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.
SKYWEST · FLIGHT OO 3940
SCHEDULED · TYPICAL SCHEDULE
Thursday, October 1 Tomorrow
OO 3940 · COS → SLC
departs 8:10 AM MT · arrives 10:09 AM MT
Forecast issued Wed 1:00 PM ET · 21h before departure
Watch this flight
Other days
Today 7%
Thu 10/1
Fri 10/2 4%
Sat 10/3 5%
Sun 10/4 5%
Mon 10/5 4%
Tue 10/6 4%
Odds over time
Arrive at SLC more than 15 minutes late?
7%
chance · ±2 pts
+1 pt · 24h
HOW SURE WE ARE
Good. The odds now lean mostly on firmed-up weather forecasts.
Arrive 15+ late
7%
Leave 15+ late
11%
Arrive 1h+ late
6%
Cancelled
1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
3%
6%
9%
12%
2.8d
2d
Now
12h
6h
Departs
Lands
Arrive at SLC more than 15 minutes late?
Calm-weather odds: 5% · changed +1 pt in 24h
+1 pt
7%
Yes 7%
No 93%
Leave COS more than 15 minutes late?
Calm-weather odds: 7% · changed +0 pts in 24h
+0 pts
11%
Yes 11%
No 89%
Arrive at SLC more than an hour late?
Calm-weather odds: 4% · changed +1 pt in 24h
+1 pt
6%
Yes 6%
No 94%
Cancelled?
Calm-weather odds: <1% · changed −1 pt in 24h
−1 pt
1%
Yes 1%
No 99%
How late will it get to SLC?
On time or early
92%
15–30 min late
0%
30 min–1 hour late
1%
1–2 hours late
1%
Over 2 hours late
4%
Cancelled
1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Gusts to 36 kt forecast at COS that day
↓
This flight has been late 5% of the time recently
↓
Mostly benign weather forecast at SLC
Weather at each end
COS (origin)
Gusts 36 kt Ceiling 3,500 ft Visibility 6 mi Precip 0.20 in
SLC (destination)
Gusts 11 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.