Schedule: a typical Saturday (the flights of Jul 25, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
SKYWEST · FLIGHT OO 3953
SCHEDULED · TYPICAL SCHEDULE
Saturday, October 3
OO 3953 · SEA → PDX
departs 7:30 AM PT · arrives 8:40 AM PT
Forecast issued Wed 6:00 PM ET · 64h before departure
Watch this flight
Other days
Today 11%
Thu 10/1 10%
Fri 10/2 13%
Sat 10/3
Sun 10/4 14%
Mon 10/5 13%
Tue 10/6 13%
Odds over time
Arrive at PDX more than 15 minutes late?
13%
chance · ±2 pts
−5 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
13%
Leave 15+ late
10%
Arrive 1h+ late
4%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
4.5d
Now
2d
1d
12h
6h
Departs
Lands
Arrive at PDX more than 15 minutes late?
Calm-weather odds: 9% · changed −5 pts in 24h
−5 pts
13%
Yes 13%
No 87%
Leave SEA more than 15 minutes late?
Calm-weather odds: 9% · changed −2 pts in 24h
−2 pts
10%
Yes 10%
No 90%
Arrive at PDX more than an hour late?
Calm-weather odds: 3% · changed −2 pts in 24h
−2 pts
4%
Yes 4%
No 96%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to PDX?
On time or early
86%
15–30 min late
9%
30 min–1 hour late
<1%
1–2 hours late
2%
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
↑
SEA is prone to delays
↑
OO's recent on-time record
↑
SEA is busy at that time
↓
Arrivals into PDX at that hour are usually not late
↓
Early flights usually leave on time
Weather at each end
SEA (origin)
Gusts 12 kt Ceiling 800 ft Visibility 4 mi Precip none
PDX (destination)
Gusts 10 kt Ceiling 1,600 ft Visibility 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.