AS340 SeattleSEA · 08:40 Dallas-Fort WorthDFW · 14:53
AS340 by Alaska Airlines flies from Seattle (SEA) to Dallas-Fort Worth (DFW).
scheduled from SEA
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
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at SEA and DFW 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 Dallas-Fort Worth flights today
same route · Alaska AirlinesIf AS340 is cancelled, these are the other Alaska Airlines nonstop flights from Seattle to Dallas-Fort Worth 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 AS340 actually runs
Pro Flight Search has tracked every published board update for AS340 across the SEA and DFW boards: schedule changes, gate pushes and actual clocks. Usually lands ~7 min early. Based on 4 confirmed landings · 4/4 within 15 min of schedule.
The verdict above is that record speaking, so it reflects how AS340 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: N266AK, N483AS, N720AL.
Board clocks recorded as SEA and DFW published them.
Planning around AS340? 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 — AS340 Seattle to Dallas-Fort Worth on-time performance, measured from the SEA and DFW airport boards.
https://proflightsearch.com/flight/AS340
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