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 3257
SCHEDULED · TYPICAL SCHEDULE
Thursday, October 1
WN 3257 · COS → LAS
departs 12:35 PM MT · arrives 1:35 PM PT
Forecast issued Tue 5:00 PM ET · 46h before departure
Watch this flight
Other days
Thu 10/1
Fri 10/2 19%
Mon 10/5 18%
Odds over time
Arrive at LAS more than 15 minutes late?
20%
chance · ±4 pts
−3 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
20%
Leave 15+ late
23%
Arrive 1h+ late
9%
Cancelled
3%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
2.9d
Now
1d
12h
6h
Departs
Lands
Arrive at LAS more than 15 minutes late?
Calm-weather odds: 16% · changed −3 pts in 24h
−3 pts
20%
Yes 20%
No 80%
Leave COS more than 15 minutes late?
Calm-weather odds: 16% · changed −1 pt in 24h
−1 pt
23%
Yes 23%
No 77%
Arrive at LAS more than an hour late?
Calm-weather odds: 5% · changed +0 pts in 24h
+0 pts
9%
Yes 9%
No 91%
Cancelled?
Calm-weather odds: <1% · changed −1 pt in 24h
−1 pt
3%
Yes 3%
No 97%
How late will it get to LAS?
On time or early
77%
15–30 min late
<1%
30 min–1 hour late
11%
1–2 hours late
5%
Over 2 hours late
4%
Cancelled
3%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Gusts to 40 kt forecast at COS that day
↑
LAS is prone to delays
↑
This flight has been late 32% of the time recently
↓
Mostly benign weather forecast at LAS
↓
COS usually runs smoothly
Weather at each end
COS (origin)
Gusts 40 kt Ceiling 2,700 ft Visibility 7 mi Precip 0.15 in
LAS (destination)
Gusts 10 kt Ceiling none (clear) 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.