Schedule: a typical summer Friday (the flights of Jul 31, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SOUTHWEST · FLIGHT WN 4791
SCHEDULED · TYPICAL SCHEDULE
Friday, October 2 Today
WN 4791 · BNA → SLC
departs 4:20 PM CT · arrives 6:55 PM MT
Forecast issued Fri 12:00 PM ET · 5h before departure
Watch this flight
Other days
Today
Sat 10/3 17%
Sun 10/4 25%
Mon 10/5 24%
Wed 10/7 21%
Odds over time
Arrive at SLC more than 15 minutes late?
51%
chance · ±0 pts
+16 pts · 24h
HOW SURE WE ARE
High. The odds now come mostly from live FAA and airport data.
Arrive 15+ late
51%
Leave 15+ late
48%
Arrive 1h+ late
16%
Cancelled
4%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
20%
40%
60%
80%
3.8d
2d
1d
12h
Now
Departs
Lands
Arrive at SLC more than 15 minutes late?
Calm-weather odds: 20% · changed +16 pts in 24h
+16 pts
51%
Yes 51%
No 49%
Leave BNA more than 15 minutes late?
Calm-weather odds: 30% · changed +13 pts in 24h
+13 pts
48%
Yes 48%
No 52%
Arrive at SLC more than an hour late?
Calm-weather odds: 5% · changed +10 pts in 24h
+10 pts
16%
Yes 16%
No 84%
Cancelled?
Calm-weather odds: <1% · changed +4 pts in 24h
+4 pts
4%
Yes 4%
No 96%
How late will it get to SLC?
On time or early
46%
15–30 min late
25%
30 min–1 hour late
9%
1–2 hours late
13%
Over 2 hours late
2%
Cancelled
4%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Visibility down to 1 mi, 0.7 in of rain forecast at BNA that day
↑
This flight has been late 41% of the time recently
↑
4pm departures from BNA are often late
↓
BNA usually runs smoothly
↓
Mostly benign weather forecast at SLC
Weather at each end
BNA (origin)
Gusts 12 kt Ceiling 1,633 ft Visibility 2 mi Precip 0.61 in
SLC (destination)
Gusts 12 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.