Schedule: a typical Wednesday (the flights of Jul 29, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
SOUTHWEST · FLIGHT WN 4535
SCHEDULED · TYPICAL SCHEDULE
Wednesday, September 30 Today
WN 4535 · GSP → BNA
departs 12:50 PM ET · arrives 1:05 PM CT
Forecast issued Wed 7:00 PM ET · 6h after departure
Watch this flight
Other days
Today
Thu 10/1 13%
Fri 10/2 15%
Sat 10/3 11%
Sun 10/4 21%
Mon 10/5 15%
Tue 10/6 11%
Odds over time
Arrive at BNA more than 15 minutes late?
8%
chance · ±0 pts
−1 pt · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
8%
Leave 15+ late
10%
Arrive 1h+ late
3%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
5%
10%
15%
20%
2.8d
2d
1d
12h
6h
Departs
Lands
Arrive at BNA more than 15 minutes late?
Calm-weather odds: 8% · changed −1 pt in 24h
−1 pt
8%
Yes 8%
No 92%
Leave GSP more than 15 minutes late?
Calm-weather odds: 10% · changed +0 pts in 24h
+0 pts
10%
Yes 10%
No 90%
Arrive at BNA more than an hour late?
Calm-weather odds: 3% · changed +0 pts in 24h
+0 pts
3%
Yes 3%
No 97%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 100%
How late will it get to BNA?
On time or early
92%
15–30 min late
3%
30 min–1 hour late
2%
1–2 hours late
2%
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
↑
BNA is busy at that time
↑
This flight has been late 34% of the time recently
↓
Wednesdays in September are usually quieter than average
↓
Mostly benign weather forecast at GSP
Weather at each end
GSP (origin)
Gusts 7 kt Ceiling none (clear) Visibility 10+ mi Precip none
BNA (destination)
Gusts 15 kt Ceiling none (clear) Visibility 10+ mi Precip none
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.