Schedule: a typical Wednesday (the flights of Jul 29, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
SKYWEST · FLIGHT OO 3639
SCHEDULED · TYPICAL SCHEDULE
Wednesday, September 30 Tomorrow
OO 3639 · BUF → DTW
departs 8:55 AM ET · arrives 10:10 AM ET
Forecast issued Tue 8:00 PM ET · 13h before departure
Watch this flight
Other days
Today 10%
Wed 9/30
Thu 10/1 12%
Fri 10/2 10%
Sat 10/3 12%
Sun 10/4 11%
Mon 10/5 11%
Odds over time
Arrive at DTW more than 15 minutes late?
10%
chance · ±1 pts
+4 pts · 24h
HOW SURE WE ARE
Good. The odds now lean mostly on firmed-up weather forecasts.
Arrive 15+ late
10%
Leave 15+ late
10%
Arrive 1h+ late
5%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
5%
10%
15%
20%
2.9d
2d
1d
Now
6h
Departs
Lands
Arrive at DTW more than 15 minutes late?
Calm-weather odds: 8% · changed +4 pts in 24h
+4 pts
10%
Yes 10%
No 90%
Leave BUF more than 15 minutes late?
Calm-weather odds: 9% · changed +2 pts in 24h
+2 pts
10%
Yes 10%
No 90%
Arrive at DTW more than an hour late?
Calm-weather odds: 5% · changed +1 pt in 24h
+1 pt
5%
Yes 5%
No 95%
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
90%
15–30 min late
4%
30 min–1 hour late
2%
1–2 hours late
2%
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
↑
OO's recent on-time record
↑
DTW is busy at that time
↓
Mostly benign weather forecast at BUF
↓
Arrivals into DTW at that hour are usually not late
Weather at each end
BUF (origin)
Gusts 15 kt Ceiling 8,000 ft Visibility 10+ mi Precip none
DTW (destination)
Gusts 14 kt Ceiling 3,500 ft Visibility 7 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.