About 1 in 3 AS 591 flights from San Francisco arrived 15+ minutes late, diverted or cancelled over the past year (33%); 0.4% were cancelled. The typical flight landed 2 minutes late.
AS 591: SFO → SEA
Scheduled to leave San Francisco at 8:28 p.m. local time. Over the past year it arrived on time 67% of the time (246 flights), worse than other AS flights on the route at that hour (72%). Last seen in the data Aug 31, 2026.
Month by month
By day of week
| Day | Flights | On time |
|---|---|---|
| Monday | 39 | 54% |
| Tuesday | 35 | 83% |
| Wednesday | 35 | 71% |
| Thursday | 36 | 67% |
| Friday | 33 | 48% |
| Saturday | 31 | 81% |
| Sunday | 37 | 70% |
Why it was late
All flights SFO → SEA · Connecting off AS 591? Check the risk
Questions
How often is AS 591 from SFO to SEA late?
Alaska Airlines 591 from San Francisco, CA to Seattle, WA arrived 15 or more minutes late, was diverted or was cancelled on 33% of 246 scheduled flights between September 2025 and August 2026. 0.4% were cancelled.
Flight numbers change. Figures cover flights with this airline, number and route only. "Likely range" is the 95% interval for the true on-time rate given the number of flights. This is history, not live status: check Alaska Airlines for today's flight. Method.