Schedule: a typical summer Sunday (the flights of Jul 26, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SOUTHWEST · FLIGHT WN 1158
SCHEDULED · TYPICAL SCHEDULE
Sunday, October 4 Tomorrow
WN 1158 · SAN → SFO
departs 8:00 PM PT · arrives 9:35 PM PT
Forecast issued Sat 4:00 PM ET · 31h before departure
Watch this flight
Odds over time
Arrive at SFO more than 15 minutes late?
53%
chance · ±7 pts
+5 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
53%
Leave 15+ late
52%
Arrive 1h+ late
15%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
20%
40%
60%
80%
6.0d
2d
Now
1d
12h
6h
Departs
Lands
Arrive at SFO more than 15 minutes late?
Calm-weather odds: 42% · changed +5 pts in 24h
+5 pts
53%
Yes 53%
No 47%
Leave SAN more than 15 minutes late?
Calm-weather odds: 50% · changed +5 pts in 24h
+5 pts
52%
Yes 52%
No 48%
Arrive at SFO more than an hour late?
Calm-weather odds: 12% · changed +1 pt in 24h
+1 pt
15%
Yes 15%
No 85%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to SFO?
On time or early
47%
15–30 min late
22%
30 min–1 hour late
16%
1–2 hours late
10%
Over 2 hours late
4%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Arrivals into SFO at that hour are often late
↑
Later flights pick up delays from earlier in the day
↑
WN's recent on-time record
↓
Mostly benign weather forecast at SFO
↓
Mostly benign weather forecast at SAN
Weather at each end
SAN (origin)
Gusts 14 kt Ceiling none (clear) Visibility 10+ mi Precip none
SFO (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.