Schedule: a typical summer Saturday (the flights of Jul 25, 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
Saturday, October 3 Yesterday
OO 3966 · SNA → SEA
departs 11:25 AM PT · arrives 2:25 PM PT
Forecast issued Sat 10:00 PM ET · 8h after departure
Watch this flight
Other days
Sat 10/3
Today 31%
Mon 10/5 23%
Fri 10/9 28%
Odds over time
Arrive at SEA more than 15 minutes late?
37%
chance · ±1 pts
+16 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
37%
Leave 15+ late
32%
Arrive 1h+ late
10%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
4.7d
2d
1d
12h
6h
Departs
Lands
Arrive at SEA more than 15 minutes late?
Calm-weather odds: 37% · changed +16 pts in 24h
+16 pts
37%
Yes 37%
No 63%
Leave SNA more than 15 minutes late?
Calm-weather odds: 32% · changed +12 pts in 24h
+12 pts
32%
Yes 32%
No 68%
Arrive at SEA more than an hour late?
Calm-weather odds: 10% · changed +3 pts in 24h
+3 pts
10%
Yes 10%
No 90%
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
63%
15–30 min late
14%
30 min–1 hour late
12%
1–2 hours late
6%
Over 2 hours late
4%
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
↑
SNA is prone to delays
↑
11am departures from SNA are often late
↓
Other factors
↓
Mostly benign weather forecast at SNA
Weather at each end
SNA (origin)
Gusts 11 kt Ceiling none (clear) Visibility 10+ mi Precip none
SEA (destination)
Gusts 9 kt Ceiling 100 ft Visibility 2.5 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.