Schedule: a typical Saturday (the flights of Jul 25, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
SOUTHWEST · FLIGHT WN 1737
SCHEDULED · TYPICAL SCHEDULE
Saturday, October 3
WN 1737 · DEN → SLC
departs 8:55 PM MT · arrives 10:40 PM MT
Forecast issued Thu 7:00 PM ET · 52h before departure
Watch this flight
Other days
Today 42%
Fri 10/2 37%
Sat 10/3
Sun 10/4 26%
Mon 10/5 23%
Tue 10/6 17%
Wed 10/7 15%
Odds over time
Arrive at SLC more than 15 minutes late?
22%
chance · ±6 pts
– · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
22%
Leave 15+ late
35%
Arrive 1h+ late
5%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
5.0d
Now
1d
12h
6h
Departs
Lands
Arrive at SLC more than 15 minutes late?
Calm-weather odds: 20% · changed – in 24h
–
22%
Yes 22%
No 78%
Leave DEN more than 15 minutes late?
Calm-weather odds: 30% · changed – in 24h
–
35%
Yes 35%
No 65%
Arrive at SLC more than an hour late?
Calm-weather odds: 5% · changed – in 24h
–
5%
Yes 5%
No 95%
Cancelled?
Calm-weather odds: <1% · changed – in 24h
–
<1%
Yes <1%
No 100%
How late will it get to SLC?
On time or early
77%
15–30 min late
8%
30 min–1 hour late
8%
1–2 hours late
4%
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
↑
Later flights pick up delays from earlier in the day
↑
8pm departures from DEN are often late
↑
This flight has been late 44% of the time recently
↓
Mostly benign weather forecast at SLC
↓
Mostly benign weather forecast at DEN
Weather at each end
DEN (origin)
Gusts 24 kt Ceiling none (clear) Visibility 10+ mi Precip none
SLC (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.