United Airlines flight UA 1644: Luis Munoz Marin, San Juan - George Bush, Houston

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FLIGHT SCHEDULE
Direct Flights:
Daily 06:45 Luis Munoz Marin, San Juan (SJU) B 10:52 George Bush, Houston (IAH) C
UA 1644 Non-stop Boeing 737-900 (739) 5:07 Effective 2025-10-26 through 2025-11-01
Daily 07:00 Luis Munoz Marin, San Juan (SJU) B 10:51 George Bush, Houston (IAH) C
UA 1644 Non-stop Boeing 737 MAX 9 (7M9) 4:51 Valid until 2025-05-24
Sun 07:00 Luis Munoz Marin, San Juan (SJU) B 10:49 George Bush, Houston (IAH) C
UA 1644 Non-stop Boeing 737 MAX 9 (7M9) 4:49 Effective 2025-05-25 through 2025-06-22
Mon-Sat 07:00 Luis Munoz Marin, San Juan (SJU) B 10:51 George Bush, Houston (IAH) C
UA 1644 Non-stop Boeing 737 MAX 9 (7M9) 4:51 Effective 2025-05-26 through 2025-06-28
Daily 07:00 Luis Munoz Marin, San Juan (SJU) B 10:51 George Bush, Houston (IAH) C
UA 1644 Non-stop Boeing 737 MAX 9 (7M9) 4:51 Effective 2025-06-29 through 2025-08-18
Daily 07:00 Luis Munoz Marin, San Juan (SJU) B 10:51 George Bush, Houston (IAH) C
UA 1644 Non-stop Boeing 737-900 (739) 4:51 Effective 2025-08-19 through 2025-10-25
Daily 07:45 Luis Munoz Marin, San Juan (SJU) B 10:52 George Bush, Houston (IAH) C
UA 1644 Non-stop Boeing 737-900 (739) 5:07 Effective 2025-11-02 through 2026-01-06
Daily 07:45 Luis Munoz Marin, San Juan (SJU) B 10:54 George Bush, Houston (IAH) C
UA 1644 Non-stop Boeing 737-900 (739) 5:09 Effective 2026-01-07 through 2026-02-12
Daily 07:45 Luis Munoz Marin, San Juan (SJU) B 10:52 George Bush, Houston (IAH) C
UA 1644 Non-stop Boeing 737-900 (739) 5:07 Effective from 2026-02-13
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United Airlines flight UA 1644:
Luis Munoz Marin, San Juan - George Bush, Houston
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Select flight date:
FLIGHT SCHEDULE
Direct Flights:

United Airlines UA1644
Effective 2025-10-26 through 2025-11-01
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 5:07, non-stop
Boeing 737-900 (739)

United Airlines UA1644
Valid until 2025-05-24
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 4:51, non-stop
Boeing 737 MAX 9 (7M9)

United Airlines UA1644
Effective 2025-05-25 through 2025-06-22
Mon
-
Tue
-
Wed
-
Thu
-
Fri
-
Sat
-
Sun
Duration: 4:49, non-stop
Boeing 737 MAX 9 (7M9)

United Airlines UA1644
Effective 2025-05-26 through 2025-06-28
Mon
Tue
Wed
Thu
Fri
Sat
Sun
-
Duration: 4:51, non-stop
Boeing 737 MAX 9 (7M9)

United Airlines UA1644
Effective 2025-06-29 through 2025-08-18
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 4:51, non-stop
Boeing 737 MAX 9 (7M9)

United Airlines UA1644
Effective 2025-08-19 through 2025-10-25
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 4:51, non-stop
Boeing 737-900 (739)

United Airlines UA1644
Effective 2025-11-02 through 2026-01-06
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 5:07, non-stop
Boeing 737-900 (739)

United Airlines UA1644
Effective 2026-01-07 through 2026-02-12
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 5:09, non-stop
Boeing 737-900 (739)

United Airlines UA1644
Effective from 2026-02-13
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Duration: 5:07, non-stop
Boeing 737-900 (739)
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  • UA 1644 is an international flight departing from Luis Munoz Marin, San Juan airport, Puerto Rico (SJU) and arriving at George Bush, Houston airport, United States (IAH).
  • The flight distance is 2004 miles, or 3225 km.
  • The timezone of the departure airport is UTC-4 , and the timezone of the arrival airport is UTC-6 . Current time at the point of departure is (loading...), and (loading...) at the point of arrival. There is a (loading...) hour time difference between the airports.
  • For direct flights, the flight time varies between 4:49 and 5:09.