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 4138
SCHEDULED · TYPICAL SCHEDULE
Saturday, October 3
OO 4138 · FAT → SLC
departs 6:00 AM PT · arrives 8:41 AM MT
Forecast issued Wed 7:00 PM ET · 62h before departure
Watch this flight
Other days
Today 4%
Thu 10/1 4%
Fri 10/2 5%
Sat 10/3
Sun 10/4 6%
Mon 10/5 3%
Tue 10/6 3%
Odds over time
Arrive at SLC more than 15 minutes late?
6%
chance · ±1 pts
+1 pt · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
6%
Leave 15+ late
8%
Arrive 1h+ late
4%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
3%
6%
9%
12%
4.5d
Now
2d
1d
12h
6h
Departs
Lands
Arrive at SLC more than 15 minutes late?
Calm-weather odds: 5% · changed +1 pt in 24h
+1 pt
6%
Yes 6%
No 94%
Leave FAT more than 15 minutes late?
Calm-weather odds: 8% · changed +0 pts in 24h
+0 pts
8%
Yes 8%
No 92%
Arrive at SLC more than an hour late?
Calm-weather odds: 4% · changed +0 pts in 24h
+0 pts
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 SLC?
On time or early
94%
15–30 min late
<1%
30 min–1 hour late
<1%
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
↑
FAT is prone to delays
↑
Saturdays in October are usually busier than average
↑
Other factors
↓
This flight has been late 5% of the time recently
↓
Early flights usually leave on time
Weather at each end
FAT (origin)
Gusts 7 kt Ceiling none (clear) Visibility 10+ mi Precip none
SLC (destination)
Gusts 10 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.