Schedule: a typical summer Wednesday (the flights of Jul 29, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SKYWEST · FLIGHT OO 4456
SCHEDULED · TYPICAL SCHEDULE
Wednesday, September 30
OO 4456 · DTW → ORD
departs 7:30 AM ET · arrives 7:59 AM CT
Forecast issued Wed 10:00 PM ET · 14h after departure
Watch this flight
Other days
Wed 9/30
Today 19%
Sun 10/4 14%
Mon 10/5 20%
Tue 10/6 15%
Wed 10/7 19%
Odds over time
Arrive at ORD more than 15 minutes late?
41%
chance · ±0 pts
+13 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
41%
Leave 15+ late
15%
Arrive 1h+ late
10%
Cancelled
2%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
2.9d
2d
1d
12h
6h
Departs
Lands
Arrive at ORD more than 15 minutes late?
Calm-weather odds: 41% · changed +13 pts in 24h
+13 pts
41%
Yes 41%
No 59%
Leave DTW more than 15 minutes late?
Calm-weather odds: 15% · changed +1 pt in 24h
+1 pt
15%
Yes 15%
No 85%
Arrive at ORD more than an hour late?
Calm-weather odds: 10% · changed −2 pts in 24h
−2 pts
10%
Yes 10%
No 90%
Cancelled?
Calm-weather odds: 2% · changed +1 pt in 24h
+1 pt
2%
Yes 2%
No 98%
How late will it get to ORD?
On time or early
57%
15–30 min late
13%
30 min–1 hour late
17%
1–2 hours late
7%
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
↑
Cloud base down to 500 ft, visibility down to 1.75 mi, 0.9 in of rain forecast at ORD that day
↑
Arrivals into ORD at that hour are often late
↑
OO's recent on-time record
↓
Mostly benign weather forecast at DTW
↓
Early flights usually leave on time
Weather at each end
DTW (origin)
Gusts 8 kt Ceiling 2,800 ft Visibility 6 mi Precip 0.04 in
ORD (destination)
Gusts 19 kt Ceiling 500 ft Visibility 1.75 mi Precip 0.95 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.