Schedule: a typical Friday (the flights of Jul 31, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.

SOUTHWEST · FLIGHT WN 4535 SCHEDULED · TYPICAL SCHEDULE

Friday, October 2

WN 4535 · GSP → BNA

departs 12:55 PM ET · arrives 1:10 PM CT

Forecast issued Wed 9:00 PM ET · 40h before departure

Arrive at BNA more than 15 minutes late?

13% chance · ±1 pts −3 pts · 24h

HOW SURE WE ARE Moderate. The odds now blend history with early weather forecasts.

How late will it get to BNA?

On time or early
86%
15–30 min late
3%
30 min–1 hour late
5%
1–2 hours late
3%
Over 2 hours late
1%
Cancelled
<1%

Gate arrival compared with the scheduled arrival. The ranges add up to 100%.

What’s moving the odds

↑ Cloud base down to 500 ft, 0.3 in of rain forecast at BNA that day

↑ This flight has been late 33% of the time recently

↑ WN's recent on-time record

↓ BNA usually runs smoothly

↓ Mostly benign weather forecast at GSP

Weather at each end

GSP (origin) Gusts13 kt Ceilingnone (clear) Visibility10+ mi Precipnone

BNA (destination) Gusts14 kt Ceiling500 ft Visibility3 mi Precip0.39 in

How this resolves

Yes if the gate arrival is more than 15 minutes after the scheduled arrival. Cancelled or diverted flights resolve N/A.

Every question here is display only — there is no betting or money involved. Gate times come from the airline; a cancellation resolves only the “Cancelled?” question, and a diversion voids the delay questions.

WN 4535 · GSP → BNA

Odds over time

How late will it get to BNA?