AS377 AtlantaATL · 07:00 SeattleSEA · 09:26
AS377 by Alaska Airlines flies from Atlanta (ATL) to Seattle (SEA) for the Wed, Aug 19 departure.
en route from ATL to SEA
board checked 20m ago · checking again in 45s
Board estimate · gate and arrival times. Off blocks 07:24 · typical taxi-out at ATL ≈ 9 min. No receiver coverage over open ocean.
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 −43 min · 0 cancelled · 8 operations tracked
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at ATL 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 Atlanta to Seattle flights today
same route · Alaska AirlinesIf AS377 is cancelled, these are the other Alaska Airlines nonstop flights from Atlanta to Seattle on the same day, with scheduled departure times in ATL local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How AS377 actually runs
Pro Flight Search has tracked every published board update for AS377 across the ATL and SEA boards: schedule changes, gate pushes and actual clocks. Usually lands ~40 min early. Based on 2 confirmed landings · 2/2 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 AS377 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: N469AS, N467AS, N296AK, N236AK.
Board clocks recorded as ATL and SEA published them.
Planning around AS377? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — AS377 Atlanta to Seattle on-time performance, measured from the ATL and SEA airport boards.
https://proflightsearch.com/flight/AS377
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