Schedule: a typical Thursday (the flights of Jul 30, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
SOUTHWEST · FLIGHT WN 3740
SCHEDULED · TYPICAL SCHEDULE
Thursday, October 1 Tomorrow
WN 3740 · SLC → DEN
departs 4:50 PM MT · arrives 6:20 PM MT
Forecast issued Wed 6:00 AM ET · 37h before departure
Watch this flight
Other days
Today 60%
Thu 10/1
Fri 10/2 38%
Sat 10/3 28%
Sun 10/4 32%
Mon 10/5 31%
Tue 10/6 24%
Odds over time
Arrive at DEN more than 15 minutes late?
39%
chance · ±4 pts
−7 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
39%
Leave 15+ late
43%
Arrive 1h+ late
8%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
2.8d
2d
Now
1d
12h
6h
Departs
Lands
Arrive at DEN more than 15 minutes late?
Calm-weather odds: 24% · changed −7 pts in 24h
−7 pts
39%
Yes 39%
No 61%
Leave SLC more than 15 minutes late?
Calm-weather odds: 37% · changed −2 pts in 24h
−2 pts
43%
Yes 43%
No 57%
Arrive at DEN more than an hour late?
Calm-weather odds: 5% · changed −2 pts in 24h
−2 pts
8%
Yes 8%
No 92%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to DEN?
On time or early
61%
15–30 min late
20%
30 min–1 hour late
11%
1–2 hours late
6%
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
↑
Later flights pick up delays from earlier in the day
↑
WN's recent on-time record
↓
Thursdays in October are usually quieter than average
↓
Mostly benign weather forecast at SLC
Weather at each end
SLC (origin)
Gusts 11 kt Ceiling none (clear) Visibility 10+ mi Precip none
DEN (destination)
Gusts 22 kt Ceiling 9,000 ft Visibility 9 mi Precip 0.03 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.