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 4385
SCHEDULED · TYPICAL SCHEDULE
Wednesday, September 30 Today
WN 4385 · HOU → COS
departs 5:55 PM CT · arrives 7:15 PM MT
Forecast issued Wed 9:00 PM ET · 2h after departure
Watch this flight
Other days
Today
Thu 10/1 46%
Fri 10/2 44%
Sun 10/4 26%
Mon 10/5 32%
Tue 10/6 21%
Odds over time
Arrive at COS more than 15 minutes late?
30%
chance · ±1 pts
−21 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
30%
Leave 15+ late
28%
Arrive 1h+ late
8%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
20%
40%
60%
80%
2.8d
2d
1d
12h
6h
Departs
Lands
Arrive at COS more than 15 minutes late?
Calm-weather odds: 30% · changed −21 pts in 24h
−21 pts
30%
Yes 30%
No 70%
Leave HOU more than 15 minutes late?
Calm-weather odds: 28% · changed −22 pts in 24h
−22 pts
28%
Yes 28%
No 72%
Arrive at COS more than an hour late?
Calm-weather odds: 7% · changed −12 pts in 24h
−12 pts
8%
Yes 8%
No 92%
Cancelled?
Calm-weather odds: <1% · changed −3 pts in 24h
−3 pts
<1%
Yes <1%
No 99%
How late will it get to COS?
On time or early
69%
15–30 min late
13%
30 min–1 hour late
9%
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
↑
Gusts to 35 kt, visibility down to 2 mi, 0.6 in of rain forecast at COS that day
↑
Later flights pick up delays from earlier in the day
↑
This flight has been late 33% of the time recently
↓
Wednesdays in September are usually quieter than average
↓
COS usually runs smoothly
Weather at each end
HOU (origin)
Gusts 22 kt Ceiling 5,000 ft Visibility 10+ mi Precip none
COS (destination)
Gusts 27 kt Ceiling 1,700 ft Visibility 2 mi Precip 0.63 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.