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 4633
SCHEDULED · TYPICAL SCHEDULE
Friday, October 2 Today
WN 4633 · DAL → SLC
departs 8:40 PM CT · arrives 10:20 PM MT
Forecast issued Fri 6:00 AM ET · 16h before departure
Watch this flight
Other days
Today
Sat 10/3 44%
Mon 10/5 30%
Odds over time
Arrive at SLC more than 15 minutes late?
56%
chance · ±0 pts
+0 pts · 24h
HOW SURE WE ARE
Good. The odds now lean mostly on firmed-up weather forecasts.
Arrive 15+ late
56%
Leave 15+ late
59%
Arrive 1h+ late
18%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
20%
40%
60%
80%
4.0d
2d
1d
Now
12h
6h
Departs
Lands
Arrive at SLC more than 15 minutes late?
Calm-weather odds: 45% · changed +0 pts in 24h
+0 pts
56%
Yes 56%
No 44%
Leave DAL more than 15 minutes late?
Calm-weather odds: 50% · changed −6 pts in 24h
−6 pts
59%
Yes 59%
No 41%
Arrive at SLC more than an hour late?
Calm-weather odds: 10% · changed +1 pt in 24h
+1 pt
18%
Yes 18%
No 82%
Cancelled?
Calm-weather odds: <1% · changed −1 pt in 24h
−1 pt
<1%
Yes <1%
No 99%
How late will it get to SLC?
On time or early
44%
15–30 min late
25%
30 min–1 hour late
12%
1–2 hours late
15%
Over 2 hours late
3%
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
↑
Cloud base down to 700 ft, 0.4 in of rain forecast at DAL that day
↑
DAL is prone to delays
↓
Mostly benign weather forecast at SLC
↓
DAL is quiet at that time
Weather at each end
DAL (origin)
Gusts 16 kt Ceiling 700 ft Visibility 2.5 mi Precip 0.52 in
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.