AS821 SeattleSEA · 07:20 HonoluluHNL · 10:47
AS821 by Alaska Airlines flies from Seattle (SEA) to Honolulu (HNL).
scheduled from SEA
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 −34 min · 0 cancelled · 8 operations tracked
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at SEA and HNL 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 Honolulu flights today
same route · Alaska AirlinesIf AS821 is cancelled, these are the other Alaska Airlines nonstop flights from Seattle to Honolulu 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 AS821 actually runs
Pro Flight Search has tracked every published board update for AS821 across the SEA and HNL boards: schedule changes, gate pushes and actual clocks. Early read — pattern not clear yet. Only 1 completed leg so far: left a little late (~12 min) but landed about 18 min early. Not enough to call it.
The verdict above is that record speaking, so it reflects how AS821 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: N378HA, N370HA, N392HA, N383HA.
Board clocks recorded as SEA and HNL published them.
Planning around AS821? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — AS821 Seattle to Honolulu on-time performance, measured from the SEA and HNL airport boards.
https://proflightsearch.com/flight/AS821
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