Schedule: the flights that flew on Sunday, Oct 25, re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SOUTHWEST · FLIGHT WN 3854
SCHEDULED · TYPICAL SCHEDULE
Sunday, November 1 Tomorrow
WN 3854 · SLC → DEN
departs 7:36 PM MT · arrives 9:06 PM MT
Forecast issued Sat 6:00 AM ET · 41h before departure
Watch this flight
Odds over time
Arrive at DEN more than 15 minutes late?
56%
chance · ±15 pts
−2 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
56%
Leave 15+ late
66%
Arrive 1h+ late
25%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
20%
40%
60%
80%
6.9d
2d
Now
1d
12h
6h
Departs
Lands
Arrive at DEN more than 15 minutes late?
Calm-weather odds: 23% · changed −2 pts in 24h
−2 pts
56%
Yes 56%
No 44%
Leave SLC more than 15 minutes late?
Calm-weather odds: 43% · changed −2 pts in 24h
−2 pts
66%
Yes 66%
No 34%
Arrive at DEN more than an hour late?
Calm-weather odds: 7% · changed +5 pts in 24h
+5 pts
25%
Yes 25%
No 75%
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
44%
15–30 min late
20%
30 min–1 hour late
11%
1–2 hours late
17%
Over 2 hours late
7%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Cloud base down to 800 ft, visibility down to 0.7 mi, 1.0 in of rain forecast at SLC that day
↑
WN's recent on-time record
↑
Later flights pick up delays from earlier in the day
↓
SLC usually runs smoothly
↓
DEN usually runs smoothly
Weather at each end
SLC (origin)
Gusts 22 kt Ceiling 800 ft Visibility 0.7 mi Precip 0.96 in
DEN (destination)
Gusts 34 kt Ceiling 8,000 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.