Schedule: a typical summer Tuesday (the flights of Jul 28, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SOUTHWEST · FLIGHT WN 3478
SCHEDULED · TYPICAL SCHEDULE
Tuesday, September 29
WN 3478 · SAN → BNA
departs 6:35 AM PT · arrives 12:45 PM CT
Forecast issued Tue 10:00 PM ET · 12h after departure
Watch this flight
Other days
Tue 9/29
Today 11%
Mon 10/5 8%
Fri 10/9 10%
Odds over time
Arrive at BNA more than 15 minutes late?
6%
chance · ±0 pts
+1 pt · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
6%
Leave 15+ late
6%
Arrive 1h+ late
1%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
3%
6%
9%
12%
2.8d
2d
1d
12h
6h
Departs
Lands
Arrive at BNA more than 15 minutes late?
Calm-weather odds: 6% · changed +1 pt in 24h
+1 pt
6%
Yes 6%
No 94%
Leave SAN more than 15 minutes late?
Calm-weather odds: 6% · changed +0 pts in 24h
+0 pts
6%
Yes 6%
No 94%
Arrive at BNA more than an hour late?
Calm-weather odds: 1% · changed +0 pts in 24h
+0 pts
1%
Yes 1%
No 99%
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
93%
15–30 min late
3%
30 min–1 hour late
2%
1–2 hours late
<1%
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
↑
SAN is busy at that time
↑
SAN is prone to delays
↑
This flight has been late 18% of the time recently
↓
Early flights usually leave on time
↓
Mostly benign weather forecast at BNA
Weather at each end
SAN (origin)
Gusts 22 kt Ceiling 1,700 ft Visibility 10+ mi Precip none
BNA (destination)
Gusts 5 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.