United Airlines flight UA 638: Multiple routes

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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
Mon-Fri,Sun 14:13 New Orleans (MSY) 17:14 San Francisco (SFO) 3
UA 638 Non-stop Boeing 737-800 (738) 5:01 Valid until 2026-01-05
Tue 15:43 Philadelphia (PHL) D 18:12 Denver (DEN)
UA 638 Non-stop Boeing 737 MAX 8 (7M8) 4:29 Operates only on 2026-01-06
Daily 15:43 Philadelphia (PHL) D 18:12 Denver (DEN)
UA 638 Non-stop Boeing 737-900 (739) 4:29 Effective 2026-01-07 through 2026-02-11
Daily 18:30 San Francisco (SFO) 3 22:30 Honolulu (HNL) 2
UA 638 Non-stop Boeing 737 MAX 9 (7M9) 6:00 Valid until 2026-01-05
Daily 18:30 San Francisco (SFO) 3 21:18 Honolulu (HNL) 2
UA 638 Non-stop Boeing 737 MAX 9 (7M9) 5:48 Effective from 2026-10-25
Thu-Sat 18:55 San Francisco (SFO) 3 22:58 Honolulu (HNL) 2
UA 638 Non-stop Boeing 737 MAX 9 (7M9) 6:03 Effective 2026-03-05 through 2026-03-07
Daily 18:55 San Francisco (SFO) 3 21:58 Honolulu (HNL) 2
UA 638 Non-stop Boeing 737 MAX 9 (7M9) 6:03 Effective 2026-03-08 through 2026-03-28
Daily 19:10 San Francisco (SFO) 3 22:04 Honolulu (HNL) 2
UA 638 Non-stop Boeing 737 MAX 9 (7M9) 5:54 Effective 2026-03-29 through 2026-05-20
Daily 19:10 San Francisco (SFO) 3 21:42 Honolulu (HNL) 2
UA 638 Non-stop Boeing 757-300 (753) 5:32 Effective 2026-05-21 through 2026-08-10
Daily 19:10 San Francisco (SFO) 3 21:55 Honolulu (HNL) 2
UA 638 Non-stop Boeing 737 MAX 9 (7M9) 5:45 Effective 2026-09-24 through 2026-10-24
Daily 19:35 Denver (DEN) 21:19 Los Angeles (LAX) 7
UA 638 Non-stop Airbus A321neo (32Q) 2:44 Effective 2026-02-12 through 2026-03-04
Non-Direct Flights:
Mon-Fri,Sun 14:13 New Orleans (MSY) 22:30 Honolulu (HNL) 2
UA 638 1-stop Boeing 737-800 (738) 12:17 Valid until 2026-01-05
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This flight number is listed as serving the following routes:


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United Airlines flight UA 638: Multiple routes
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Select flight date:
FLIGHT SCHEDULE
Direct Flights:
United Airlines UA638
14:13
New Orleans (MSY)

17:14
San Francisco (SFO) 3
Valid until 2026-01-05
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 5:01, non-stop
Boeing 737-800 (738)
Direct Flights:
United Airlines UA638
15:43
Philadelphia (PHL) D

18:12
Denver (DEN)
Operates only on 2026-01-06
Mon
-
Tue
Wed
-
Thu
-
Fri
-
Sat
-
Sun
-
Duration: 4:29, non-stop
Boeing 737 MAX 8 (7M8)
Direct Flights:
United Airlines UA638
15:43
Philadelphia (PHL) D

18:12
Denver (DEN)
Effective 2026-01-07 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 4:29, non-stop
Boeing 737-900 (739)
Direct Flights:
United Airlines UA638
18:30
San Francisco (SFO) 3

22:30
Honolulu (HNL) 2
Valid until 2026-01-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 6:00, non-stop
Boeing 737 MAX 9 (7M9)
Direct Flights:
United Airlines UA638
18:30
San Francisco (SFO) 3

21:18
Honolulu (HNL) 2
Effective from 2026-10-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 5:48, non-stop
Boeing 737 MAX 9 (7M9)
Direct Flights:
United Airlines UA638
18:55
San Francisco (SFO) 3

22:58
Honolulu (HNL) 2
Effective 2026-03-05 through 2026-03-07
Mon
-
Tue
-
Wed
-
Thu
Fri
Sat
Sun
-
Duration: 6:03, non-stop
Boeing 737 MAX 9 (7M9)
Direct Flights:
United Airlines UA638
18:55
San Francisco (SFO) 3

21:58
Honolulu (HNL) 2
Effective 2026-03-08 through 2026-03-28
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 6:03, non-stop
Boeing 737 MAX 9 (7M9)
Direct Flights:
United Airlines UA638
19:10
San Francisco (SFO) 3

22:04
Honolulu (HNL) 2
Effective 2026-03-29 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 5:54, non-stop
Boeing 737 MAX 9 (7M9)
Direct Flights:
United Airlines UA638
19:10
San Francisco (SFO) 3

21:42
Honolulu (HNL) 2
Effective 2026-05-21 through 2026-08-10
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 5:32, non-stop
Boeing 757-300 (753)
Direct Flights:
United Airlines UA638
19:10
San Francisco (SFO) 3

21:55
Honolulu (HNL) 2
Effective 2026-09-24 through 2026-10-24
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 5:45, non-stop
Boeing 737 MAX 9 (7M9)
Direct Flights:
United Airlines UA638
19:35
Denver (DEN)

21:19
Los Angeles (LAX) 7
Effective 2026-02-12 through 2026-03-04
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 2:44, non-stop
Airbus A321neo (32Q)
Non-Direct Flights:
United Airlines UA638
14:13
New Orleans (MSY)

22:30
Honolulu (HNL) 2
Valid until 2026-01-05
Mon
Tue
Wed
Thu
Fri
Sat
-
Sun
Duration: 12:17, 1-stop
Boeing 737-800 (738)
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This flight number is listed as serving the following routes:
  • Denver (DEN) - Los Angeles (LAX)
  • New Orleans (MSY) - Honolulu (HNL)
  • New Orleans (MSY) - San Francisco (SFO)
  • Philadelphia (PHL) - Denver (DEN)
  • San Francisco (SFO) - Honolulu (HNL)
All United Airlines flights
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