Air New Zealand
flight
NZ 6503:
Denver - Houston George Bush
Denver - Houston George Bush
FLIGHT SCHEDULE
Direct Codeshare Flights:
Air New Zealand NZ6503
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
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Sun
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Codeshare flight, operated by United Airlines.
(UA 489)
Duration: 2:31, non-stop Airbus A321neo (32Q)
Direct Codeshare Flights:
Air New Zealand NZ6503
Effective 2026-01-07 through 2026-02-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines.
(UA 236)
Duration: 2:31, non-stop Boeing 737-900 (739)
Direct Codeshare Flights:
Air New Zealand NZ6503
Effective 2026-02-06 through 2026-02-11
Mon
Tue
Wed
Thu
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-
Fri
Sat
Sun
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-
Codeshare flight, operated by United Airlines.
(UA 236)
Duration: 2:31, non-stop Airbus A321neo (32Q)
Direct Codeshare Flights:
Air New Zealand NZ6503
Operates only on 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 236)
Duration: 2:31, non-stop Boeing 737-900 (739)
Direct Codeshare Flights:
Air New Zealand NZ6503
Effective 2026-03-29 through 2026-04-29
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines.
(UA 588)
Duration: 2:36, non-stop Boeing 737-900 (739)
Direct Codeshare Flights:
Air New Zealand NZ6503
Effective 2026-04-30 through 2026-05-20
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines.
(UA 588)
Duration: 2:20, non-stop Boeing 737-900 (739)
Direct Codeshare Flights:
Air New Zealand NZ6503
Effective 2026-03-05 through 2026-03-28
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines.
(UA 588)
Duration: 2:30, non-stop Boeing 737-900 (739)
Direct Codeshare Flights:
Air New Zealand NZ6503
Effective 2026-05-21 through 2026-05-28
Mon
Tue
Wed
Thu
Fri
-
-
Sat
-
-
Sun
-
-
Codeshare flight, operated by United Airlines.
(UA 588)
Duration: 2:30, non-stop Boeing 737-900 (739)
Direct Codeshare Flights:
Air New Zealand NZ6503
Effective 2026-05-29 through 2026-06-05
Mon
Tue
Wed
Thu
Fri
Sat
-
-
Sun
-
-
Codeshare flight, operated by United Airlines.
(UA 588)
Duration: 2:30, non-stop Boeing 737-900 (739)
Direct Codeshare Flights:
Air New Zealand NZ6503
Effective 2026-06-06 through 2026-06-13
Mon
-
-
Tue
-
-
Wed
Thu
Fri
Sat
Sun
-
-
Codeshare flight, operated by United Airlines.
(UA 588)
Duration: 2:30, non-stop Boeing 737-900 (739)
Direct Codeshare Flights:
Air New Zealand NZ6503
Effective 2026-06-14 through 2026-06-21
Mon
-
-
Tue
-
-
Wed
-
-
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines.
(UA 588)
Duration: 2:30, non-stop Boeing 737-900 (739)
Direct Codeshare Flights:
Air New Zealand NZ6503
Effective 2026-06-22 through 2026-06-29
Mon
Tue
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-
Wed
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Thu
-
-
Fri
-
-
Sat
Sun
Codeshare flight, operated by United Airlines.
(UA 588)
Duration: 2:30, non-stop Boeing 737-900 (739)
Direct Codeshare Flights:
Air New Zealand NZ6503
Effective 2026-06-30 through 2026-07-09
Mon
Tue
Wed
Thu
Fri
-
-
Sat
-
-
Sun
-
-
Codeshare flight, operated by United Airlines.
(UA 588)
Duration: 2:30, non-stop Boeing 737-900 (739)
Direct Codeshare Flights:
Air New Zealand NZ6503
Effective 2026-07-10 through 2026-07-17
Mon
-
-
Tue
Wed
Thu
Fri
Sat
-
-
Sun
-
-
Codeshare flight, operated by United Airlines.
(UA 588)
Duration: 2:30, non-stop Boeing 737-900 (739)
Direct Codeshare Flights:
Air New Zealand NZ6503
Effective from 2026-07-18
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines.
(UA 588)
Duration: 2:30, non-stop Boeing 737-900 (739)
Direct Codeshare Flights:
Air New Zealand NZ6503
Effective 2026-05-22 through 2026-05-24
Mon
-
-
Tue
-
-
Wed
-
-
Thu
-
-
Fri
Sat
Sun
Codeshare flight, operated by United Airlines.
(UA 1587)
Duration: 2:20, non-stop Boeing 757-300 (753)
Direct Codeshare Flights:
Air New Zealand NZ6503
Effective 2026-05-30 through 2026-05-31
Mon
-
-
Tue
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Wed
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Thu
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Fri
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-
Sat
Sun
Codeshare flight, operated by United Airlines.
(UA 1587)
Duration: 2:20, non-stop Boeing 757-300 (753)
Direct Codeshare Flights:
Air New Zealand NZ6503
Effective 2026-06-07 through 2026-06-09
Mon
Tue
Wed
-
-
Thu
-
-
Fri
-
-
Sat
-
-
Sun
Codeshare flight, operated by United Airlines.
(UA 1587)
Duration: 2:20, non-stop Boeing 757-300 (753)
Direct Codeshare Flights:
Air New Zealand NZ6503
Effective 2026-06-15 through 2026-06-17
Mon
Tue
Wed
Thu
-
-
Fri
-
-
Sat
-
-
Sun
-
-
Codeshare flight, operated by United Airlines.
(UA 1587)
Duration: 2:20, non-stop Boeing 757-300 (753)
Direct Codeshare Flights:
Air New Zealand NZ6503
Effective 2026-06-23 through 2026-06-26
Mon
-
-
Tue
Wed
Thu
Fri
Sat
-
-
Sun
-
-
Codeshare flight, operated by United Airlines.
(UA 1587)
Duration: 2:20, non-stop Boeing 757-300 (753)
Direct Codeshare Flights:
Air New Zealand NZ6503
Effective 2026-07-03 through 2026-07-05
Mon
-
-
Tue
-
-
Wed
-
-
Thu
-
-
Fri
Sat
Sun
Codeshare flight, operated by United Airlines.
(UA 1587)
Duration: 2:20, non-stop Boeing 757-300 (753)
Direct Codeshare Flights:
Air New Zealand NZ6503
Effective 2026-07-11 through 2026-07-13
Mon
Tue
-
-
Wed
-
-
Thu
-
-
Fri
-
-
Sat
Sun
Codeshare flight, operated by United Airlines.
(UA 1587)
Duration: 2:20, non-stop Boeing 757-300 (753)
Direct Codeshare Flights:
Air New Zealand NZ6503
Valid until 2026-01-05
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines.
(UA 618)
Duration: 2:28, non-stop Airbus A321neo (32Q)
- NZ 6503 is a domestic flight departing from the Denver airport (DEN) and arriving at Houston George Bush airport (IAH).
- The flight distance is 861 miles, or 1386 km.
- The timezone of the departure airport is UTC-7 , 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 2:20 and 2:36.