WN4984 ChicagoMDW San FranciscoSFO
WN4984 by Southwest Airlines flies from Chicago (MDW) to San Francisco (SFO).
scheduled from MDW
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Early read, sample still buildingConditions at MDW and SFO 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. This route's tracked sample is still thin — treat these as an early read, not a precise forecast.
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 San Francisco flights today
same route · Southwest AirlinesIf WN4984 is cancelled, these are the other Southwest Airlines nonstop flights from Chicago to San Francisco 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 WN4984 actually runs
Pro Flight Search has tracked every published board update for WN4984 across the MDW and SFO boards: schedule changes, gate pushes and actual clocks. Combined risk score: 4.9/100. Based on airport operations, weather, and cached board history at MDW and SFO.
The verdict above is that record speaking, so it reflects how WN4984 operates rather than what the timetable promises. Numbers refresh as new flights operate.
Planning around WN4984? 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 — WN4984 Chicago to San Francisco on-time performance, measured from the MDW and SFO airport boards.
https://proflightsearch.com/flight/WN4984
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