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 4120
SCHEDULED · TYPICAL SCHEDULE
Thursday, October 1 Tomorrow
OO 4120 · ROC → DTW
departs 12:33 PM ET · arrives 1:55 PM ET
Forecast issued Wed 4:00 AM ET · 32h before departure
Watch this flight
Other days
Today 17%
Thu 10/1
Fri 10/2 19%
Sun 10/4 13%
Mon 10/5 13%
Tue 10/6 10%
Odds over time
Arrive at DTW more than 15 minutes late?
17%
chance · ±2 pts
+3 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
17%
Leave 15+ late
17%
Arrive 1h+ late
8%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
2.9d
2d
Now
1d
12h
6h
Departs
Lands
Arrive at DTW more than 15 minutes late?
Calm-weather odds: 8% · changed +3 pts in 24h
+3 pts
17%
Yes 17%
No 83%
Leave ROC more than 15 minutes late?
Calm-weather odds: 11% · changed +1 pt in 24h
+1 pt
17%
Yes 17%
No 83%
Arrive at DTW more than an hour late?
Calm-weather odds: 5% · changed −1 pt in 24h
−1 pt
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
6%
30 min–1 hour late
3%
1–2 hours late
3%
Over 2 hours late
5%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Cloud base down to 1,200 ft forecast at DTW that day
↑
This flight has been late 21% of the time recently
↑
Mostly benign weather forecast at ROC
↓
DTW usually runs smoothly
↓
Arrivals into DTW at that hour are usually not late
Weather at each end
ROC (origin)
Gusts 18 kt Ceiling 3,500 ft Visibility 7 mi Precip 0.11 in
DTW (destination)
Gusts 17 kt Ceiling 1,200 ft Visibility 3 mi Precip 0.16 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.