Schedule: a typical summer Friday (the flights of Jul 31, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SKYWEST · FLIGHT OO 3966
SCHEDULED · TYPICAL SCHEDULE
Friday, October 2
OO 3966 · SNA → SEA
departs 11:25 AM PT · arrives 2:25 PM PT
Forecast issued Fri 10:00 PM ET · 8h after departure
Watch this flight
Other days
Fri 10/2
Today 30%
Mon 10/5 23%
Fri 10/9 28%
Odds over time
Arrive at SEA more than 15 minutes late?
31%
chance · ±0 pts
+4 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
31%
Leave 15+ late
25%
Arrive 1h+ late
9%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
3.7d
2d
1d
12h
6h
Departs
Lands
Arrive at SEA more than 15 minutes late?
Calm-weather odds: 31% · changed +4 pts in 24h
+4 pts
31%
Yes 31%
No 69%
Leave SNA more than 15 minutes late?
Calm-weather odds: 25% · changed −4 pts in 24h
−4 pts
25%
Yes 25%
No 75%
Arrive at SEA more than an hour late?
Calm-weather odds: 9% · changed −3 pts in 24h
−3 pts
9%
Yes 9%
No 91%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to SEA?
On time or early
68%
15–30 min late
10%
30 min–1 hour late
12%
1–2 hours late
6%
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
↑
SNA is prone to delays
↑
This flight has been late 25% of the time recently
↑
11am departures from SNA are often late
↓
Mostly benign weather forecast at SEA
↓
Other factors
Weather at each end
SNA (origin)
Gusts 10 kt Ceiling 300 ft Visibility 5 mi Precip none
SEA (destination)
Gusts 10 kt Ceiling 1,500 ft 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.