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 3923
SCHEDULED · TYPICAL SCHEDULE
Wednesday, September 30 Today
OO 3923 · PDX → SEA
departs 8:44 PM PT · arrives 9:56 PM PT
Forecast issued Wed 8:00 PM ET · 4h before departure
Watch this flight
Other days
Today
Thu 10/1 22%
Fri 10/2 19%
Sun 10/4 22%
Mon 10/5 16%
Tue 10/6 14%
Odds over time
Arrive at SEA more than 15 minutes late?
35%
chance · ±0 pts
+13 pts · 24h
HOW SURE WE ARE
High. The odds now come mostly from live FAA and airport data.
Arrive 15+ late
35%
Leave 15+ late
53%
Arrive 1h+ late
11%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
2.9d
2d
1d
12h
6h
Now
Departs
Lands
Arrive at SEA more than 15 minutes late?
Calm-weather odds: 27% · changed +13 pts in 24h
+13 pts
35%
Yes 35%
No 65%
Leave PDX more than 15 minutes late?
Calm-weather odds: 28% · changed +29 pts in 24h
+29 pts
53%
Yes 53%
No 47%
Arrive at SEA more than an hour late?
Calm-weather odds: 5% · changed +7 pts in 24h
+7 pts
11%
Yes 11%
No 89%
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
65%
15–30 min late
17%
30 min–1 hour late
6%
1–2 hours late
10%
Over 2 hours late
1%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Arrivals into SEA at that hour are often late
↑
OO's recent on-time record
↑
SEA is prone to delays
↓
Mostly benign weather forecast at PDX
↓
Wednesdays in September are usually quieter than average
Weather at each end
PDX (origin)
Gusts 9 kt Ceiling 1,800 ft Visibility 10+ mi Precip none
SEA (destination)
Gusts 9 kt Ceiling 1,300 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.