Historical on-time performance
Seattle to Fairbanks
1,533 miData through Dec 2025Source: US DOT · BTS
Flights on SEA–FAI arrive on time 74% of the time over the last 12 months.
On-time rate74%arrived within 15 min
p90 delay35 min1 in 10 flights is worse (tail risk)
Cancelled0.8%of scheduled flights
based on 2,353 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Delta Air LinesbestOn-time80%Medianon timep9030 minCancel1.3%Flights457
- Alaska AirlinesOn-time73%Medianon timep9035 minCancel0.7%Flights1,896
Why flights run late
Delay causes
- Airline41%
- Weather0%
- Air traffic (NAS)23%
- Late aircraft35%
- Security0%
Most delay minutes here are attributed to Airline.
Over time
On-time trend
By season
On-time rate by month
When to fly
Best time to fly SEA → FAI
All airlines · rolling 36 months (2023-01 .. 2025-12).
Best time of day
Afternoons are the most reliable time of day to fly this route — 89% on time.
- Afternoons89% on time · p90 15 min · 72 flights · limited
- Mornings78% on time · p90 25 min · 1,112 flights
- Overnights77% on time · p90 30 min · 3,045 flights
- Middays73% on time · p90 35 min · 1,508 flights
- Evenings73% on time · p90 35 min · 1,149 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 70% to 81% on time.
- Saturdays81% on time · p90 25 min · 986 flights
- Wednesdays80% on time · p90 30 min · 981 flights
- Tuesdays78% on time · p90 30 min · 972 flights
- Mondays76% on time · p90 30 min · 988 flights
- Sundays73% on time · p90 35 min · 994 flights
- Thursdays72% on time · p90 35 min · 974 flights
- Fridays70% on time · p90 35 min · 991 flights
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