AS1503 San DiegoSAN · 11:10 SeattleSEA · 14:17
AS1503 by Alaska Airlines flies from San Diego (SAN) to Seattle (SEA).
scheduled from SAN
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at SAN 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 Diego to Seattle flights today
same route · Alaska AirlinesIf AS1503 is cancelled, these are the other Alaska Airlines nonstop flights from San Diego to Seattle 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 AS1503 actually runs
Pro Flight Search has tracked every published board update for AS1503 across the SAN and SEA boards: schedule changes, gate pushes and actual clocks. Early read — pattern not clear yet. Only 2 completed legs so far: departed +200 min. Not enough to call it.
The verdict above is that record speaking, so it reflects how AS1503 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 SEA published them.
Planning around AS1503? 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 — AS1503 San Diego to Seattle on-time performance, measured from the SAN and SEA airport boards.
https://proflightsearch.com/flight/AS1503
.