AS390 San DiegoSAN · 08:25 BostonBOS · 17:12
AS390 by Alaska Airlines flies from San Diego (SAN) to Boston (BOS) for the Mon, Sep 14 departure.
departs SAN · 65 min late
board checked 1m ago · checking again in 45s
Aircraft is still on the ground at SAN · 74 min after scheduled departure
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at SAN and BOS 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 Diego to Boston flights today
same route · Alaska AirlinesIf AS390 is cancelled, this is the other Alaska Airlines nonstop flight from San Diego to Boston on the same day, with scheduled departure times in SAN local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How AS390 actually runs
Pro Flight Search has tracked every published board update for AS390 across the SAN and BOS boards: schedule changes, gate pushes and actual clocks. Early read — pattern not clear yet. Only 1 completed leg so far: landed +135 min. Not enough to call it.
The verdict above is that record speaking, so it reflects how AS390 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 SAN and BOS published them.
Planning around AS390? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — AS390 San Diego to Boston on-time performance, measured from the SAN and BOS airport boards.
https://proflightsearch.com/flight/AS390
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