Schedule: a typical summer Saturday (the flights of Jul 25, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SKYWEST · FLIGHT OO 4638
SCHEDULED · TYPICAL SCHEDULE
Saturday, October 3 Tomorrow
OO 4638 · ORD → COS
departs 7:45 PM CT · arrives 9:55 PM MT
Forecast issued Fri 2:00 AM ET · 43h before departure
Watch this flight
Other days
Today 27%
Sat 10/3
Sun 10/4 26%
Mon 10/5 29%
Tue 10/6 29%
Wed 10/7 28%
Thu 10/8 20%
Odds over time
Arrive at COS more than 15 minutes late?
19%
chance · ±3 pts
+0 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
19%
Leave 15+ late
24%
Arrive 1h+ late
9%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
4.9d
Now
1d
12h
6h
Departs
Lands
Arrive at COS more than 15 minutes late?
Calm-weather odds: 16% · changed +0 pts in 24h
+0 pts
19%
Yes 19%
No 81%
Leave ORD more than 15 minutes late?
Calm-weather odds: 22% · changed +1 pt in 24h
+1 pt
24%
Yes 24%
No 76%
Arrive at COS more than an hour late?
Calm-weather odds: 10% · changed +0 pts in 24h
+0 pts
9%
Yes 9%
No 91%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to COS?
On time or early
80%
15–30 min late
5%
30 min–1 hour late
4%
1–2 hours late
8%
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
↑
7pm departures from ORD are often late
↑
This flight has been late 33% of the time recently
↑
Later flights pick up delays from earlier in the day
↓
Mostly benign weather forecast at ORD
↓
Other factors
Weather at each end
ORD (origin)
Gusts 8 kt Ceiling none (clear) Visibility 10+ mi Precip none
COS (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.