Schedule: a typical Wednesday (the flights of Jul 29, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
SOUTHWEST · FLIGHT WN 3555
SCHEDULED · TYPICAL SCHEDULE
Wednesday, September 30 Today
WN 3555 · SAN → TUS
departs 8:40 AM PT · arrives 10:10 AM MT
Forecast issued Wed 3:00 PM ET · 3h after departure
Watch this flight
Other days
Today
Thu 10/1 12%
Fri 10/2 10%
Sun 10/4 10%
Mon 10/5 10%
Tue 10/6 11%
Odds over time
Arrive at TUS more than 15 minutes late?
15%
chance · ±0 pts
+3 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
15%
Leave 15+ late
13%
Arrive 1h+ late
3%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
2.9d
2d
1d
12h
6h
Departs
Lands
Arrive at TUS more than 15 minutes late?
Calm-weather odds: 15% · changed +3 pts in 24h
+3 pts
15%
Yes 15%
No 85%
Leave SAN more than 15 minutes late?
Calm-weather odds: 13% · changed +1 pt in 24h
+1 pt
13%
Yes 13%
No 87%
Arrive at TUS more than an hour late?
Calm-weather odds: 3% · changed +0 pts in 24h
+0 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 TUS?
On time or early
84%
15–30 min late
9%
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
↑
Mostly benign weather forecast at TUS
↑
SAN is busy at that time
↑
This flight has been late 16% of the time recently
↓
Arrivals into TUS at that hour are usually not late
↓
Early flights usually leave on time
Weather at each end
SAN (origin)
Gusts 10 kt Ceiling 700 ft Visibility 8 mi Precip none
TUS (destination)
Gusts 13 kt Ceiling 6,500 ft Visibility 6 mi Precip 0.04 in
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.