Alaska Airlines
AS421Seattle to Fairbanks
Alaska Airlines flight AS421 flies from Seattle Tacoma (SEA) to Fairbanks (FAI), 2,462 km. Over October 2025 to May 2026 it usually arrives about 3 minutes late: 82% of 22 flights arrived within 15 minutes of schedule and 0% were cancelled (US Department of Transportation data).
On-time record, last 12 months
82%
on time (within 15 min)
9%
more than 30 min late
0%
cancelled
+3 min
average arrival vs schedule
Every operation of AS421, October 2025 to May 2026: 22 flights. Source: US Bureau of Transportation Statistics, public domain.
Routes flown as AS421
- Seattle Tacoma (SEA) to Fairbanks (FAI)21 flights
- Seattle Tacoma (SEA) to Boston (BOS)1 flights
Other flights from Seattle to Fairbanks
More about Seattle Tacoma (SEA) and Fairbanks (FAI).
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