Schedule: a typical Thursday (the flights of Jul 30, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
SOUTHWEST · FLIGHT WN 3503
SCHEDULED · TYPICAL SCHEDULE
Thursday, October 1 Tomorrow
WN 3503 · DEN → SAN
departs 12:55 PM MT · arrives 2:15 PM PT
Forecast issued Wed 4:00 AM ET · 35h before departure
Watch this flight
Other days
Today 46%
Thu 10/1
Fri 10/2 30%
Sat 10/3 24%
Sun 10/4 28%
Mon 10/5 26%
Tue 10/6 22%
Odds over time
Arrive at SAN more than 15 minutes late?
35%
chance · ±4 pts
+0 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
35%
Leave 15+ late
37%
Arrive 1h+ late
9%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
2.8d
2d
Now
1d
12h
6h
Departs
Lands
Arrive at SAN more than 15 minutes late?
Calm-weather odds: 20% · changed +0 pts in 24h
+0 pts
35%
Yes 35%
No 65%
Leave DEN more than 15 minutes late?
Calm-weather odds: 31% · changed −5 pts in 24h
−5 pts
37%
Yes 37%
No 63%
Arrive at SAN more than an hour late?
Calm-weather odds: 6% · changed −1 pt in 24h
−1 pt
9%
Yes 9%
No 91%
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
65%
15–30 min late
18%
30 min–1 hour late
7%
1–2 hours late
7%
Over 2 hours late
2%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
This flight has been late 51% of the time recently
↑
WN's recent on-time record
↑
12pm departures from DEN are often late
↓
DEN usually runs smoothly
↓
Mostly benign weather forecast at DEN
Weather at each end
DEN (origin)
Gusts 22 kt Ceiling 9,000 ft Visibility 7 mi Precip 0.03 in
SAN (destination)
Gusts 14 kt Ceiling 600 ft Visibility 7 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.