Schedule: the flights that flew on Tuesday, Oct 6, re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SOUTHWEST · FLIGHT WN 4270
SCHEDULED · TYPICAL SCHEDULE
Tuesday, October 13 Tomorrow
WN 4270 · DEN → SLC
departs 8:41 PM MT · arrives 10:09 PM MT
Forecast issued Mon 5:00 AM ET · 42h before departure
Watch this flight
Other days
Today 64%
Tue 10/13
Wed 10/14 58%
Thu 10/15 34%
Fri 10/16 36%
Sat 10/17 24%
Sun 10/18 38%
Odds over time
Arrive at SLC more than 15 minutes late?
41%
chance · ±11 pts
−9 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
41%
Leave 15+ late
35%
Arrive 1h+ late
6%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
20%
40%
60%
80%
6.9d
Now
1d
12h
6h
Departs
Lands
Arrive at SLC more than 15 minutes late?
Calm-weather odds: 22% · changed −9 pts in 24h
−9 pts
41%
Yes 41%
No 59%
Leave DEN more than 15 minutes late?
Calm-weather odds: 28% · changed −16 pts in 24h
−16 pts
35%
Yes 35%
No 65%
Arrive at SLC more than an hour late?
Calm-weather odds: 4% · changed −4 pts in 24h
−4 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
58%
15–30 min late
25%
30 min–1 hour late
11%
1–2 hours late
4%
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
↑
8pm departures from DEN are often late
↑
0.6 in of rain forecast at SLC that day
↑
Later flights pick up delays from earlier in the day
↓
Tuesdays in October are usually quieter than average
↓
Cloud base down to 1,300 ft forecast at DEN that day
Weather at each end
DEN (origin)
Gusts 20 kt Ceiling 1,300 ft Visibility 10+ mi Precip none
SLC (destination)
Gusts 16 kt Ceiling 2,200 ft Visibility 6 mi Precip 0.61 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.