United Airlines flight UA 1233: Multiple routes

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FLIGHT SCHEDULE
Direct Flights:
Thu 07:00 San Jose (SJC) A 10:33 Denver (DEN)
UA 1233 Non-stop Boeing 737-800 (738) 2:33 Operates only on 2025-06-26
Daily 07:00 San Jose (SJC) A 10:33 Denver (DEN)
UA 1233 Non-stop Airbus A320 (320) 2:33 Effective 2025-06-27 through 2025-07-04
Sat 07:00 San Jose (SJC) A 10:33 Denver (DEN)
UA 1233 Non-stop Boeing 737 MAX 8 (7M8) 2:33 Operates only on 2025-07-05
Daily 07:00 San Jose (SJC) A 10:33 Denver (DEN)
UA 1233 Non-stop Airbus A320 (320) 2:33 Effective 2025-07-06 through 2025-08-18
Sat 07:59 Newark Liberty, New York (EWR) A 11:00 Fort Myers (RSW)
UA 1233 Non-stop Boeing 737 MAX 8 (7M8) 3:01 Effective 2025-05-24 through 2025-05-31
Sat,Sun 07:59 Newark Liberty, New York (EWR) C 11:00 Fort Myers (RSW)
UA 1233 Non-stop Boeing 737 MAX 8 (7M8) 3:01 Effective 2025-06-07 through 2025-06-14
Mon-Thu,Sun 08:00 Newark Liberty, New York (EWR) A 11:01 Fort Myers (RSW)
UA 1233 Non-stop Boeing 737 MAX 8 (7M8) 3:01 Effective 2025-05-22 through 2025-05-29
Fri 08:00 Newark Liberty, New York (EWR) A 11:01 Fort Myers (RSW)
UA 1233 Non-stop Boeing 737 MAX 9 (7M9) 3:01 Effective 2025-05-23 through 2025-05-30
Mon-Fri,Sun 08:00 Newark Liberty, New York (EWR) C 11:01 Fort Myers (RSW)
UA 1233 Non-stop Boeing 737 MAX 8 (7M8) 3:01 Effective 2025-06-01 through 2025-06-06
Mon-Thu,Sun 08:00 Newark Liberty, New York (EWR) C 11:01 Fort Myers (RSW)
UA 1233 Non-stop Boeing 737 MAX 8 (7M8) 3:01 Effective 2025-06-09 through 2025-06-19
Fri 08:00 Newark Liberty, New York (EWR) C 11:01 Fort Myers (RSW)
UA 1233 Non-stop Boeing 737 MAX 9 (7M9) 3:01 Effective 2025-06-13 through 2025-06-20
Mon-Wed,Sat,Sun 08:00 Newark Liberty, New York (EWR) C 11:01 Fort Myers (RSW)
UA 1233 Non-stop Boeing 737 MAX 8 (7M8) 3:01 Effective 2025-06-21 through 2025-06-25
Daily 09:05 Louisville (SDF) 10:04 Denver (DEN)
UA 1233 Non-stop Airbus A319 (319) 2:59 Effective 2025-10-26 through 2026-01-05
Daily 09:05 Louisville (SDF) 10:04 Denver (DEN)
UA 1233 Non-stop Airbus A319 (319) 2:59 Effective from 2026-02-12
Daily 09:06 Louisville (SDF) 10:05 Denver (DEN)
UA 1233 Non-stop Airbus A320 (320) 2:59 Effective 2025-09-25 through 2025-10-25
Wed,Sun 11:15 Denver (DEN) 17:08 Newark Liberty, New York (EWR) C
UA 1233 Non-stop Boeing 737-900 (739) 3:53 Effective 2025-06-29 through 2025-07-27
Wed 11:15 Denver (DEN) 17:08 Newark Liberty, New York (EWR) C
UA 1233 Non-stop Airbus A321neo (32Q) 3:53 Effective 2025-07-30 through 2025-08-13
Sun 11:15 Denver (DEN) 17:08 Newark Liberty, New York (EWR) C
UA 1233 Non-stop Boeing 737-900 (739) 3:53 Effective 2025-08-03 through 2025-08-17
Daily 11:15 Denver (DEN) 17:01 Newark Liberty, New York (EWR) C
UA 1233 Non-stop Airbus A321neo (32Q) 3:46 Effective 2025-08-19 through 2025-09-24
Mon,Tue,Thu-Sat 11:30 Denver (DEN) 17:23 Newark Liberty, New York (EWR) C
UA 1233 Non-stop Airbus A321neo (32Q) 3:53 Effective 2025-06-26 through 2025-08-18
Daily 11:30 Denver (DEN) 17:20 Newark Liberty, New York (EWR) C
UA 1233 Non-stop Airbus A321neo (32Q) 3:50 Effective 2025-09-25 through 2025-10-25
Daily 11:30 Denver (DEN) 17:16 Newark Liberty, New York (EWR) C
UA 1233 Non-stop Boeing 757-200 (752) 3:46 Effective from 2025-10-26
Daily 11:50 Denver (DEN) 17:44 Newark Liberty, New York (EWR) C
UA 1233 Non-stop Boeing 757-200 (752) 3:54 Valid until 2025-05-21
Daily 18:30 Newark Liberty, New York (EWR) C 19:53 Boston Logan (BOS) B
UA 1233 Non-stop Boeing 737 MAX 8 (7M8) 1:23 Effective 2025-09-25 through 2025-10-25
Sat 20:45 Newark Liberty, New York (EWR) C 22:03 Boston Logan (BOS) B
UA 1233 Non-stop Boeing 737-700 (73G) 1:18 Effective 2025-12-20 through 2026-01-03
Non-Direct Flights:
Thu 07:00 San Jose (SJC) A 17:23 Newark Liberty, New York (EWR) C
UA 1233 1-stop Boeing 737-800 (738) 7:23 Operates only on 2025-06-26
Mon,Tue,Thu-Sat 07:00 San Jose (SJC) A 17:23 Newark Liberty, New York (EWR) C
UA 1233 1-stop Airbus A320 (320) 7:23 Effective 2025-06-27 through 2025-07-04
Wed,Sun 07:00 San Jose (SJC) A 17:08 Newark Liberty, New York (EWR) C
UA 1233 1-stop Airbus A320 (320) 7:08 Effective 2025-06-29 through 2025-08-17
Sat 07:00 San Jose (SJC) A 17:23 Newark Liberty, New York (EWR) C
UA 1233 1-stop Boeing 737 MAX 8 (7M8) 7:23 Operates only on 2025-07-05
Mon,Tue,Thu-Sat 07:00 San Jose (SJC) A 17:23 Newark Liberty, New York (EWR) C
UA 1233 1-stop Airbus A320 (320) 7:23 Effective 2025-07-07 through 2025-08-18
Daily 09:05 Louisville (SDF) 17:16 Newark Liberty, New York (EWR) C
UA 1233 1-stop Airbus A319 (319) 8:11 Effective 2025-10-26 through 2026-01-05
Daily 09:05 Louisville (SDF) 17:16 Newark Liberty, New York (EWR) C
UA 1233 1-stop Airbus A319 (319) 8:11 Effective from 2026-02-12
Daily 09:06 Louisville (SDF) 17:20 Newark Liberty, New York (EWR) C
UA 1233 1-stop Airbus A320 (320) 8:14 Effective 2025-09-25 through 2025-10-25
Daily 11:30 Denver (DEN) 19:53 Boston Logan (BOS) B
UA 1233 1-stop Airbus A321neo (32Q) 6:23 Effective 2025-09-25 through 2025-10-25
Sat 11:30 Denver (DEN) 22:03 Boston Logan (BOS) B
UA 1233 1-stop Boeing 757-200 (752) 8:33 Effective 2025-12-20 through 2026-01-03
Sat 09:05 Louisville (SDF) 22:03 Boston Logan (BOS) B
UA 1233 2-stop Airbus A319 (319) 12:58 Effective 2025-12-20 through 2026-01-03
Daily 09:06 Louisville (SDF) 19:53 Boston Logan (BOS) B
UA 1233 2-stop Airbus A320 (320) 10:47 Effective 2025-09-25 through 2025-10-25
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This flight number is listed as serving the following routes:


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United Airlines flight UA 1233: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
United Airlines UA1233
07:00
San Jose (SJC) A

10:33
Denver (DEN)
Operates only on 2025-06-26
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 2:33, non-stop
Boeing 737-800 (738)
United Airlines UA1233
07:00
San Jose (SJC) A

10:33
Denver (DEN)
Effective 2025-06-27 through 2025-07-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:33, non-stop
Airbus A320 (320)
United Airlines UA1233
07:00
San Jose (SJC) A

10:33
Denver (DEN)
Operates only on 2025-07-05
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 2:33, non-stop
Boeing 737 MAX 8 (7M8)
United Airlines UA1233
07:00
San Jose (SJC) A

10:33
Denver (DEN)
Effective 2025-07-06 through 2025-08-18
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:33, non-stop
Airbus A320 (320)
United Airlines UA1233
07:59
Newark Liberty, New York (EWR) A

11:00
Fort Myers (RSW)
Effective 2025-05-24 through 2025-05-31
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 3:01, non-stop
Boeing 737 MAX 8 (7M8)
United Airlines UA1233
07:59
Newark Liberty, New York (EWR) C

11:00
Fort Myers (RSW)
Effective 2025-06-07 through 2025-06-14
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
Duration: 3:01, non-stop
Boeing 737 MAX 8 (7M8)
United Airlines UA1233
08:00
Newark Liberty, New York (EWR) A

11:01
Fort Myers (RSW)
Effective 2025-05-22 through 2025-05-29
Mon
Tue
Wed
Thu
Fri
-
Sat
-
Sun
Duration: 3:01, non-stop
Boeing 737 MAX 8 (7M8)
United Airlines UA1233
08:00
Newark Liberty, New York (EWR) A

11:01
Fort Myers (RSW)
Effective 2025-05-23 through 2025-05-30
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 3:01, non-stop
Boeing 737 MAX 9 (7M9)
United Airlines UA1233
08:00
Newark Liberty, New York (EWR) C

11:01
Fort Myers (RSW)
Effective 2025-06-01 through 2025-06-06
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 3:01, non-stop
Boeing 737 MAX 8 (7M8)
United Airlines UA1233
08:00
Newark Liberty, New York (EWR) C

11:01
Fort Myers (RSW)
Effective 2025-06-09 through 2025-06-19
Mon
Tue
Wed
Thu
Fri
-
Sat
-
Sun
Duration: 3:01, non-stop
Boeing 737 MAX 8 (7M8)
United Airlines UA1233
08:00
Newark Liberty, New York (EWR) C

11:01
Fort Myers (RSW)
Effective 2025-06-13 through 2025-06-20
Mon
-
Tue
-
Wed
-
Thu
-
Fri
Sat
-
Sun
-
Duration: 3:01, non-stop
Boeing 737 MAX 9 (7M9)
United Airlines UA1233
08:00
Newark Liberty, New York (EWR) C

11:01
Fort Myers (RSW)
Effective 2025-06-21 through 2025-06-25
Mon
Tue
Wed
Thu
-
Fri
-
Sat
Sun
Duration: 3:01, non-stop
Boeing 737 MAX 8 (7M8)
United Airlines UA1233
09:05
Louisville (SDF)

10:04
Denver (DEN)
Effective 2025-10-26 through 2026-01-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:59, non-stop
Airbus A319 (319)
United Airlines UA1233
09:05
Louisville (SDF)

10:04
Denver (DEN)
Effective from 2026-02-12
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:59, non-stop
Airbus A319 (319)
United Airlines UA1233
09:06
Louisville (SDF)

10:05
Denver (DEN)
Effective 2025-09-25 through 2025-10-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:59, non-stop
Airbus A320 (320)
United Airlines UA1233
11:15
Denver (DEN)

17:08
Newark Liberty, New York (EWR) C
Effective 2025-06-29 through 2025-07-27
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
Duration: 3:53, non-stop
Boeing 737-900 (739)
United Airlines UA1233
11:15
Denver (DEN)

17:08
Newark Liberty, New York (EWR) C
Effective 2025-07-30 through 2025-08-13
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 3:53, non-stop
Airbus A321neo (32Q)
United Airlines UA1233
11:15
Denver (DEN)

17:08
Newark Liberty, New York (EWR) C
Effective 2025-08-03 through 2025-08-17
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 3:53, non-stop
Boeing 737-900 (739)
United Airlines UA1233
11:15
Denver (DEN)

17:01
Newark Liberty, New York (EWR) C
Effective 2025-08-19 through 2025-09-24
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 3:46, non-stop
Airbus A321neo (32Q)
United Airlines UA1233
11:30
Denver (DEN)

17:23
Newark Liberty, New York (EWR) C
Effective 2025-06-26 through 2025-08-18
Mon
Tue
Wed
-
Thu
Fri
Sat
Sun
-
Duration: 3:53, non-stop
Airbus A321neo (32Q)
United Airlines UA1233
11:30
Denver (DEN)

17:20
Newark Liberty, New York (EWR) C
Effective 2025-09-25 through 2025-10-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 3:50, non-stop
Airbus A321neo (32Q)
United Airlines UA1233
11:30
Denver (DEN)

17:16
Newark Liberty, New York (EWR) C
Effective from 2025-10-26
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 3:46, non-stop
Boeing 757-200 (752)
United Airlines UA1233
11:50
Denver (DEN)

17:44
Newark Liberty, New York (EWR) C
Valid until 2025-05-21
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 3:54, non-stop
Boeing 757-200 (752)
United Airlines UA1233
18:30
Newark Liberty, New York (EWR) C

19:53
Boston Logan (BOS) B
Effective 2025-09-25 through 2025-10-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 1:23, non-stop
Boeing 737 MAX 8 (7M8)
United Airlines UA1233
20:45
Newark Liberty, New York (EWR) C

22:03
Boston Logan (BOS) B
Effective 2025-12-20 through 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 1:18, non-stop
Boeing 737-700 (73G)
Non-Direct Flights:
United Airlines UA1233
07:00
San Jose (SJC) A

17:23
Newark Liberty, New York (EWR) C
Operates only on 2025-06-26
Mon
-
Tue
-
Wed
-
Thu
Fri
-
Sat
-
Sun
-
Duration: 7:23, 1-stop
Boeing 737-800 (738)
United Airlines UA1233
07:00
San Jose (SJC) A

17:23
Newark Liberty, New York (EWR) C
Effective 2025-06-27 through 2025-07-04
Mon
Tue
Wed
-
Thu
Fri
Sat
Sun
-
Duration: 7:23, 1-stop
Airbus A320 (320)
United Airlines UA1233
07:00
San Jose (SJC) A

17:08
Newark Liberty, New York (EWR) C
Effective 2025-06-29 through 2025-08-17
Mon
-
Tue
-
Wed
Thu
-
Fri
-
Sat
-
Sun
Duration: 7:08, 1-stop
Airbus A320 (320)
United Airlines UA1233
07:00
San Jose (SJC) A

17:23
Newark Liberty, New York (EWR) C
Operates only on 2025-07-05
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 7:23, 1-stop
Boeing 737 MAX 8 (7M8)
United Airlines UA1233
07:00
San Jose (SJC) A

17:23
Newark Liberty, New York (EWR) C
Effective 2025-07-07 through 2025-08-18
Mon
Tue
Wed
-
Thu
Fri
Sat
Sun
-
Duration: 7:23, 1-stop
Airbus A320 (320)
United Airlines UA1233
09:05
Louisville (SDF)

17:16
Newark Liberty, New York (EWR) C
Effective 2025-10-26 through 2026-01-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 8:11, 1-stop
Airbus A319 (319)
United Airlines UA1233
09:05
Louisville (SDF)

17:16
Newark Liberty, New York (EWR) C
Effective from 2026-02-12
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 8:11, 1-stop
Airbus A319 (319)
United Airlines UA1233
09:06
Louisville (SDF)

17:20
Newark Liberty, New York (EWR) C
Effective 2025-09-25 through 2025-10-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 8:14, 1-stop
Airbus A320 (320)
United Airlines UA1233
11:30
Denver (DEN)

19:53
Boston Logan (BOS) B
Effective 2025-09-25 through 2025-10-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 6:23, 1-stop
Airbus A321neo (32Q)
United Airlines UA1233
11:30
Denver (DEN)

22:03
Boston Logan (BOS) B
Effective 2025-12-20 through 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 8:33, 1-stop
Boeing 757-200 (752)
United Airlines UA1233
09:05
Louisville (SDF)

22:03
Boston Logan (BOS) B
Effective 2025-12-20 through 2026-01-03
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
Sun
-
Duration: 12:58, 2-stop
Airbus A319 (319)
United Airlines UA1233
09:06
Louisville (SDF)

19:53
Boston Logan (BOS) B
Effective 2025-09-25 through 2025-10-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 10:47, 2-stop
Airbus A320 (320)
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This flight number is listed as serving the following routes:
  • Denver (DEN) - Boston Logan (BOS)
  • Denver (DEN) - Newark Liberty, New York (EWR)
  • Louisville (SDF) - Boston Logan (BOS)
  • Louisville (SDF) - Denver (DEN)
  • Louisville (SDF) - Newark Liberty, New York (EWR)
  • Newark Liberty, New York (EWR) - Boston Logan (BOS)
  • Newark Liberty, New York (EWR) - Fort Myers (RSW)
  • San Jose (SJC) - Denver (DEN)
  • San Jose (SJC) - Newark Liberty, New York (EWR)
All United Airlines flights
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