Schedule: a typical summer Sunday (the flights of Jul 26, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SKYWEST · FLIGHT OO 3900
SCHEDULED · TYPICAL SCHEDULE
Sunday, October 4
OO 3900 · DTW → SBN
departs 7:45 PM ET · arrives 8:49 PM ET
Forecast issued Fri 12:00 AM ET · 68h before departure
Watch this flight
Other days
Today 20%
Sat 10/3 13%
Sun 10/4
Mon 10/5 18%
Tue 10/6 13%
Wed 10/7 13%
Thu 10/8 16%
Odds over time
Arrive at SBN more than 15 minutes late?
18%
chance · ±1 pts
– · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
18%
Leave 15+ late
19%
Arrive 1h+ late
8%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
5.9d
Now
2d
1d
12h
6h
Departs
Lands
Arrive at SBN more than 15 minutes late?
Calm-weather odds: 15% · changed – in 24h
–
18%
Yes 18%
No 82%
Leave DTW more than 15 minutes late?
Calm-weather odds: 17% · changed – in 24h
–
19%
Yes 19%
No 81%
Arrive at SBN more than an hour late?
Calm-weather odds: 6% · changed – in 24h
–
8%
Yes 8%
No 92%
Cancelled?
Calm-weather odds: <1% · changed – in 24h
–
<1%
Yes <1%
No 99%
How late will it get to SBN?
On time or early
82%
15–30 min late
4%
30 min–1 hour late
6%
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
↑
This flight has been late 35% of the time recently
↑
Later flights pick up delays from earlier in the day
↑
7pm departures from DTW are often late
↓
Mostly benign weather forecast at DTW
↓
DTW usually runs smoothly
Weather at each end
DTW (origin)
Gusts 16 kt Ceiling none (clear) Visibility 10+ mi Precip none
SBN (destination)
Gusts 16 kt Ceiling none (clear) Visibility 10+ 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.