WN4578 AustinAUS · 22:40 Las VegasLAS · 23:35
WN4578 by Southwest Airlines flies from Austin (AUS) to Las Vegas (LAS) for the Thu, Oct 29 departure.
arrival expected at LAS · on schedule
board checked 9m ago · checking again in 45s
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at AUS and LAS 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 →
Tomorrow on this route
ForecastAustin to Las Vegas with Southwest Airlines · Thu 29 Oct, local date
- Chance a departure leaves 60+ min late
- 26%1.3× usual
Forecast weather: 30% chance of fog at Austin
No cancellation outlook here: this airport's board does not publish cancellations reliably.
Forecast: WeatherTomorrow · incl. data from ECMWF (CC BY 4.0, modified) · About 9 departures a day on this route with this airline. · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.
When it flies
scheduled departuresEach mark is a scheduled departure at its origin-local time. Today is highlighted.
Other Austin to Las Vegas flights today
same route · Southwest AirlinesIf WN4578 is cancelled, these are the other Southwest Airlines nonstop flights from Austin to Las Vegas on the same day, with scheduled departure times in AUS local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How WN4578 actually runs
Pro Flight Search has tracked every published board update for WN4578 across the AUS and LAS boards: schedule changes, gate pushes and actual clocks. Early read — pattern not clear yet. Only 2 completed legs so far: departed +100 min. Not enough to call it.
The verdict above is that record speaking, so it reflects how WN4578 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: N8531Q, N8895Q.
Board clocks recorded as AUS and LAS published them.
Planning around WN4578? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — WN4578 Austin to Las Vegas on-time performance, measured from the AUS and LAS airport boards.
https://proflightsearch.com/flight/WN4578
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