Schedule: a typical summer Sunday (the flights of Jul 26, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SKYWEST · FLIGHT OO 4921
SCHEDULED · TYPICAL SCHEDULE
Sunday, October 4
OO 4921 · PHX → SLC
departs 8:20 PM MT · arrives 11:03 PM MT
Forecast issued Sat 1:00 AM ET · 46h before departure
Watch this flight
Other days
Today 22%
Sun 10/4
Mon 10/5 16%
Fri 10/9 20%
Odds over time
Arrive at SLC more than 15 minutes late?
20%
chance · ±4 pts
+0 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
20%
Leave 15+ late
19%
Arrive 1h+ late
7%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
6.1d
Now
1d
12h
6h
Departs
Lands
Arrive at SLC more than 15 minutes late?
Calm-weather odds: 16% · changed +0 pts in 24h
+0 pts
20%
Yes 20%
No 80%
Leave PHX more than 15 minutes late?
Calm-weather odds: 17% · changed +0 pts in 24h
+0 pts
19%
Yes 19%
No 81%
Arrive at SLC more than an hour late?
Calm-weather odds: 6% · changed +0 pts in 24h
+0 pts
7%
Yes 7%
No 93%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to SLC?
On time or early
79%
15–30 min late
4%
30 min–1 hour late
9%
1–2 hours late
5%
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
↑
8pm departures from PHX are often late
↑
Later flights pick up delays from earlier in the day
↑
Arrivals into SLC at that hour are often late
↓
OO's recent on-time record
↓
Mostly benign weather forecast at SLC
Weather at each end
PHX (origin)
Gusts 27 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.