WN3721 San AntonioSAT Las VegasLAS · 21:25
WN3721 by Southwest Airlines flies from San Antonio (SAT) to Las Vegas (LAS) for the Fri, Oct 9 departure.
arrival expected at LAS · 40 min late
board checked 29m ago · checking again in 45s
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at SAT 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 →
When it flies
scheduled departuresEach mark is a scheduled departure at its origin-local time. Today is highlighted.
Other San Antonio to Las Vegas flights today
same route · Southwest AirlinesIf WN3721 is cancelled, these are the other Southwest Airlines nonstop flights from San Antonio to Las Vegas on the same day, with scheduled departure times in SAT local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How WN3721 actually runs
Pro Flight Search has tracked every published board update for WN3721 across the SAT and LAS boards: schedule changes, gate pushes and actual clocks. Combined risk score: 33.0/100. Based on airport operations, weather, and cached board history at SAT and LAS.
The verdict above is that record speaking, so it reflects how WN3721 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 SAT and LAS published them.
Planning around WN3721? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — WN3721 San Antonio to Las Vegas on-time performance, measured from the SAT and LAS airport boards.
https://proflightsearch.com/flight/WN3721
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