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 1731
SCHEDULED · TYPICAL SCHEDULE
Friday, October 2 Today
WN 1731 · DEN → SLC
departs 11:45 AM MT · arrives 1:25 PM MT
Forecast issued Fri 6:00 PM ET · 4h after departure
Watch this flight
Other days
Today
Mon 10/5 12%
Odds over time
Arrive at SLC more than 15 minutes late?
14%
chance · ±0 pts
−1 pt · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
14%
Leave 15+ late
21%
Arrive 1h+ late
3%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
3.7d
2d
1d
12h
6h
Departs
Lands
Arrive at SLC more than 15 minutes late?
Calm-weather odds: 14% · changed −1 pt in 24h
−1 pt
14%
Yes 14%
No 86%
Leave DEN more than 15 minutes late?
Calm-weather odds: 21% · changed −1 pt in 24h
−1 pt
21%
Yes 21%
No 79%
Arrive at SLC more than an hour late?
Calm-weather odds: 3% · changed +0 pts in 24h
+0 pts
3%
Yes 3%
No 97%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to SLC?
On time or early
85%
15–30 min late
7%
30 min–1 hour late
4%
1–2 hours late
2%
Over 2 hours late
<1%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
11am departures from DEN are often late
↑
This flight has been late 30% of the time recently
↑
DEN is busy at that time
↓
Gusts to 31 kt forecast at DEN that day
↓
Mostly benign weather forecast at SLC
Weather at each end
DEN (origin)
Gusts 28 kt Ceiling none (clear) Visibility 10+ mi Precip none
SLC (destination)
Gusts 12 kt Ceiling none (clear) Visibility 9 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.