Schedule: a typical Saturday (the flights of Jul 25, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
SKYWEST · FLIGHT OO 3639
SCHEDULED · TYPICAL SCHEDULE
Saturday, October 3
OO 3639 · BUF → DTW
departs 8:55 AM ET · arrives 10:10 AM ET
Forecast issued Wed 6:00 PM ET · 63h before departure
Watch this flight
Other days
Today 12%
Thu 10/1 15%
Fri 10/2 18%
Sat 10/3
Sun 10/4 11%
Mon 10/5 11%
Tue 10/6 9%
Odds over time
Arrive at DTW more than 15 minutes late?
11%
chance · ±1 pts
−1 pt · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
11%
Leave 15+ late
10%
Arrive 1h+ late
6%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
5%
10%
15%
20%
4.5d
Now
2d
1d
12h
6h
Departs
Lands
Arrive at DTW more than 15 minutes late?
Calm-weather odds: 8% · changed −1 pt in 24h
−1 pt
11%
Yes 11%
No 89%
Leave BUF more than 15 minutes late?
Calm-weather odds: 11% · changed −1 pt in 24h
−1 pt
10%
Yes 10%
No 90%
Arrive at DTW more than an hour late?
Calm-weather odds: 5% · changed +0 pts in 24h
+0 pts
6%
Yes 6%
No 94%
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
88%
15–30 min late
6%
30 min–1 hour late
0%
1–2 hours late
3%
Over 2 hours late
2%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Other factors
↑
OO's recent on-time record
↓
Mostly benign weather forecast at BUF
↓
8am departures from BUF are usually not late
Weather at each end
BUF (origin)
Gusts 8 kt Ceiling none (clear) Visibility 10+ mi Precip none
DTW (destination)
Gusts 9 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.