Schedule: a typical summer Wednesday (the flights of Jul 29, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
SKYWEST · FLIGHT OO 5423
SCHEDULED · TYPICAL SCHEDULE
Wednesday, September 30
OO 5423 · SUN → SFO
departs 7:40 AM MT · arrives 8:59 AM PT
Forecast issued Wed 10:00 PM ET · 12h after departure
Watch this flight
Other days
Wed 9/30
Today 15%
Mon 10/5 15%
Fri 10/9 26%
Odds over time
Arrive at SFO more than 15 minutes late?
15%
chance · ±0 pts
−13 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
15%
Leave 15+ late
13%
Arrive 1h+ late
7%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
2.8d
2d
1d
12h
6h
Departs
Lands
Arrive at SFO more than 15 minutes late?
Calm-weather odds: 15% · changed −13 pts in 24h
−13 pts
15%
Yes 15%
No 85%
Leave SUN more than 15 minutes late?
Calm-weather odds: 13% · changed −12 pts in 24h
−12 pts
13%
Yes 13%
No 87%
Arrive at SFO more than an hour late?
Calm-weather odds: 7% · changed −8 pts in 24h
−8 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 SFO?
On time or early
84%
15–30 min late
4%
30 min–1 hour late
4%
1–2 hours late
2%
Over 2 hours late
5%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
This flight has been late 45% of the time recently
↑
OO's recent on-time record
↑
SFO is prone to delays
↓
Mostly benign weather forecast at SFO
↓
7am departures from SUN are usually not late
Weather at each end
SUN (origin)
Gusts 11 kt Ceiling none (clear) Visibility 10+ mi Precip none
SFO (destination)
Gusts 22 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.