WN4378 ChicagoMDW · 18:55 CharlotteCLT · 21:55
WN4378 by Southwest Airlines flies from Chicago (MDW) to Charlotte (CLT) for the Mon, Sep 14 departure.
departs MDW · on schedule
board checked 11m ago · checking again in 45s
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 MDW and CLT 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 Charlotte flights today
same route · Southwest AirlinesIf WN4378 is cancelled, these are the other Southwest Airlines nonstop flights from Chicago to Charlotte 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 WN4378 actually runs
Pro Flight Search has tracked every published board update for WN4378 across the MDW and CLT boards: schedule changes, gate pushes and actual clocks. Usually lands ~36 min late. Based on 4 confirmed landings · 2/4 within 15 min of schedule. Pushes back late but makes up time in the air.
The verdict above is that record speaking, so it reflects how WN4378 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 CLT published them.
Planning around WN4378? 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 — WN4378 Chicago to Charlotte on-time performance, measured from the MDW and CLT airport boards.
https://proflightsearch.com/flight/WN4378
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