AS39 New YorkJFK · 18:59 San FranciscoSFO · 22:34
AS39 by Alaska Airlines flies from New York (JFK) to San Francisco (SFO) for the Sat, Oct 10 departure.
departs JFK · on schedule
board checked 27m ago · checking again in 45s
Where the minutes go
last 4 operations · gate push → arrivalThe bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at JFK and SFO 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 New York to San Francisco flights today
same route · Alaska AirlinesIf AS39 is cancelled, these are the other Alaska Airlines nonstop flights from New York to San Francisco on the same day, with scheduled departure times in JFK local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How AS39 actually runs
Pro Flight Search has tracked every published board update for AS39 across the JFK and SFO boards: schedule changes, gate pushes and actual clocks. Usually lands ~19 min early. Based on 3 confirmed landings · 3/3 within 15 min of schedule. Pushes back late but makes up time in the air.
The verdict above is that record speaking, so it reflects how AS39 operates rather than what the timetable promises. Numbers refresh as new flights operate.
How this operation is measured
Board log
scheduled → actual, per operationBoard clocks recorded as JFK and SFO published them.
Planning around AS39? 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 — AS39 New York to San Francisco on-time performance, measured from the JFK and SFO airport boards.
https://proflightsearch.com/flight/AS39
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