WN431 ChicagoMDW PortlandPWM
WN431 by Southwest Airlines flies from Chicago (MDW) to Portland (PWM).
scheduled from MDW
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at MDW and PWM 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 Chicago to Portland flights today
same route · Southwest AirlinesIf WN431 is cancelled, these are the other Southwest Airlines nonstop flights from Chicago to Portland 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 WN431 actually runs
Pro Flight Search has tracked every published board update for WN431 across the MDW and PWM boards: schedule changes, gate pushes and actual clocks. Combined risk score: 50.0/100. Based on airport operations, weather, and cached board history at MDW and PWM.
The verdict above is that record speaking, so it reflects how WN431 operates rather than what the timetable promises. Numbers refresh as new flights operate.
Planning around WN431? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — WN431 Chicago to Portland on-time performance, measured from the MDW and PWM airport boards.
https://proflightsearch.com/flight/WN431
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