Historical on-time performance
Seattle to Fairbanks
Flights on SEA–FAI arrive on time 75% of the time over the last 12 months.
based on 2,316 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
Too close to call — no single carrier is clearly more on-time here.
- Delta Air LinesOn-time78%Medianon timep9030 minCancel2.2%Flights457
- Alaska AirlinesOn-time74%Medianon timep9035 minCancel0.8%Flights1,859
Why flights run late
Delay causes
- Airline44%
- Weather3%
- Air traffic (NAS)20%
- Late aircraft33%
- Security0%
Most delay minutes here are attributed to Airline.
When flights don't go
Why flights were cancelled
- Airline54%
- Weather46%
- Air traffic (NAS)0%
- Security0%
Most cancellations here are attributed to Airline. Shares are among 24 cancellations with a reported cause (BTS reports causes from June 2003).
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 (2023-06 .. 2026-05).
Best time of day
Afternoons are the most reliable time of day to fly this route — 88% on time.
- Afternoons88% on time · p90 15 min · 108 flights · limited
- Mornings78% on time · p90 25 min · 1,215 flights
- Overnights78% on time · p90 30 min · 3,002 flights
- Middays74% on time · p90 35 min · 1,541 flights
- Evenings71% on time · p90 40 min · 1,113 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 · 1,007 flights
- Tuesdays79% on time · p90 25 min · 978 flights
- Wednesdays78% on time · p90 30 min · 988 flights
- Mondays77% on time · p90 30 min · 995 flights
- Thursdays74% on time · p90 30 min · 994 flights
- Sundays73% on time · p90 35 min · 1,007 flights
- Fridays70% on time · p90 35 min · 1,010 flights
Keep exploring