Historical on-time performance
Seattle to Anchorage
1,448 miData through May 2026Source: US DOT · BTS
Flights on SEA–ANC arrive on time 73% of the time over the last 12 months.
On-time rate73%arrived within 15 min
p90 delay40 min1 in 10 flights is worse (tail risk)
Cancelled1.0%of scheduled flights
based on 6,706 flights over the last 12 months. On-time means arriving within 15 minutes (BTS standard).
By airline
How each carrier compares
- Delta Air LinesbestOn-time78%Medianon timep9035 minCancel0.6%Flights1,643
- Alaska AirlinesOn-time72%Medianon timep9040 minCancel1.1%Flights4,913
- Hawaiian AirlinesOn-time54%Median10 minp9070 minCancel1.3%Flights150
Why flights run late
Delay causes
- Airline50%
- Weather2%
- Air traffic (NAS)22%
- Late aircraft26%
- Security0%
Most delay minutes here are attributed to Airline.
When flights don't go
Why flights were cancelled
- Airline76%
- Weather16%
- Air traffic (NAS)7%
- Security0%
Most cancellations here are attributed to Airline. Shares are among 68 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 → ANC
All airlines · rolling 36 months (2023-06 .. 2026-05).
Best time of day
Mornings are the most reliable time of day to fly this route — 82% on time.
- Mornings82% on time · p90 25 min · 4,419 flights
- Afternoons77% on time · p90 35 min · 2,469 flights
- Middays74% on time · p90 35 min · 5,916 flights
- Evenings74% on time · p90 35 min · 3,865 flights
- Overnights71% on time · p90 40 min · 4,982 flights
Best day of week
On-time rates are fairly even by day on this route — ranging from 73% to 78% on time.
- Wednesdays78% on time · p90 30 min · 2,979 flights
- Tuesdays77% on time · p90 30 min · 3,048 flights
- Saturdays77% on time · p90 30 min · 2,852 flights
- Sundays75% on time · p90 35 min · 3,293 flights
- Thursdays74% on time · p90 35 min · 3,177 flights
- Mondays73% on time · p90 35 min · 3,202 flights
- Fridays73% on time · p90 35 min · 3,174 flights
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