Schedule: a typical summer Friday (the flights of Jul 31, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SOUTHWEST · FLIGHT WN 1220
SCHEDULED · TYPICAL SCHEDULE
Friday, October 2 Today
WN 1220 · COS → DEN
departs 5:45 AM MT · arrives 6:45 AM MT
Forecast issued Fri 12:00 PM ET · 4h after departure
Watch this flight
Other days
Today
Sat 10/3 4%
Mon 10/5 4%
Wed 10/7 3%
Odds over time
Arrive at DEN more than 15 minutes late?
4%
chance · ±0 pts
+1 pt · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
4%
Leave 15+ late
5%
Arrive 1h+ late
1%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
5%
10%
15%
20%
3.4d
2d
1d
12h
6h
Departs
Lands
Arrive at DEN more than 15 minutes late?
Calm-weather odds: 4% · changed +1 pt in 24h
+1 pt
4%
Yes 4%
No 96%
Leave COS more than 15 minutes late?
Calm-weather odds: 5% · changed +1 pt in 24h
+1 pt
5%
Yes 5%
No 95%
Arrive at DEN more than an hour late?
Calm-weather odds: 1% · changed +0 pts in 24h
+0 pts
1%
Yes 1%
No 99%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to DEN?
On time or early
96%
15–30 min late
0%
30 min–1 hour late
2%
1–2 hours late
<1%
Over 2 hours late
<1%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
DEN is busy at that time
↓
Early flights usually leave on time
↓
5am departures from COS are usually not late
Weather at each end
COS (origin)
Gusts 27 kt Ceiling 200 ft Visibility 0.13 mi Precip none
DEN (destination)
Gusts 31 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.