AS1311 San JoseSJC · 10:22 SeattleSEA · 12:40
AS1311 by Alaska Airlines flies from San Jose (SJC) to Seattle (SEA) for the Mon, Sep 21 departure.
departs SJC · 36 min late
Where the minutes go
last 5 operations · gate push → arrivalThe bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.
The last 30 days
arrival outcome per operation0 cancelled · 5 operations tracked
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at SJC and SEA are near their clear-air norm right now, so this reflects the route's recent baseline rather than a weather penalty. For this route and airline, under conditions like today's, over the last 90 days.
Pro Flight Search tracking, 90 days · the weather × delay correlation study → · live weather risk by airport →
When it flies
scheduled departuresEach mark is a scheduled departure at its origin-local time. Today is highlighted.
Other San Jose to Seattle flights today
same route · Alaska AirlinesIf AS1311 is cancelled, these are the other Alaska Airlines nonstop flights from San Jose to Seattle on the same day, with scheduled departure times in SJC local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How AS1311 actually runs
Pro Flight Search has tracked every published board update for AS1311 across the SJC and SEA boards: schedule changes, gate pushes and actual clocks. Usually departs ~10 min late. Based on 5 confirmed departures · 4/5 within 15 min of schedule.
The verdict above is that record speaking, so it reflects how AS1311 operates rather than what the timetable promises. Numbers refresh as new flights operate.
How this operation is measured
Board log
scheduled → actual, per operationAircraft
Recent tails: N552AS, N553AS, N408AS, N520AS.
Board clocks recorded as SJC and SEA published them.
Planning around AS1311? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.
Pro Flight Search — AS1311 San Jose to Seattle on-time performance, measured from the SJC and SEA airport boards.
https://proflightsearch.com/flight/AS1311
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