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 4283
SCHEDULED · TYPICAL SCHEDULE
Friday, October 2
WN 4283 · STL → SAN
departs 8:10 AM CT · arrives 9:50 AM PT
Forecast issued Fri 10:00 PM ET · 13h after departure
Watch this flight
Other days
Fri 10/2
Today 14%
Mon 10/5 12%
Fri 10/9 16%
Odds over time
Arrive at SAN more than 15 minutes late?
18%
chance · ±0 pts
−18 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
18%
Leave 15+ late
12%
Arrive 1h+ late
3%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
3.5d
2d
1d
12h
6h
Departs
Lands
Arrive at SAN more than 15 minutes late?
Calm-weather odds: 18% · changed −18 pts in 24h
−18 pts
18%
Yes 18%
No 82%
Leave STL more than 15 minutes late?
Calm-weather odds: 12% · changed −13 pts in 24h
−13 pts
12%
Yes 12%
No 88%
Arrive at SAN more than an hour late?
Calm-weather odds: 3% · changed −8 pts in 24h
−8 pts
3%
Yes 3%
No 97%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to SAN?
On time or early
82%
15–30 min late
12%
30 min–1 hour late
4%
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
↑
SAN is prone to delays
↑
Other factors
↑
This flight has been late 20% of the time recently
↓
Early flights usually leave on time
↓
8am departures from STL are usually not late
Weather at each end
STL (origin)
Gusts 20 kt Ceiling 600 ft Visibility 9 mi Precip 0.01 in
SAN (destination)
Gusts 19 kt Ceiling 300 ft Visibility 2.5 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.