Schedule: a typical Tuesday (the flights of Jul 28, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
SOUTHWEST · FLIGHT WN 1737
SCHEDULED · TYPICAL SCHEDULE
Tuesday, September 29
WN 1737 · DEN → SLC
departs 9:35 PM MT · arrives 11:20 PM MT
Forecast issued Tue 10:00 PM ET · 2h before departure
Watch this flight
Other days
Tue 9/29
Today 35%
Fri 10/2 41%
Sat 10/3 23%
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 · ±2 pts
−9 pts · 24h
HOW SURE WE ARE
High. The odds now come mostly from live FAA and airport data.
Arrive 15+ late
22%
Leave 15+ late
43%
Arrive 1h+ late
6%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
2.9d
2d
1d
12h
6h
Now
Departs
Lands
Arrive at SLC more than 15 minutes late?
Calm-weather odds: 23% · changed −9 pts in 24h
−9 pts
22%
Yes 22%
No 78%
Leave DEN more than 15 minutes late?
Calm-weather odds: 34% · changed +1 pt in 24h
+1 pt
43%
Yes 43%
No 57%
Arrive at SLC more than an hour late?
Calm-weather odds: 5% · changed +0 pts in 24h
+0 pts
6%
Yes 6%
No 94%
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
77%
15–30 min late
8%
30 min–1 hour late
9%
1–2 hours late
5%
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
↑
9pm departures from DEN are often late
↑
Later flights pick up delays from earlier in the day
↑
This flight has been late 39% of the time recently
↓
Tuesdays in September are usually quieter than average
↓
Other factors
Weather at each end
DEN (origin)
Gusts 9 kt Ceiling 6,000 ft Visibility 10+ mi Precip none
SLC (destination)
Gusts 15 kt Ceiling 6,500 ft 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.