Air New Zealand
flight
NZ 6644:
Washington Dulles - Houston George Bush
Washington Dulles - Houston George Bush
FLIGHT SCHEDULE
Direct Codeshare Flights:
Air New Zealand NZ6644
Effective 2026-01-11 through 2026-02-08
Mon
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Tue
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Wed
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Thu
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Fri
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Sat
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Sun
Codeshare flight, operated by United Airlines.
(UA 1506)
Duration: 3:42, non-stop Airbus A319 (319)
Direct Codeshare Flights:
Air New Zealand NZ6644
Effective 2026-03-05 through 2026-03-28
Mon
Tue
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-
Wed
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Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines.
(UA 1409)
Duration: 3:36, non-stop Boeing 737 MAX 9 (7M9)
Direct Codeshare Flights:
Air New Zealand NZ6644
Effective 2026-03-29 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines.
(UA 2346)
Duration: 3:26, non-stop Boeing 737 MAX 9 (7M9)
Direct Codeshare Flights:
Air New Zealand NZ6644
Effective 2026-02-15 through 2026-03-01
Mon
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Tue
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Wed
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Thu
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Fri
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Sat
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-
Sun
Codeshare flight, operated by United Airlines.
(UA 2851)
Duration: 3:36, non-stop Boeing 737 MAX 8 (7M8)
Direct Codeshare Flights:
Air New Zealand NZ6644
Operates only on 2026-01-06
Mon
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Tue
Wed
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Thu
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Fri
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Sat
-
-
Sun
-
-
Codeshare flight, operated by United Airlines.
(UA 1506)
Duration: 3:42, non-stop Boeing 737 MAX 9 (7M9)
Direct Codeshare Flights:
Air New Zealand NZ6644
Effective 2026-01-07 through 2026-02-03
Mon
Tue
Wed
Thu
Fri
Sat
Sun
-
-
Codeshare flight, operated by United Airlines.
(UA 1506)
Duration: 3:42, non-stop Airbus A320 (320)
Direct Codeshare Flights:
Air New Zealand NZ6644
Effective 2026-02-05 through 2026-02-11
Mon
Tue
Wed
Thu
Fri
Sat
Sun
-
-
Codeshare flight, operated by United Airlines.
(UA 1506)
Duration: 3:42, non-stop Airbus A320 (320)
Direct Codeshare Flights:
Air New Zealand NZ6644
Effective 2026-02-12 through 2026-02-23
Mon
Tue
Wed
Thu
Fri
Sat
Sun
-
-
Codeshare flight, operated by United Airlines.
(UA 2851)
Duration: 3:36, non-stop Boeing 737-800 (738)
Direct Codeshare Flights:
Air New Zealand NZ6644
Effective 2026-02-24 through 2026-03-03
Mon
-
-
Tue
Wed
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Thu
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Fri
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-
Sat
-
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Sun
-
-
Codeshare flight, operated by United Airlines.
(UA 2851)
Duration: 3:36, non-stop Boeing 737 MAX 8 (7M8)
Direct Codeshare Flights:
Air New Zealand NZ6644
Effective 2026-02-25 through 2026-03-04
Mon
Tue
-
-
Wed
Thu
Fri
Sat
Sun
-
-
Codeshare flight, operated by United Airlines.
(UA 2851)
Duration: 3:36, non-stop Boeing 737-800 (738)
Direct Codeshare Flights:
Air New Zealand NZ6644
Valid until 2026-01-05
Mon
Tue
Wed
Thu
Fri
Sat
-
-
Sun
Codeshare flight, operated by United Airlines.
(UA 1506)
Duration: 3:42, non-stop Airbus A320 (320)
Direct Codeshare Flights:
Air New Zealand NZ6644
Operates only on 2026-01-03
Mon
-
-
Tue
-
-
Wed
-
-
Thu
-
-
Fri
-
-
Sat
Sun
-
-
Codeshare flight, operated by United Airlines.
(UA 1506)
Duration: 3:42, non-stop Airbus A319 (319)
Direct Codeshare Flights:
Air New Zealand NZ6644
Effective from 2026-05-21
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines.
(UA 2346)
Duration: 3:06, non-stop Boeing 737-900 (739)
- NZ 6644 is a domestic flight departing from the Washington Dulles airport (IAD) and arriving at Houston George Bush airport (IAH).
- The flight distance is 1188 miles, or 1912 km.
- The timezone of the departure airport is UTC-5 , 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 3:06 and 3:42.