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 2646
SCHEDULED · TYPICAL SCHEDULE
Tuesday, September 29 Yesterday
WN 2646 · DEN → SLC
departs 8:30 PM MT · arrives 10:10 PM MT
Forecast issued Tue 10:00 PM ET · 0h before departure
Watch this flight
Other days
Tue 9/29
Today 47%
Sun 10/4 35%
Tue 10/6 19%
Odds over time
Arrive at SLC more than 15 minutes late?
25%
chance · ±2 pts
−7 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
25%
Leave 15+ late
42%
Arrive 1h+ late
5%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
20%
40%
60%
80%
2.9d
2d
1d
12h
6h
Now
Departs
Lands
Arrive at SLC more than 15 minutes late?
Calm-weather odds: 23% · changed −7 pts in 24h
−7 pts
25%
Yes 25%
No 75%
Leave DEN more than 15 minutes late?
Calm-weather odds: 35% · changed −3 pts in 24h
−3 pts
42%
Yes 42%
No 58%
Arrive at SLC more than an hour late?
Calm-weather odds: 4% · changed +0 pts in 24h
+0 pts
5%
Yes 5%
No 95%
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
75%
15–30 min late
11%
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
↑
8pm departures from DEN are often late
↑
Later flights pick up delays from earlier in the day
↑
This flight has been late 30% of the time recently
↓
Tuesdays in September are usually quieter than average
↓
Mostly benign weather forecast at DEN
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.