Schedule: a typical Tuesday (the flights of Jul 28, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
SOUTHWEST · FLIGHT WN 1227
SCHEDULED · TYPICAL SCHEDULE
Tuesday, September 29 Today
WN 1227 · COS → LAS
departs 7:05 PM MT · arrives 8:05 PM PT
Forecast issued Tue 9:00 PM ET · 0h before departure
Watch this flight
Other days
Today
Wed 9/30 44%
Thu 10/1 22%
Fri 10/2 24%
Sat 10/3 15%
Mon 10/5 20%
Odds over time
Arrive at LAS more than 15 minutes late?
40%
chance · ±2 pts
+7 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
40%
Leave 15+ late
35%
Arrive 1h+ late
12%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
2.8d
2d
1d
12h
6h
Departs
Lands
Arrive at LAS more than 15 minutes late?
Calm-weather odds: 38% · changed +7 pts in 24h
+7 pts
40%
Yes 40%
No 60%
Leave COS more than 15 minutes late?
Calm-weather odds: 32% · changed +3 pts in 24h
+3 pts
35%
Yes 35%
No 65%
Arrive at LAS more than an hour late?
Calm-weather odds: 10% · changed +3 pts in 24h
+3 pts
12%
Yes 12%
No 88%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to LAS?
On time or early
60%
15–30 min late
18%
30 min–1 hour late
10%
1–2 hours late
10%
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
↑
Arrivals into LAS at that hour are often late
↑
LAS is prone to delays
↑
Later flights pick up delays from earlier in the day
↓
Tuesdays in September are usually quieter than average
↓
COS usually runs smoothly
Weather at each end
COS (origin)
Gusts 24 kt Ceiling 6,000 ft Visibility 10+ mi Precip 0.08 in
LAS (destination)
Gusts 27 kt Ceiling 4,700 ft Visibility 7 mi Precip 0.08 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.