Schedule: a typical Wednesday (the flights of Jul 29, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
SOUTHWEST · FLIGHT WN 3741
SCHEDULED · TYPICAL SCHEDULE
Wednesday, September 30 Today
WN 3741 · SLC → DEN
departs 5:00 PM MT · arrives 6:30 PM MT
Forecast issued Wed 4:00 AM ET · 15h before departure
Watch this flight
Other days
Today
Thu 10/1 30%
Fri 10/2 26%
Sun 10/4 23%
Mon 10/5 21%
Tue 10/6 24%
Odds over time
Arrive at DEN more than 15 minutes late?
58%
chance · ±3 pts
−18 pts · 24h
HOW SURE WE ARE
Good. The odds now lean mostly on firmed-up weather forecasts.
Arrive 15+ late
58%
Leave 15+ late
45%
Arrive 1h+ late
13%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
25%
50%
75%
100%
2.8d
2d
1d
Now
12h
6h
Departs
Lands
Arrive at DEN more than 15 minutes late?
Calm-weather odds: 24% · changed −18 pts in 24h
−18 pts
58%
Yes 58%
No 42%
Leave SLC more than 15 minutes late?
Calm-weather odds: 30% · changed −9 pts in 24h
−9 pts
45%
Yes 45%
No 55%
Arrive at DEN more than an hour late?
Calm-weather odds: 4% · changed −15 pts in 24h
−15 pts
13%
Yes 13%
No 87%
Cancelled?
Calm-weather odds: <1% · changed −1 pt in 24h
−1 pt
<1%
Yes <1%
No 99%
How late will it get to DEN?
On time or early
42%
15–30 min late
20%
30 min–1 hour late
25%
1–2 hours late
11%
Over 2 hours late
2%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Arrivals into DEN at that hour are often late
↑
Mostly benign weather forecast at DEN
↑
Later flights pick up delays from earlier in the day
↓
Wednesdays in September are usually quieter than average
↓
Mostly benign weather forecast at SLC
Weather at each end
SLC (origin)
Gusts 16 kt Ceiling none (clear) Visibility 10+ mi Precip none
DEN (destination)
Gusts 19 kt Ceiling 4,500 ft Visibility 8 mi Precip 0.11 in
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.