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 Today
OO 4120 · DTW → ROC
departs 10:20 AM ET · arrives 11:45 AM ET
Forecast issued Wed 8:00 PM ET · 10h after departure
Watch this flight
Other days
Today
Thu 10/1 15%
Fri 10/2 16%
Sun 10/4 13%
Mon 10/5 14%
Tue 10/6 13%
Odds over time
Arrive at ROC more than 15 minutes late?
19%
chance · ±0 pts
+2 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
19%
Leave 15+ late
16%
Arrive 1h+ late
7%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
2.8d
2d
1d
12h
6h
Departs
Lands
Arrive at ROC more than 15 minutes late?
Calm-weather odds: 19% · changed +2 pts in 24h
+2 pts
19%
Yes 19%
No 81%
Leave DTW more than 15 minutes late?
Calm-weather odds: 16% · changed +0 pts in 24h
+0 pts
16%
Yes 16%
No 84%
Arrive at ROC more than an hour late?
Calm-weather odds: 7% · changed +0 pts in 24h
+0 pts
7%
Yes 7%
No 93%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to ROC?
On time or early
81%
15–30 min late
9%
30 min–1 hour late
2%
1–2 hours late
5%
Over 2 hours late
3%
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 23% of the time recently
↑
ROC is prone to delays
↓
Mostly benign weather forecast at DTW
↓
Early flights usually leave on time
Weather at each end
DTW (origin)
Gusts 8 kt Ceiling 3,500 ft Visibility 8 mi Precip 0.03 in
ROC (destination)
Gusts 12 kt Ceiling 5,000 ft Visibility 4 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.