AS256 BostonBOS · 08:28 San DiegoSAN · 11:43
AS256 by Alaska Airlines flies from Boston (BOS) to San Diego (SAN) for the Mon, Aug 17 departure.
arrived at SAN · 27 min early
⚖ AS256 typically leaves +27 and lands −8. The air wins minutes back.Where the minutes go
last 7 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 operationmedian arrival −8 min · 1 cancelled · 15 operations tracked
The route today
live boardsWeather lens
Weather-conditioned outlook for this flight right now
Measured, 90-day sampleDriven mainly by BOS (Boston), currently flying MVFR (marginal visual). 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 Boston to San Diego flights today
same route · Alaska AirlinesIf AS256 is cancelled, this is the other Alaska Airlines nonstop flight from Boston to San Diego on the same day, with scheduled departure times in BOS local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How AS256 actually runs
Pro Flight Search has tracked every published board update for AS256 across the BOS and SAN boards: schedule changes, gate pushes and actual clocks. Usually lands ~8 min early. Based on 10 confirmed landings · 9/10 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 AS256 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: N523AS, N548AS, N557AS, N814AK.
Board clocks recorded as BOS and SAN published them.
Planning around AS256? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — AS256 Boston to San Diego on-time performance, measured from the BOS and SAN airport boards.
https://proflightsearch.com/flight/AS256
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