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 3657
SCHEDULED · TYPICAL SCHEDULE
Friday, October 2 Yesterday
WN 3657 · SJC → BNA
departs 8:50 AM PT · arrives 3:05 PM CT
Forecast issued Fri 10:00 PM ET · 10h after departure
Watch this flight
Other days
Fri 10/2
Sun 10/4 25%
Mon 10/5 12%
Fri 10/9 12%
Odds over time
Arrive at BNA more than 15 minutes late?
22%
chance · ±0 pts
+3 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
22%
Leave 15+ late
13%
Arrive 1h+ late
5%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
3.6d
2d
1d
12h
6h
Departs
Lands
Arrive at BNA more than 15 minutes late?
Calm-weather odds: 23% · changed +3 pts in 24h
+3 pts
22%
Yes 22%
No 78%
Leave SJC more than 15 minutes late?
Calm-weather odds: 13% · changed +3 pts in 24h
+3 pts
13%
Yes 13%
No 87%
Arrive at BNA more than an hour late?
Calm-weather odds: 5% · changed +0 pts in 24h
+0 pts
5%
Yes 5%
No 95%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to BNA?
On time or early
77%
15–30 min late
11%
30 min–1 hour late
6%
1–2 hours late
2%
Over 2 hours late
3%
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
↑
Arrivals into BNA at that hour are often late
↑
Other factors
↓
BNA usually runs smoothly
↓
8am departures from SJC are usually not late
Weather at each end
SJC (origin)
Gusts 5 kt Ceiling 700 ft Visibility 4 mi Precip none
BNA (destination)
Gusts 22 kt Ceiling 800 ft Visibility 2 mi Precip 1.06 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.