AS663 SeattleSEA · 14:42 Salt Lake CitySLC · 17:46
AS663 by Alaska Airlines flies from Seattle (SEA) to Salt Lake City (SLC) for the Sun, Oct 11 departure.
departs SEA · on schedule
board checked 52m ago · checking again in 45s
Where the minutes go
last 4 operations · gate push → arrivalThe bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.
The route today
live boardsWeather lens
Weather-conditioned outlook for this flight right now
Measured, 90-day sampleDriven mainly by SLC (Salt Lake City), 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 Seattle to Salt Lake City flights today
same route · Alaska AirlinesIf AS663 is cancelled, these are the other Alaska Airlines nonstop flights from Seattle to Salt Lake City 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 AS663 actually runs
Pro Flight Search has tracked every published board update for AS663 across the SEA and SLC boards: schedule changes, gate pushes and actual clocks. Usually lands ~259 min late. Based on 4 confirmed landings · 2/4 within 15 min of schedule.
The verdict above is that record speaking, so it reflects how AS663 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: N553AS, N609AS, N612AS.
Board clocks recorded as SEA and SLC published them.
Planning around AS663? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — AS663 Seattle to Salt Lake City on-time performance, measured from the SEA and SLC airport boards.
https://proflightsearch.com/flight/AS663
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