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 1227
SCHEDULED · TYPICAL SCHEDULE
Wednesday, September 30 Today
WN 1227 · COS → LAS
departs 7:05 PM MT · arrives 8:05 PM PT
Forecast issued Wed 2:00 AM ET · 19h before departure
Watch this flight
Other days
Today
Thu 10/1 20%
Fri 10/2 23%
Sat 10/3 15%
Mon 10/5 20%
Tue 10/6 14%
Odds over time
Arrive at LAS more than 15 minutes late?
45%
chance · ±11 pts
+1 pt · 24h
HOW SURE WE ARE
Good. The odds now lean mostly on firmed-up weather forecasts.
Arrive 15+ late
45%
Leave 15+ late
48%
Arrive 1h+ late
16%
Cancelled
4%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
20%
40%
60%
80%
2.8d
2d
1d
Now
12h
6h
Departs
Lands
Arrive at LAS more than 15 minutes late?
Calm-weather odds: 19% · changed +1 pt in 24h
+1 pt
45%
Yes 45%
No 55%
Leave COS more than 15 minutes late?
Calm-weather odds: 25% · changed +1 pt in 24h
+1 pt
48%
Yes 48%
No 52%
Arrive at LAS more than an hour late?
Calm-weather odds: 5% · changed +1 pt in 24h
+1 pt
16%
Yes 16%
No 84%
Cancelled?
Calm-weather odds: <1% · changed −7 pts in 24h
−7 pts
4%
Yes 4%
No 96%
How late will it get to LAS?
On time or early
53%
15–30 min late
17%
30 min–1 hour late
11%
1–2 hours late
9%
Over 2 hours late
6%
Cancelled
4%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Gusts to 40 kt, cloud base down to 1,300 ft, visibility down to 2 mi, 0.8 in of rain forecast at COS that day
↑
Arrivals into LAS at that hour are often late
↑
Later flights pick up delays from earlier in the day
↓
Mostly benign weather forecast at LAS
↓
Wednesdays in September are usually quieter than average
Weather at each end
COS (origin)
Gusts 40 kt Ceiling 1,300 ft Visibility 2 mi Precip 0.81 in
LAS (destination)
Gusts 16 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.