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 4225
SCHEDULED · TYPICAL SCHEDULE
Friday, October 2 Today
WN 4225 · LAS → SLC
departs 8:25 PM PT · arrives 10:55 PM MT
Forecast issued Fri 3:00 PM ET · 8h before departure
Watch this flight
Other days
Today
Sun 10/4 35%
Mon 10/5 22%
Odds over time
Arrive at SLC more than 15 minutes late?
42%
chance · ±0 pts
+6 pts · 24h
HOW SURE WE ARE
Good. The odds now lean mostly on firmed-up weather forecasts.
Arrive 15+ late
42%
Leave 15+ late
55%
Arrive 1h+ late
14%
Cancelled
3%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
4.1d
2d
1d
12h
Now
6h
Departs
Lands
Arrive at SLC more than 15 minutes late?
Calm-weather odds: 30% · changed +6 pts in 24h
+6 pts
42%
Yes 42%
No 58%
Leave LAS more than 15 minutes late?
Calm-weather odds: 42% · changed +13 pts in 24h
+13 pts
55%
Yes 55%
No 45%
Arrive at SLC more than an hour late?
Calm-weather odds: 8% · changed +5 pts in 24h
+5 pts
14%
Yes 14%
No 86%
Cancelled?
Calm-weather odds: <1% · changed +3 pts in 24h
+3 pts
3%
Yes 3%
No 97%
How late will it get to SLC?
On time or early
56%
15–30 min late
21%
30 min–1 hour late
6%
1–2 hours late
12%
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
↑
WN's recent on-time record
↑
8pm departures from LAS are often late
↓
Mostly benign weather forecast at LAS
↓
Mostly benign weather forecast at SLC
Weather at each end
LAS (origin)
Gusts 9 kt Ceiling none (clear) Visibility 10+ mi Precip none
SLC (destination)
Gusts 12 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.