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 4127
SCHEDULED · TYPICAL SCHEDULE
Saturday, October 3
OO 4127 · SEA → BOI
departs 2:50 PM PT · arrives 5:24 PM MT
Forecast issued Wed 8:00 PM ET · 70h before departure
Watch this flight
Other days
Today 16%
Thu 10/1 16%
Fri 10/2 15%
Sat 10/3
Sun 10/4 16%
Mon 10/5 13%
Tue 10/6 11%
Odds over time
Arrive at BOI more than 15 minutes late?
15%
chance · ±2 pts
+1 pt · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
15%
Leave 15+ late
13%
Arrive 1h+ late
4%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
5%
10%
15%
20%
4.8d
Now
2d
1d
12h
6h
Departs
Lands
Arrive at BOI more than 15 minutes late?
Calm-weather odds: 9% · changed +1 pt in 24h
+1 pt
15%
Yes 15%
No 85%
Leave SEA more than 15 minutes late?
Calm-weather odds: 11% · changed −2 pts in 24h
−2 pts
13%
Yes 13%
No 87%
Arrive at BOI more than an hour late?
Calm-weather odds: 3% · changed −1 pt in 24h
−1 pt
4%
Yes 4%
No 96%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 100%
How late will it get to BOI?
On time or early
84%
15–30 min late
6%
30 min–1 hour late
5%
1–2 hours late
2%
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
↑
SEA is busy at that time
↑
Later flights pick up delays from earlier in the day
↑
2pm departures from SEA are often late
↓
OO's recent on-time record
↓
This flight has been late 12% of the time recently
Weather at each end
SEA (origin)
Gusts 12 kt Ceiling 300 ft Visibility 4 mi Precip none
BOI (destination)
Gusts 9 kt Ceiling none (clear) 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.