Schedule: a typical Tuesday (the flights of Jul 28, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
SKYWEST · FLIGHT OO 4456
SCHEDULED · TYPICAL SCHEDULE
Tuesday, September 29
OO 4456 · ORD → DTW
departs 8:52 AM CT · arrives 11:23 AM ET
Forecast issued Tue 10:00 PM ET · 12h after departure
Watch this flight
Other days
Tue 9/29
Today 35%
Fri 10/2 19%
Sun 10/4 18%
Mon 10/5 20%
Tue 10/6 14%
Wed 10/7 22%
Odds over time
Arrive at DTW more than 15 minutes late?
20%
chance · ±0 pts
+0 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
20%
Leave 15+ late
18%
Arrive 1h+ late
9%
Cancelled
2%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
2.8d
2d
1d
12h
6h
Departs
Lands
Arrive at DTW more than 15 minutes late?
Calm-weather odds: 21% · changed +0 pts in 24h
+0 pts
20%
Yes 20%
No 80%
Leave ORD more than 15 minutes late?
Calm-weather odds: 19% · changed +0 pts in 24h
+0 pts
18%
Yes 18%
No 82%
Arrive at DTW more than an hour late?
Calm-weather odds: 9% · changed +2 pts in 24h
+2 pts
9%
Yes 9%
No 91%
Cancelled?
Calm-weather odds: 1% · changed +0 pts in 24h
+0 pts
2%
Yes 2%
No 98%
How late will it get to DTW?
On time or early
78%
15–30 min late
8%
30 min–1 hour late
3%
1–2 hours late
6%
Over 2 hours late
3%
Cancelled
2%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
8am departures from ORD are often late
↑
This flight has been late 23% of the time recently
↑
Cloud base down to 100 ft, visibility down to 0.5 mi forecast at ORD that day
↓
Mostly benign weather forecast at DTW
↓
Tuesdays in September are usually quieter than average
Weather at each end
ORD (origin)
Gusts 16 kt Ceiling 100 ft Visibility 0.5 mi Precip none
DTW (destination)
Gusts 9 kt Ceiling none (clear) Visibility 9 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.