WN4172 Las VegasLAS · 13:10 LouisvilleSDF · 20:00
WN4172 by Southwest Airlines flies from Las Vegas (LAS) to Louisville (SDF) for the Sat, Sep 19 departure.
departs LAS · on schedule
board checked 14m ago · checking again in 45s
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at LAS and SDF 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 Las Vegas to Louisville flights today
same route · Southwest AirlinesIf WN4172 is cancelled, these are the other Southwest Airlines nonstop flights from Las Vegas to Louisville on the same day, with scheduled departure times in LAS local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How WN4172 actually runs
Pro Flight Search has tracked every published board update for WN4172 across the LAS and SDF boards: schedule changes, gate pushes and actual clocks. Early read — pattern not clear yet. Only 2 completed legs so far: left right on schedule but landed about 26 min early. Not enough to call it.
The verdict above is that record speaking, so it reflects how WN4172 operates rather than what the timetable promises. Numbers refresh as new flights operate.
How this operation is measured
Board log
scheduled → actual, per operationAircraft
Recent tails: N7878A, N236WN.
Board clocks recorded as LAS and SDF published them.
Planning around WN4172? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — WN4172 Las Vegas to Louisville on-time performance, measured from the LAS and SDF airport boards.
https://proflightsearch.com/flight/WN4172
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