WN4366 ChicagoMDW · 22:20 SeattleSEA · 00:55
WN4366 by Southwest Airlines flies from Chicago (MDW) to Seattle (SEA).
scheduled from MDW
The route today
live boardsWeather lens
Weather-conditioned outlook for this flight right now
Measured, 90-day sampleDriven mainly by MDW (Chicago), 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 Chicago to Seattle flights today
same route · Southwest AirlinesIf WN4366 is cancelled, these are the other Southwest Airlines nonstop flights from Chicago to Seattle on the same day, with scheduled departure times in MDW local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How WN4366 actually runs
Pro Flight Search has tracked every published board update for WN4366 across the MDW and SEA boards: schedule changes, gate pushes and actual clocks. Early read — pattern not clear yet. Only 2 completed legs so far: departed +37 min. Not enough to call it.
The verdict above is that record speaking, so it reflects how WN4366 operates rather than what the timetable promises. Numbers refresh as new flights operate.
How this operation is measured
Board log
scheduled → actual, per operationBoard clocks recorded as MDW and SEA published them.
Planning around WN4366? 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 — WN4366 Chicago to Seattle on-time performance, measured from the MDW and SEA airport boards.
https://proflightsearch.com/flight/WN4366
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