WN3981 St LouisSTL SeattleSEA
WN3981 by Southwest Airlines flies from St Louis (STL) to Seattle (SEA).
scheduled from STL
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at STL 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 St Louis to Seattle flights today
same route · Southwest AirlinesIf WN3981 is cancelled, these are the other Southwest Airlines nonstop flights from St Louis to Seattle on the same day, with scheduled departure times in STL local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How WN3981 actually runs
Pro Flight Search has tracked every published board update for WN3981 across the STL and SEA boards: schedule changes, gate pushes and actual clocks. Combined risk score: 50.0/100. Based on airport operations, weather, and cached board history at STL and SEA.
The verdict above is that record speaking, so it reflects how WN3981 operates rather than what the timetable promises. Numbers refresh as new flights operate.
Planning around WN3981? 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 — WN3981 St Louis to Seattle on-time performance, measured from the STL and SEA airport boards.
https://proflightsearch.com/flight/WN3981
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