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 3958
SCHEDULED · TYPICAL SCHEDULE
Wednesday, September 30 Today
OO 3958 · BOI → SEA
departs 3:29 PM MT · arrives 4:08 PM PT
Forecast issued Wed 2:00 PM ET · 4h before departure
Watch this flight
Other days
Today
Thu 10/1 22%
Fri 10/2 23%
Sat 10/3 21%
Sun 10/4 25%
Mon 10/5 23%
Tue 10/6 19%
Odds over time
Arrive at SEA more than 15 minutes late?
43%
chance · ±0 pts
+21 pts · 24h
HOW SURE WE ARE
High. The odds now come mostly from live FAA and airport data.
Arrive 15+ late
43%
Leave 15+ late
40%
Arrive 1h+ late
9%
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 +21 pts in 24h
+21 pts
43%
Yes 43%
No 57%
Leave BOI more than 15 minutes late?
Calm-weather odds: 22% · changed +22 pts in 24h
+22 pts
40%
Yes 40%
No 60%
Arrive at SEA more than an hour late?
Calm-weather odds: 5% · changed +4 pts in 24h
+4 pts
9%
Yes 9%
No 91%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 100%
How late will it get to SEA?
On time or early
57%
15–30 min late
29%
30 min–1 hour late
5%
1–2 hours late
7%
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
↑
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 BOI
↓
Wednesdays in September are usually quieter than average
Weather at each end
BOI (origin)
Gusts 16 kt Ceiling none (clear) 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.