WN3721 TucsonTUS · 07:00 DenverDEN · 09:50
WN3721 by Southwest Airlines flies from Tucson (TUS) to Denver (DEN).
scheduled from TUS
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at TUS and DEN 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 Tucson to Denver flights today
same route · Southwest AirlinesIf WN3721 is cancelled, these are the other Southwest Airlines nonstop flights from Tucson to Denver on the same day, with scheduled departure times in TUS 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 TUS and DEN boards: schedule changes, gate pushes and actual clocks. Early read — pattern not clear yet. Only 1 completed leg so far: left a little late (~19 min) but landed about 5 min early. Not enough to call it.
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 operationAircraft
Recent tails: N8864H.
Board clocks recorded as TUS and DEN 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 Tucson to Denver on-time performance, measured from the TUS and DEN airport boards.
https://proflightsearch.com/flight/WN3721
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