WN3966 NashvilleBNA · 17:40 BirminghamBHM · 18:40
WN3966 by Southwest Airlines flies from Nashville (BNA) to Birmingham (BHM) for the Sun, Sep 6 departure.
departs BNA · on schedule
board checked 299m ago · checking again in 45s
⚖ WN3966 typically leaves +11 and lands −15. The air wins minutes back.Where the minutes go
last 7 operations · gate push → arrivalThe bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.
The last 30 days
arrival outcome per operationmedian arrival −15 min · 0 cancelled · 11 operations tracked
The route today
live boardsWeather lens
Delay & cancellation outlook for this flight
Measured, 90-day sampleConditions at BNA and BHM 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 Nashville to Birmingham flights today
same route · Southwest AirlinesIf WN3966 is cancelled, these are the other Southwest Airlines nonstop flights from Nashville to Birmingham on the same day, with scheduled departure times in BNA local time. Most flights posting a delay still operate — rebooking usually only beats a very large posted delay. Every airline on this route →
How WN3966 actually runs
Pro Flight Search has tracked every published board update for WN3966 across the BNA and BHM boards: schedule changes, gate pushes and actual clocks. Usually lands ~15 min early. Based on 11 confirmed landings · 11/11 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 WN3966 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: N276WN, N491WN, N7835A, N7715E.
Board clocks recorded as BNA and BHM published them.
Planning around WN3966? Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
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Pro Flight Search — WN3966 Nashville to Birmingham on-time performance, measured from the BNA and BHM airport boards.
https://proflightsearch.com/flight/WN3966
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