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 3575
SCHEDULED · TYPICAL SCHEDULE
Wednesday, September 30 Tomorrow
WN 3575 · SAT → LAS
departs 3:20 PM CT · arrives 4:10 PM PT
Forecast issued Tue 5:00 PM ET · 23h before departure
Watch this flight
Other days
Today 39%
Wed 9/30
Thu 10/1 46%
Fri 10/2 27%
Mon 10/5 22%
Odds over time
Arrive at LAS more than 15 minutes late?
28%
chance · ±5 pts
+4 pts · 24h
HOW SURE WE ARE
Good. The odds now lean mostly on firmed-up weather forecasts.
Arrive 15+ late
28%
Leave 15+ late
31%
Arrive 1h+ late
5%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
2.8d
2d
Now
12h
6h
Departs
Lands
Arrive at LAS more than 15 minutes late?
Calm-weather odds: 18% · changed +4 pts in 24h
+4 pts
28%
Yes 28%
No 72%
Leave SAT more than 15 minutes late?
Calm-weather odds: 25% · changed +2 pts in 24h
+2 pts
31%
Yes 31%
No 69%
Arrive at LAS more than an hour late?
Calm-weather odds: 3% · changed −2 pts in 24h
−2 pts
5%
Yes 5%
No 95%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to LAS?
On time or early
72%
15–30 min late
16%
30 min–1 hour late
7%
1–2 hours late
3%
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
↑
LAS is prone to delays
↑
Arrivals into LAS at that hour are often late
↑
Gusts to 25 kt, cloud base down to 1,300 ft forecast at SAT that day
↓
Wednesdays in September are usually quieter than average
↓
Mostly benign weather forecast at LAS
Weather at each end
SAT (origin)
Gusts 25 kt Ceiling 1,300 ft Visibility 10+ mi Precip 0.01 in
LAS (destination)
Gusts 18 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.