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.
SKYWEST · FLIGHT OO 4120
SCHEDULED · TYPICAL SCHEDULE
Wednesday, September 30 Tomorrow
OO 4120 · ROC → DTW
departs 12:33 PM ET · arrives 1:55 PM ET
Forecast issued Tue 9:00 PM ET · 16h before departure
Watch this flight
Other days
Today 13%
Wed 9/30
Thu 10/1 16%
Fri 10/2 12%
Sun 10/4 13%
Mon 10/5 13%
Odds over time
Arrive at DTW more than 15 minutes late?
18%
chance · ±0 pts
+8 pts · 24h
HOW SURE WE ARE
Good. The odds now lean mostly on firmed-up weather forecasts.
Arrive 15+ late
18%
Leave 15+ late
18%
Arrive 1h+ late
8%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
2.9d
2d
1d
Now
12h
6h
Departs
Lands
Arrive at DTW more than 15 minutes late?
Calm-weather odds: 13% · changed +8 pts in 24h
+8 pts
18%
Yes 18%
No 82%
Leave ROC more than 15 minutes late?
Calm-weather odds: 15% · changed +4 pts in 24h
+4 pts
18%
Yes 18%
No 82%
Arrive at DTW more than an hour late?
Calm-weather odds: 6% · changed +2 pts in 24h
+2 pts
8%
Yes 8%
No 92%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to DTW?
On time or early
82%
15–30 min late
7%
30 min–1 hour late
2%
1–2 hours late
4%
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
↑
OO's recent on-time record
↑
This flight has been late 26% of the time recently
↑
12pm departures from ROC are often late
↓
Wednesdays in September are usually quieter than average
↓
DTW usually runs smoothly
Weather at each end
ROC (origin)
Gusts 9 kt Ceiling 9,000 ft Visibility 9 mi Precip none
DTW (destination)
Gusts 15 kt Ceiling 4,500 ft Visibility 7 mi Precip 0.04 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.