United Airlines flight UA 623: Multiple routes

Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Daily 09:00 New York LaGuardia (LGA) B 10:29 Chicago O'Hare (ORD) 1
UA 623 Non-stop Boeing 737-800 (738) 2:29 Effective 2025-08-19 through 2025-09-24
Daily 09:00 New York LaGuardia (LGA) B 10:29 Chicago O'Hare (ORD) 1
UA 623 Non-stop Boeing 737-800 (738) 2:29 Effective from 2025-10-26
Mon-Fri 09:15 New York LaGuardia (LGA) B 10:53 Chicago O'Hare (ORD) 1
UA 623 Non-stop Boeing 737-800 (738) 2:38 Effective 2025-05-22 through 2025-05-30
Mon-Fri,Sun 09:15 New York LaGuardia (LGA) B 10:53 Chicago O'Hare (ORD) 1
UA 623 Non-stop Boeing 737-800 (738) 2:38 Effective 2025-06-01 through 2025-08-18
Daily 09:18 New York LaGuardia (LGA) B 10:55 Chicago O'Hare (ORD) 1
UA 623 Non-stop Boeing 737 MAX 8 (7M8) 2:37 Effective 2025-09-25 through 2025-10-25
Mon-Fri,Sun 09:30 New York LaGuardia (LGA) B 11:11 Chicago O'Hare (ORD) 1
UA 623 Non-stop Boeing 737-800 (738) 2:41 Valid until 2025-05-21
Daily 12:45 Chicago O'Hare (ORD) 1 14:11 Nashville (BNA)
UA 623 Non-stop Airbus A319 (319) 1:26 Effective from 2025-10-26
Sat 13:20 Reno (RNO) 18:58 George Bush, Houston (IAH) C
UA 623 Non-stop Boeing 737-700 (73G) 3:38 Effective 2025-05-24 through 2025-05-31
Sat 13:20 Reno (RNO) 18:58 George Bush, Houston (IAH) C
UA 623 Non-stop Airbus A320 (320) 3:38 Effective 2025-06-07 through 2025-06-21
Sat 13:55 Kansas City (MCI) 14:53 Denver (DEN)
UA 623 Non-stop Airbus A319 (319) 1:58 Effective 2025-05-03 through 2025-05-17
Daily 14:00 Chicago O'Hare (ORD) 1 17:49 Tampa (TPA)
UA 623 Non-stop Boeing 737-900 (739) 2:49 Effective 2025-09-25 through 2025-10-25
Sat 18:51 George Bush, Houston (IAH) C 22:07 Atlanta (ATL) N
UA 623 Non-stop Airbus A319 (319) 2:16 Effective 2025-06-28 through 2025-08-16
Non-Direct Flights:
Daily 09:00 New York LaGuardia (LGA) B 14:11 Nashville (BNA)
UA 623 1-stop Boeing 737-800 (738) 6:11 Effective from 2025-10-26
Daily 09:18 New York LaGuardia (LGA) B 17:49 Tampa (TPA)
UA 623 1-stop Boeing 737 MAX 8 (7M8) 8:31 Effective 2025-09-25 through 2025-10-25
This flight number is listed as serving the following routes:


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United Airlines flight UA 623: Multiple routes
Select flight date:
FLIGHT SCHEDULE
Direct Flights:
United Airlines UA623
09:00
New York LaGuardia (LGA) B

10:29
Chicago O'Hare (ORD) 1
Effective 2025-08-19 through 2025-09-24
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:29, non-stop
Boeing 737-800 (738)
United Airlines UA623
09:00
New York LaGuardia (LGA) B

10:29
Chicago O'Hare (ORD) 1
Effective from 2025-10-26
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:29, non-stop
Boeing 737-800 (738)
United Airlines UA623
09:15
New York LaGuardia (LGA) B

10:53
Chicago O'Hare (ORD) 1
Effective 2025-05-22 through 2025-05-30
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
-
Duration: 2:38, non-stop
Boeing 737-800 (738)
United Airlines UA623
09:15
New York LaGuardia (LGA) B

10:53
Chicago O'Hare (ORD) 1
Effective 2025-06-01 through 2025-08-18
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 2:38, non-stop
Boeing 737-800 (738)
United Airlines UA623
09:18
New York LaGuardia (LGA) B

10:55
Chicago O'Hare (ORD) 1
Effective 2025-09-25 through 2025-10-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:37, non-stop
Boeing 737 MAX 8 (7M8)
United Airlines UA623
09:30
New York LaGuardia (LGA) B

11:11
Chicago O'Hare (ORD) 1
Valid until 2025-05-21
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 2:41, non-stop
Boeing 737-800 (738)
United Airlines UA623
12:45
Chicago O'Hare (ORD) 1

14:11
Nashville (BNA)
Effective from 2025-10-26
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:26, non-stop
Airbus A319 (319)
United Airlines UA623
13:20
Reno (RNO)

18:58
George Bush, Houston (IAH) C
Effective 2025-05-24 through 2025-05-31
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 3:38, non-stop
Boeing 737-700 (73G)
United Airlines UA623
13:20
Reno (RNO)

18:58
George Bush, Houston (IAH) C
Effective 2025-06-07 through 2025-06-21
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 3:38, non-stop
Airbus A320 (320)
United Airlines UA623
13:55
Kansas City (MCI)

14:53
Denver (DEN)
Effective 2025-05-03 through 2025-05-17
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:58, non-stop
Airbus A319 (319)
United Airlines UA623
14:00
Chicago O'Hare (ORD) 1

17:49
Tampa (TPA)
Effective 2025-09-25 through 2025-10-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:49, non-stop
Boeing 737-900 (739)
United Airlines UA623
18:51
George Bush, Houston (IAH) C

22:07
Atlanta (ATL) N
Effective 2025-06-28 through 2025-08-16
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:16, non-stop
Airbus A319 (319)
Non-Direct Flights:
United Airlines UA623
09:00
New York LaGuardia (LGA) B

14:11
Nashville (BNA)
Effective from 2025-10-26
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 6:11, 1-stop
Boeing 737-800 (738)
United Airlines UA623
09:18
New York LaGuardia (LGA) B

17:49
Tampa (TPA)
Effective 2025-09-25 through 2025-10-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 8:31, 1-stop
Boeing 737 MAX 8 (7M8)
This flight number is listed as serving the following routes:
  • Chicago O'Hare (ORD) - Nashville (BNA)
  • Chicago O'Hare (ORD) - Tampa (TPA)
  • George Bush, Houston (IAH) - Atlanta (ATL)
  • Kansas City (MCI) - Denver (DEN)
  • New York LaGuardia (LGA) - Chicago O'Hare (ORD)
  • New York LaGuardia (LGA) - Nashville (BNA)
  • New York LaGuardia (LGA) - Tampa (TPA)
  • Reno (RNO) - George Bush, Houston (IAH)
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