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 3639
SCHEDULED · TYPICAL SCHEDULE
Sunday, October 4 Today
OO 3639 · DTW → BUF
departs 7:00 AM ET · arrives 8:14 AM ET
Forecast issued Sun 3:00 AM ET · 4h before departure
Watch this flight
Other days
Today
Mon 10/5 7%
Fri 10/9 9%
Odds over time
Arrive at BUF more than 15 minutes late?
9%
chance · ±0 pts
+2 pts · 24h
HOW SURE WE ARE
High. The odds now come mostly from live FAA and airport data.
Arrive 15+ late
9%
Leave 15+ late
9%
Arrive 1h+ late
4%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
5%
10%
15%
20%
5.4d
2d
1d
12h
6h
Now
Departs
Lands
Arrive at BUF more than 15 minutes late?
Calm-weather odds: 10% · changed +2 pts in 24h
+2 pts
9%
Yes 9%
No 91%
Leave DTW more than 15 minutes late?
Calm-weather odds: 11% · changed +1 pt in 24h
+1 pt
9%
Yes 9%
No 91%
Arrive at BUF more than an hour late?
Calm-weather odds: 5% · changed +0 pts in 24h
+0 pts
4%
Yes 4%
No 96%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 100%
How late will it get to BUF?
On time or early
91%
15–30 min late
1%
30 min–1 hour late
4%
1–2 hours late
2%
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
↑
OO's recent on-time record
↑
Other factors
↓
Early flights usually leave on time
↓
Mostly benign weather forecast at DTW
Weather at each end
DTW (origin)
Gusts 18 kt Ceiling none (clear) Visibility 9 mi Precip none
BUF (destination)
Gusts 17 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.