Schedule: a typical summer Friday (the flights of Jul 31, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SOUTHWEST · FLIGHT WN 3745
SCHEDULED · TYPICAL SCHEDULE
Friday, October 2 Today
WN 3745 · SLC → LAS
departs 8:30 PM MT · arrives 9:00 PM PT
Forecast issued Fri 12:00 PM ET · 10h before departure
Watch this flight
Other days
Today
Sun 10/4 35%
Mon 10/5 20%
Wed 10/7 16%
Odds over time
Arrive at LAS more than 15 minutes late?
48%
chance · ±0 pts
+16 pts · 24h
HOW SURE WE ARE
Good. The odds now lean mostly on firmed-up weather forecasts.
Arrive 15+ late
48%
Leave 15+ late
54%
Arrive 1h+ late
15%
Cancelled
3%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
4.0d
2d
1d
Now
6h
Departs
Lands
Arrive at LAS more than 15 minutes late?
Calm-weather odds: 30% · changed +16 pts in 24h
+16 pts
48%
Yes 48%
No 52%
Leave SLC more than 15 minutes late?
Calm-weather odds: 40% · changed +12 pts in 24h
+12 pts
54%
Yes 54%
No 46%
Arrive at LAS more than an hour late?
Calm-weather odds: 6% · changed +8 pts in 24h
+8 pts
15%
Yes 15%
No 85%
Cancelled?
Calm-weather odds: <1% · changed +3 pts in 24h
+3 pts
3%
Yes 3%
No 97%
How late will it get to LAS?
On time or early
50%
15–30 min late
24%
30 min–1 hour late
8%
1–2 hours late
13%
Over 2 hours late
2%
Cancelled
3%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Later flights pick up delays from earlier in the day
↑
Arrivals into LAS at that hour are often late
↑
WN's recent on-time record
↓
Mostly benign weather forecast at LAS
↓
Mostly benign weather forecast at SLC
Weather at each end
SLC (origin)
Gusts 12 kt Ceiling none (clear) Visibility 10+ mi Precip none
LAS (destination)
Gusts 10 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.