AS428 SeattleSEA Long BeachLGB
AS428 by Alaska Airlines flies from Seattle (SEA) to Long Beach (LGB).
scheduled from SEA
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at SEA and LGB 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 Seattle to Long Beach flights today
same route · Alaska AirlinesIf AS428 is cancelled, these are the other Alaska Airlines nonstop flights from Seattle to Long Beach on the same day, with scheduled departure times in SEA local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How AS428 actually runs
Pro Flight Search has tracked every published board update for AS428 across the SEA and LGB boards: schedule changes, gate pushes and actual clocks. Combined risk score: 38.7/100. Based on airport operations, weather, and cached board history at SEA and LGB.
The verdict above is that record speaking, so it reflects how AS428 operates rather than what the timetable promises. Numbers refresh as new flights operate.
Planning around AS428? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — AS428 Seattle to Long Beach on-time performance, measured from the SEA and LGB airport boards.
https://proflightsearch.com/flight/AS428
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