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 4456
SCHEDULED · TYPICAL SCHEDULE
Thursday, October 1
OO 4456 · DTW → ORD
departs 7:30 AM ET · arrives 7:59 AM CT
Forecast issued Tue 8:00 PM ET · 36h before departure
Watch this flight
Other days
Today 25%
Wed 9/30 28%
Thu 10/1
Fri 10/2 17%
Sun 10/4 20%
Mon 10/5 20%
Odds over time
Arrive at ORD more than 15 minutes late?
22%
chance · ±1 pts
−2 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
22%
Leave 15+ late
10%
Arrive 1h+ late
8%
Cancelled
2%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
2.9d
2d
Now
1d
12h
6h
Departs
Lands
Arrive at ORD more than 15 minutes late?
Calm-weather odds: 11% · changed −2 pts in 24h
−2 pts
22%
Yes 22%
No 78%
Leave DTW more than 15 minutes late?
Calm-weather odds: 8% · changed +0 pts in 24h
+0 pts
10%
Yes 10%
No 90%
Arrive at ORD more than an hour late?
Calm-weather odds: 4% · changed +0 pts in 24h
+0 pts
8%
Yes 8%
No 92%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
2%
Yes 2%
No 98%
How late will it get to ORD?
On time or early
76%
15–30 min late
6%
30 min–1 hour late
8%
1–2 hours late
3%
Over 2 hours late
4%
Cancelled
2%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Cloud base down to 300 ft, visibility down to 2 mi, 1.1 in of rain forecast at ORD that day
↑
Arrivals into ORD at that hour are often late
↑
ORD is busy at that time
↓
Early flights usually leave on time
↓
DTW usually runs smoothly
Weather at each end
DTW (origin)
Gusts 15 kt Ceiling 4,333 ft Visibility 7 mi Precip 0.14 in
ORD (destination)
Gusts 10 kt Ceiling 300 ft Visibility 2 mi Precip 1.11 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.