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 3745
SCHEDULED · TYPICAL SCHEDULE
Sunday, October 4
WN 3745 · SLC → LAS
departs 9:20 PM MT · arrives 9:45 PM PT
Forecast issued Fri 6:00 PM ET · 53h before departure
Watch this flight
Other days
Today 42%
Sun 10/4
Mon 10/5 20%
Odds over time
Arrive at LAS more than 15 minutes late?
33%
chance · ±5 pts
– · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
33%
Leave 15+ late
38%
Arrive 1h+ late
6%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
6.1d
Now
1d
12h
6h
Departs
Lands
Arrive at LAS more than 15 minutes late?
Calm-weather odds: 30% · changed – in 24h
–
33%
Yes 33%
No 67%
Leave SLC more than 15 minutes late?
Calm-weather odds: 36% · changed – in 24h
–
38%
Yes 38%
No 62%
Arrive at LAS more than an hour late?
Calm-weather odds: 6% · changed – in 24h
–
6%
Yes 6%
No 94%
Cancelled?
Calm-weather odds: <1% · changed – in 24h
–
<1%
Yes <1%
No 100%
How late will it get to LAS?
On time or early
67%
15–30 min late
14%
30 min–1 hour late
13%
1–2 hours late
4%
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
↑
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 11 kt Ceiling none (clear) Visibility 10+ mi Precip none
LAS (destination)
Gusts 13 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.