Chicago O'Hare (ORD) 1
UA 1023 1-stop Airbus A321neo (32Q) 5:53 Valid until 2026-01-05
Daily 15:20 Denver (DEN) 00:15 Washington Dulles (IAD)
UA 1023 1-stop Airbus A321neo (32Q) 6:55 Valid until 2026-01-05
The flight arrives 1 day after departure.
Daily 11:02 Los Angeles (LAX) 7 00:15 Washington Dulles (IAD)
UA 1023 2-stop Airbus A321neo (32Q) 10:13 Valid until 2026-01-05
The flight arrives 1 day after departure.
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This flight number is listed as serving the following routes:


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United Airlines flight UA 1023: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
United Airlines UA1023
08:35
San Francisco (SFO) 3

12:18
Denver (DEN)
Effective 2026-03-05 through 2026-03-07
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
Sun
-
Duration: 2:43, non-stop
Boeing 757-300 (753)
Direct Flights:
United Airlines UA1023
08:45
San Francisco (SFO) 3

12:28
Denver (DEN)
Effective 2026-03-08 through 2026-03-28
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:43, non-stop
Boeing 757-300 (753)
Direct Flights:
United Airlines UA1023
10:50
Sacramento (SMF) A

14:15
Denver (DEN)
Effective 2026-05-21 through 2026-10-24
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:25, non-stop
Boeing 737-900 (739)
Direct Flights:
United Airlines UA1023
11:02
Los Angeles (LAX) 7

14:29
Denver (DEN)
Valid until 2026-01-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:27, non-stop
Airbus A321neo (32Q)
Direct Flights:
United Airlines UA1023
15:10
Denver (DEN)

18:45
Chicago O'Hare (ORD) 1
Effective 2026-03-05 through 2026-03-28
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:35, non-stop
Airbus A321neo (32Q)
Direct Flights:
United Airlines UA1023
15:14
Denver (DEN)

18:47
Chicago O'Hare (ORD) 1
Operates only on 2026-02-14
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:33, non-stop
Airbus A321neo (32Q)
Direct Flights:
United Airlines UA1023
15:15
Denver (DEN)

18:46
Chicago O'Hare (ORD) 1
Effective 2026-01-06 through 2026-01-17
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:31, non-stop
Boeing 737-900 (739)
Direct Flights:
United Airlines UA1023
15:15
Denver (DEN)

18:46
Chicago O'Hare (ORD) 1
Operates only on 2026-01-18
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:31, non-stop
Airbus A321neo (32Q)
Direct Flights:
United Airlines UA1023
15:15
Denver (DEN)

18:46
Chicago O'Hare (ORD) 1
Effective 2026-01-19 through 2026-02-03
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:31, non-stop
Boeing 737-900 (739)
Direct Flights:
United Airlines UA1023
15:15
Denver (DEN)

18:46
Chicago O'Hare (ORD) 1
Operates only on 2026-02-04
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 2:31, non-stop
Airbus A321neo (32Q)
Direct Flights:
United Airlines UA1023
15:15
Denver (DEN)

18:46
Chicago O'Hare (ORD) 1
Effective 2026-02-05 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:31, non-stop
Boeing 737-900 (739)
Direct Flights:
United Airlines UA1023
15:20
Denver (DEN)

18:55
Chicago O'Hare (ORD) 1
Valid until 2026-01-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:35, non-stop
Airbus A321neo (32Q)
Direct Flights:
United Airlines UA1023
15:20
Denver (DEN)

18:55
Chicago O'Hare (ORD) 1
Effective 2026-02-12 through 2026-02-20
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 2:35, non-stop
Airbus A321neo (32Q)
Direct Flights:
United Airlines UA1023
15:20
Denver (DEN)

18:55
Chicago O'Hare (ORD) 1
Effective 2026-02-21 through 2026-03-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:35, non-stop
Airbus A321neo (32Q)
Direct Flights:
United Airlines UA1023
15:20
Denver (DEN)

18:46
Chicago O'Hare (ORD) 1
Effective 2026-03-29 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:26, non-stop
Airbus A321neo (32Q)
Direct Flights:
United Airlines UA1023
15:20
Denver (DEN)

18:46
Chicago O'Hare (ORD) 1
Effective from 2026-05-21
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:26, non-stop
Boeing 737-900 (739)
Direct Flights:
United Airlines UA1023
21:15
Chicago O'Hare (ORD) 1

00:15(+1)
Washington Dulles (IAD)
Valid until 2026-01-05
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
-
Duration: 2:00, non-stop
Boeing 737-900 (739)
The flight arrives 1 day after departure.
Direct Flights:
United Airlines UA1023
21:15
Chicago O'Hare (ORD) 1

00:15(+1)
Washington Dulles (IAD)
Operates only on 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:00, non-stop
Airbus A320 (320)
The flight arrives 1 day after departure.
Direct Flights:
United Airlines UA1023
21:15
Chicago O'Hare (ORD) 1

00:15(+1)
Washington Dulles (IAD)
Operates only on 2026-01-04
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 2:00, non-stop
Boeing 737 MAX 8 (7M8)
The flight arrives 1 day after departure.
Non-Direct Flights:
United Airlines UA1023
08:35
San Francisco (SFO) 3

18:45
Chicago O'Hare (ORD) 1
Effective 2026-03-05 through 2026-03-07
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
Sun
-
Duration: 8:10, 1-stop
Boeing 757-300 (753)
Non-Direct Flights:
United Airlines UA1023
08:45
San Francisco (SFO) 3

18:45
Chicago O'Hare (ORD) 1
Effective 2026-03-08 through 2026-03-28
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 8:00, 1-stop
Boeing 757-300 (753)
Non-Direct Flights:
United Airlines UA1023
10:50
Sacramento (SMF) A

18:46
Chicago O'Hare (ORD) 1
Effective 2026-05-21 through 2026-10-24
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 5:56, 1-stop
Boeing 737-900 (739)
Non-Direct Flights:
United Airlines UA1023
11:02
Los Angeles (LAX) 7

18:55
Chicago O'Hare (ORD) 1
Valid until 2026-01-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 5:53, 1-stop
Airbus A321neo (32Q)
Non-Direct Flights:
United Airlines UA1023
15:20
Denver (DEN)

00:15(+1)
Washington Dulles (IAD)
Valid until 2026-01-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 6:55, 1-stop
Airbus A321neo (32Q)
The flight arrives 1 day after departure.
Non-Direct Flights:
United Airlines UA1023
11:02
Los Angeles (LAX) 7

00:15(+1)
Washington Dulles (IAD)
Valid until 2026-01-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 10:13, 2-stop
Airbus A321neo (32Q)
The flight arrives 1 day after departure.
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This flight number is listed as serving the following routes:
  • Chicago O'Hare (ORD) - Washington Dulles (IAD)
  • Denver (DEN) - Chicago O'Hare (ORD)
  • Denver (DEN) - Washington Dulles (IAD)
  • Los Angeles (LAX) - Chicago O'Hare (ORD)
  • Los Angeles (LAX) - Denver (DEN)
  • Los Angeles (LAX) - Washington Dulles (IAD)
  • Sacramento (SMF) - Chicago O'Hare (ORD)
  • Sacramento (SMF) - Denver (DEN)
  • San Francisco (SFO) - Chicago O'Hare (ORD)
  • San Francisco (SFO) - Denver (DEN)
All United Airlines flights
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