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 3508
SCHEDULED · TYPICAL SCHEDULE
Sunday, October 4 Tomorrow
WN 3508 · DEN → SAN
departs 10:05 AM MT · arrives 11:35 AM PT
Forecast issued Sat 2:00 PM ET · 22h before departure
Watch this flight
Odds over time
Arrive at SAN more than 15 minutes late?
25%
chance · ±8 pts
+3 pts · 24h
HOW SURE WE ARE
Good. The odds now lean mostly on firmed-up weather forecasts.
Arrive 15+ late
25%
Leave 15+ late
18%
Arrive 1h+ late
4%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
5.6d
2d
Now
12h
6h
Departs
Lands
Arrive at SAN more than 15 minutes late?
Calm-weather odds: 20% · changed +3 pts in 24h
+3 pts
25%
Yes 25%
No 75%
Leave DEN more than 15 minutes late?
Calm-weather odds: 18% · changed +0 pts in 24h
+0 pts
18%
Yes 18%
No 82%
Arrive at SAN more than an hour late?
Calm-weather odds: 3% · changed −1 pt in 24h
−1 pt
4%
Yes 4%
No 96%
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
75%
15–30 min late
15%
30 min–1 hour late
5%
1–2 hours late
3%
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
↑
Arrivals into SAN at that hour are often late
↑
SAN is prone to delays
↑
10am departures from DEN are often late
↓
Early flights usually leave on time
↓
Mostly benign weather forecast at SAN
Weather at each end
DEN (origin)
Gusts 24 kt Ceiling none (clear) Visibility 10+ mi Precip none
SAN (destination)
Gusts 14 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.