Air New Zealand
flight
NZ 9421:
Seattle-Tacoma - San Francisco
Seattle-Tacoma - San Francisco
Ad mobi flat here (320x100px) 6074960173 M FlightWNum Top Flat
FLIGHT SCHEDULE
Direct Codeshare Flights:
Air New Zealand NZ9421
Effective 2026-08-11 through 2026-08-18
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 2121)
Duration: 2:18, non-stop Airbus A320 (320)
Direct Codeshare Flights:
Air New Zealand NZ9421
Effective 2026-08-19 through 2026-08-23
Mon
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Tue
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Wed
Thu
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Fri
Sat
-
-
Sun
Codeshare flight, operated by United Airlines.
(UA 2121)
Duration: 2:18, non-stop Airbus A320 (320)
Direct Codeshare Flights:
Air New Zealand NZ9421
Effective 2026-04-30 through 2026-05-06
Mon
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Tue
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Wed
Thu
Fri
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Sat
-
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Sun
-
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Codeshare flight, operated by United Airlines.
(UA 2121)
Duration: 2:19, non-stop Airbus A320 (320)
Direct Codeshare Flights:
Air New Zealand NZ9421
Effective 2026-05-09 through 2026-05-16
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
Sun
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Codeshare flight, operated by United Airlines.
(UA 2121)
Duration: 2:19, non-stop Airbus A320 (320)
Direct Codeshare Flights:
Air New Zealand NZ9421
Effective 2026-05-17 through 2026-05-20
Mon
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Tue
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Wed
Thu
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Fri
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Sat
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Sun
Codeshare flight, operated by United Airlines.
(UA 2121)
Duration: 2:19, non-stop Airbus A320 (320)
Direct Codeshare Flights:
Air New Zealand NZ9421
Effective 2026-03-29 through 2026-04-04
Mon
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Tue
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Wed
Thu
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Fri
Sat
Sun
Codeshare flight, operated by United Airlines.
(UA 2121)
Duration: 2:19, non-stop Airbus A320 (320)
Direct Codeshare Flights:
Air New Zealand NZ9421
Effective 2026-04-11 through 2026-04-18
Mon
-
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Tue
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Wed
Thu
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Fri
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-
Sat
Sun
-
-
Codeshare flight, operated by United Airlines.
(UA 2121)
Duration: 2:19, non-stop Airbus A320 (320)
Direct Codeshare Flights:
Air New Zealand NZ9421
Effective 2026-04-19 through 2026-04-26
Mon
-
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Tue
Wed
Thu
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Fri
-
-
Sat
Sun
Codeshare flight, operated by United Airlines.
(UA 2121)
Duration: 2:19, non-stop Airbus A320 (320)
Direct Codeshare Flights:
Air New Zealand NZ9421
Effective 2026-04-27 through 2026-04-29
Mon
Tue
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Wed
Thu
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Fri
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Sat
-
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Sun
-
-
Codeshare flight, operated by United Airlines.
(UA 2121)
Duration: 2:19, non-stop Airbus A320 (320)
Direct Codeshare Flights:
Air New Zealand NZ9421
Effective 2026-05-21 through 2026-05-26
Mon
Tue
Wed
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Thu
Fri
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Sat
-
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Sun
-
-
Codeshare flight, operated by United Airlines.
(UA 2121)
Duration: 2:18, non-stop Airbus A320 (320)
Direct Codeshare Flights:
Air New Zealand NZ9421
Effective 2026-05-30 through 2026-06-07
Mon
-
-
Tue
Wed
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-
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines.
(UA 2121)
Duration: 2:18, non-stop Airbus A320 (320)
Direct Codeshare Flights:
Air New Zealand NZ9421
Effective 2026-06-10 through 2026-06-17
Mon
Tue
Wed
Thu
-
-
Fri
Sat
Sun
Codeshare flight, operated by United Airlines.
(UA 2121)
Duration: 2:18, non-stop Airbus A320 (320)
Direct Codeshare Flights:
Air New Zealand NZ9421
Effective 2026-06-18 through 2026-06-25
Mon
-
-
Tue
Wed
Thu
Fri
-
-
Sat
Sun
-
-
Codeshare flight, operated by United Airlines.
(UA 2121)
Duration: 2:18, non-stop Airbus A320 (320)
Direct Codeshare Flights:
Air New Zealand NZ9421
Effective 2026-06-26 through 2026-07-03
Mon
-
-
Tue
-
-
Wed
-
-
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines.
(UA 2121)
Duration: 2:18, non-stop Airbus A320 (320)
Direct Codeshare Flights:
Air New Zealand NZ9421
Effective 2026-07-06 through 2026-07-12
Mon
Tue
-
-
Wed
-
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Thu
-
-
Fri
Sat
Sun
Codeshare flight, operated by United Airlines.
(UA 2121)
Duration: 2:18, non-stop Airbus A320 (320)
Direct Codeshare Flights:
Air New Zealand NZ9421
Effective 2026-07-14 through 2026-07-22
Mon
Tue
Wed
Thu
-
-
Fri
-
-
Sat
Sun
Codeshare flight, operated by United Airlines.
(UA 2121)
Duration: 2:18, non-stop Airbus A320 (320)
Direct Codeshare Flights:
Air New Zealand NZ9421
Effective 2026-07-23 through 2026-07-30
Mon
-
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Tue
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Wed
Thu
Fri
-
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Sat
-
-
Sun
-
-
Codeshare flight, operated by United Airlines.
(UA 2121)
Duration: 2:18, non-stop Airbus A320 (320)
Direct Codeshare Flights:
Air New Zealand NZ9421
Effective 2026-07-31 through 2026-08-05
Mon
-
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Tue
Wed
Thu
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-
Fri
Sat
-
-
Sun
Codeshare flight, operated by United Airlines.
(UA 2121)
Duration: 2:18, non-stop Airbus A320 (320)
Direct Codeshare Flights:
Air New Zealand NZ9421
Operates only on 2026-08-10
Mon
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
-
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Codeshare flight, operated by United Airlines.
(UA 2121)
Duration: 2:18, non-stop Airbus A320 (320)
Direct Codeshare Flights:
Air New Zealand NZ9421
Effective 2026-02-13 through 2026-02-20
Mon
Tue
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Wed
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Thu
Fri
Sat
Sun
-
-
Codeshare flight, operated by United Airlines.
(UA 1238)
Duration: 2:19, non-stop Airbus A320 (320)
Direct Codeshare Flights:
Air New Zealand NZ9421
Effective 2026-02-22 through 2026-02-28
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
Sun
Codeshare flight, operated by United Airlines.
(UA 1238)
Duration: 2:19, non-stop Airbus A320 (320)
Direct Codeshare Flights:
Air New Zealand NZ9421
Operates only on 2026-03-15
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 2367)
Duration: 2:19, non-stop Airbus A320 (320)
Direct Codeshare Flights:
Air New Zealand NZ9421
Operates only on 2026-03-23
Mon
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
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Codeshare flight, operated by United Airlines.
(UA 2367)
Duration: 2:19, non-stop Airbus A320 (320)
Direct Codeshare Flights:
Air New Zealand NZ9421
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 1372)
Duration: 2:18, non-stop Airbus A319 (319)
Direct Codeshare Flights:
Air New Zealand NZ9421
Effective 2026-01-07 through 2026-01-14
Mon
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Tue
Wed
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 1372)
Duration: 2:18, non-stop Boeing 737-800 (738)
Direct Codeshare Flights:
Air New Zealand NZ9421
Effective 2026-01-18 through 2026-01-24
Mon
Tue
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-
Wed
Thu
-
-
Fri
Sat
Sun
Codeshare flight, operated by United Airlines.
(UA 1372)
Duration: 2:18, non-stop Boeing 737-800 (738)
Direct Codeshare Flights:
Air New Zealand NZ9421
Effective 2026-01-26 through 2026-02-06
Mon
Tue
Wed
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Thu
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Fri
Sat
-
-
Sun
-
-
Codeshare flight, operated by United Airlines.
(UA 1372)
Duration: 2:18, non-stop Boeing 737-800 (738)
Direct Codeshare Flights:
Air New Zealand NZ9421
Effective 2026-02-08 through 2026-02-11
Mon
-
-
Tue
Wed
Thu
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-
Fri
-
-
Sat
-
-
Sun
Codeshare flight, operated by United Airlines.
(UA 1372)
Duration: 2:18, non-stop Boeing 737-800 (738)
Direct Codeshare Flights:
Air New Zealand NZ9421
Operates only on 2026-01-10
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
Sun
-
-
Codeshare flight, operated by United Airlines.
(UA 737)
Duration: 2:18, non-stop Airbus A320 (320)
Direct Codeshare Flights:
Air New Zealand NZ9421
Operates only on 2026-01-20
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
-
-
Codeshare flight, operated by United Airlines.
(UA 737)
Duration: 2:18, non-stop Airbus A320 (320)
Direct Codeshare Flights:
Air New Zealand NZ9421
Effective 2026-01-28 through 2026-02-04
Mon
-
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Tue
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Wed
Thu
Fri
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-
Sat
Sun
-
-
Codeshare flight, operated by United Airlines.
(UA 737)
Duration: 2:18, non-stop Airbus A320 (320)
Direct Codeshare Flights:
Air New Zealand NZ9421
Operates only on 2026-02-07
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
Sun
-
-
Codeshare flight, operated by United Airlines.
(UA 737)
Duration: 2:18, non-stop Airbus A320 (320)
Direct Codeshare Flights:
Air New Zealand NZ9421
Effective 2026-03-08 through 2026-03-11
Mon
-
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Tue
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Wed
Thu
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Fri
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Sat
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-
Sun
Codeshare flight, operated by United Airlines.
(UA 737)
Duration: 2:17, non-stop Boeing 737-800 (738)
Direct Codeshare Flights:
Air New Zealand NZ9421
Operates only on 2026-03-14
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
Sun
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-
Codeshare flight, operated by United Airlines.
(UA 737)
Duration: 2:17, non-stop Boeing 737 MAX 9 (7M9)
Direct Codeshare Flights:
Air New Zealand NZ9421
Effective 2026-03-16 through 2026-03-18
Mon
Tue
Wed
Thu
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Fri
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Sat
-
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Sun
-
-
Codeshare flight, operated by United Airlines.
(UA 737)
Duration: 2:17, non-stop Boeing 737-800 (738)
Direct Codeshare Flights:
Air New Zealand NZ9421
Operates only on 2026-03-26
Mon
-
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Tue
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Wed
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Thu
Fri
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Sat
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Sun
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Codeshare flight, operated by United Airlines.
(UA 737)
Duration: 2:17, non-stop Boeing 737-800 (738)
Direct Codeshare Flights:
Air New Zealand NZ9421
Valid until 2026-01-01
Mon
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Tue
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Wed
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Thu
Fri
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Sat
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Sun
-
-
Codeshare flight, operated by United Airlines.
(UA 737)
Duration: 2:18, non-stop Airbus A320 (320)
Direct Codeshare Flights:
Air New Zealand NZ9421
Effective 2026-02-15 through 2026-02-21
Mon
-
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Tue
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Wed
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Thu
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Fri
-
-
Sat
Sun
Codeshare flight, operated by United Airlines.
(UA 737)
Duration: 2:18, non-stop Airbus A319 (319)
Direct Codeshare Flights:
Air New Zealand NZ9421
Effective 2026-02-23 through 2026-02-24
Mon
Tue
Wed
-
-
Thu
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Fri
-
-
Sat
-
-
Sun
-
-
Codeshare flight, operated by United Airlines.
(UA 737)
Duration: 2:17, non-stop Boeing 737-800 (738)
Direct Codeshare Flights:
Air New Zealand NZ9421
Operates only on 2026-03-01
Mon
-
-
Tue
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Wed
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Thu
-
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Fri
-
-
Sat
-
-
Sun
Codeshare flight, operated by United Airlines.
(UA 737)
Duration: 2:18, non-stop Airbus A319 (319)
Direct Codeshare Flights:
Air New Zealand NZ9421
Effective 2026-01-08 through 2026-01-16
Mon
Tue
-
-
Wed
-
-
Thu
Fri
Sat
-
-
Sun
Codeshare flight, operated by United Airlines.
(UA 1665)
Duration: 2:18, non-stop Boeing 737-800 (738)
Direct Codeshare Flights:
Air New Zealand NZ9421
Operates only on 2026-01-22
Mon
-
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Tue
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Wed
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Thu
Fri
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Sat
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Sun
-
-
Codeshare flight, operated by United Airlines.
(UA 1665)
Duration: 2:18, non-stop Boeing 737-800 (738)
Direct Codeshare Flights:
Air New Zealand NZ9421
Operates only on 2026-02-05
Mon
-
-
Tue
-
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Wed
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Thu
Fri
-
-
Sat
-
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Sun
-
-
Codeshare flight, operated by United Airlines.
(UA 1665)
Duration: 2:18, non-stop Boeing 737-800 (738)
Direct Codeshare Flights:
Air New Zealand NZ9421
Effective 2026-05-23 through 2026-05-29
Mon
-
-
Tue
-
-
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines.
(UA 2013)
Duration: 2:14, non-stop Airbus A319 (319)
Direct Codeshare Flights:
Air New Zealand NZ9421
Operates only on 2026-06-01
Mon
Tue
-
-
Wed
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Thu
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Fri
-
-
Sat
-
-
Sun
-
-
Codeshare flight, operated by United Airlines.
(UA 2013)
Duration: 2:14, non-stop Airbus A319 (319)
Direct Codeshare Flights:
Air New Zealand NZ9421
Operates only on 2026-06-09
Mon
-
-
Tue
Wed
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Thu
-
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Fri
-
-
Sat
-
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Sun
-
-
Codeshare flight, operated by United Airlines.
(UA 2013)
Duration: 2:14, non-stop Airbus A319 (319)
Direct Codeshare Flights:
Air New Zealand NZ9421
Effective 2026-06-19 through 2026-06-21
Mon
-
-
Tue
-
-
Wed
-
-
Thu
-
-
Fri
Sat
-
-
Sun
Codeshare flight, operated by United Airlines.
(UA 2013)
Duration: 2:14, non-stop Airbus A319 (319)
Direct Codeshare Flights:
Air New Zealand NZ9421
Effective 2026-07-04 through 2026-07-08
Mon
-
-
Tue
Wed
Thu
-
-
Fri
-
-
Sat
Sun
Codeshare flight, operated by United Airlines.
(UA 2013)
Duration: 2:14, non-stop Airbus A319 (319)
Direct Codeshare Flights:
Air New Zealand NZ9421
Effective 2026-07-13 through 2026-07-16
Mon
Tue
-
-
Wed
-
-
Thu
Fri
-
-
Sat
-
-
Sun
-
-
Codeshare flight, operated by United Airlines.
(UA 2013)
Duration: 2:14, non-stop Airbus A319 (319)
Direct Codeshare Flights:
Air New Zealand NZ9421
Effective 2026-07-24 through 2026-07-27
Mon
Tue
-
-
Wed
-
-
Thu
-
-
Fri
Sat
Sun
Codeshare flight, operated by United Airlines.
(UA 2013)
Duration: 2:14, non-stop Airbus A319 (319)
Direct Codeshare Flights:
Air New Zealand NZ9421
Effective 2026-08-06 through 2026-08-09
Mon
-
-
Tue
-
-
Wed
-
-
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines.
(UA 2013)
Duration: 2:14, non-stop Airbus A319 (319)
Direct Codeshare Flights:
Air New Zealand NZ9421
Effective 2026-08-12 through 2026-08-17
Mon
Tue
-
-
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines.
(UA 2013)
Duration: 2:14, non-stop Boeing 737 MAX 8 (7M8)
Direct Codeshare Flights:
Air New Zealand NZ9421
Effective 2026-08-20 through 2026-08-27
Mon
-
-
Tue
Wed
Thu
Fri
-
-
Sat
Sun
-
-
Codeshare flight, operated by United Airlines.
(UA 2013)
Duration: 2:14, non-stop Boeing 737 MAX 8 (7M8)
Direct Codeshare Flights:
Air New Zealand NZ9421
Effective 2026-08-28 through 2026-09-03
Mon
Tue
Wed
-
-
Thu
Fri
Sat
Sun
-
-
Codeshare flight, operated by United Airlines.
(UA 2013)
Duration: 2:14, non-stop Boeing 737 MAX 8 (7M8)
Direct Codeshare Flights:
Air New Zealand NZ9421
Effective 2026-09-05 through 2026-09-11
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines.
(UA 2013)
Duration: 2:14, non-stop Boeing 737 MAX 8 (7M8)
Direct Codeshare Flights:
Air New Zealand NZ9421
Effective 2026-09-13 through 2026-09-19
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines.
(UA 2013)
Duration: 2:14, non-stop Boeing 737 MAX 8 (7M8)
Direct Codeshare Flights:
Air New Zealand NZ9421
Effective 2026-09-21 through 2026-10-18
Mon
Tue
Wed
Thu
Fri
Sat
Sun
Codeshare flight, operated by United Airlines.
(UA 2013)
Duration: 2:14, non-stop Boeing 737 MAX 8 (7M8)
Direct Codeshare Flights:
Air New Zealand NZ9421
Operates only on 2026-02-27
Mon
-
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Tue
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Wed
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Thu
-
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Fri
Sat
-
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Sun
-
-
Codeshare flight, operated by United Airlines.
(UA 737)
Duration: 2:17, non-stop Boeing 737 MAX 8 (7M8)
Direct Codeshare Flights:
Air New Zealand NZ9421
Effective 2026-03-05 through 2026-03-06
Mon
-
-
Tue
-
-
Wed
-
-
Thu
Fri
Sat
-
-
Sun
-
-
Codeshare flight, operated by United Airlines.
(UA 436)
Duration: 2:13, non-stop Boeing 737-800 (738)
Direct Codeshare Flights:
Air New Zealand NZ9421
Effective 2026-03-20 through 2026-03-22
Mon
-
-
Tue
-
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Wed
-
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Thu
-
-
Fri
Sat
-
-
Sun
Codeshare flight, operated by United Airlines.
(UA 436)
Duration: 2:13, non-stop Boeing 737-800 (738)
Direct Codeshare Flights:
Air New Zealand NZ9421
Operates only on 2026-03-25
Mon
-
-
Tue
-
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Wed
Thu
-
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Fri
-
-
Sat
-
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Sun
-
-
Codeshare flight, operated by United Airlines.
(UA 436)
Duration: 2:14, non-stop Airbus A320 (320)
Direct Codeshare Flights:
Air New Zealand NZ9421
Effective 2026-04-06 through 2026-04-09
Mon
Tue
Wed
-
-
Thu
Fri
-
-
Sat
-
-
Sun
-
-
Codeshare flight, operated by United Airlines.
(UA 1756)
Duration: 2:13, non-stop Boeing 737-800 (738)
Direct Codeshare Flights:
Air New Zealand NZ9421
Effective 2026-04-14 through 2026-04-17
Mon
-
-
Tue
Wed
-
-
Thu
-
-
Fri
Sat
-
-
Sun
-
-
Codeshare flight, operated by United Airlines.
(UA 1756)
Duration: 2:13, non-stop Boeing 737-800 (738)
Direct Codeshare Flights:
Air New Zealand NZ9421
Effective 2026-05-01 through 2026-05-03
Mon
-
-
Tue
-
-
Wed
-
-
Thu
-
-
Fri
Sat
Sun
Codeshare flight, operated by United Airlines.
(UA 1756)
Duration: 2:13, non-stop Boeing 737 MAX 8 (7M8)
Direct Codeshare Flights:
Air New Zealand NZ9421
Operates only on 2026-05-11
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 1756)
Duration: 2:13, non-stop Boeing 737 MAX 8 (7M8)
Ad mobi box here (300x250px) 8888825773 M FlightWNum Bottom Box
Parallax here SEA-SFO
- NZ 9421 is a domestic flight departing from the Seattle-Tacoma airport (SEA) and arriving at San Francisco airport (SFO).
- The flight distance is 679 miles, or 1092 km.
- The timezone of both the departure and the arrival airports is UTC-8 . Current time at both airports is (loading...).
- For direct flights, the flight time varies between 2:13 and 2:19.