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.
FRONTIER · FLIGHT F9 1357
SCHEDULED · TYPICAL SCHEDULE
Wednesday, September 30 Today
F9 1357 · LAS → ONT
departs 2:05 PM PT · arrives 3:14 PM PT
Forecast issued Wed 2:00 AM ET · 15h before departure
Watch this flight
Other days
Today
Thu 10/1 33%
Fri 10/2 37%
Sat 10/3 19%
Sun 10/4 33%
Mon 10/5 33%
Tue 10/6 16%
Odds over time
Arrive at ONT more than 15 minutes late?
28%
chance · ±2 pts
+10 pts · 24h
HOW SURE WE ARE
Good. The odds now lean mostly on firmed-up weather forecasts.
Arrive 15+ late
28%
Leave 15+ late
26%
Arrive 1h+ late
9%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
2.9d
2d
1d
Now
12h
6h
Departs
Lands
Arrive at ONT more than 15 minutes late?
Calm-weather odds: 25% · changed +10 pts in 24h
+10 pts
28%
Yes 28%
No 72%
Leave LAS more than 15 minutes late?
Calm-weather odds: 24% · changed +4 pts in 24h
+4 pts
26%
Yes 26%
No 74%
Arrive at ONT more than an hour late?
Calm-weather odds: 8% · changed +2 pts in 24h
+2 pts
9%
Yes 9%
No 91%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to ONT?
On time or early
71%
15–30 min late
13%
30 min–1 hour late
6%
1–2 hours late
6%
Over 2 hours late
4%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
F9's recent on-time record
↑
LAS is prone to delays
↑
2pm departures from LAS are often late
↓
Wednesdays in September are usually quieter than average
↓
Mostly benign weather forecast at LAS
Weather at each end
LAS (origin)
Gusts 16 kt Ceiling none (clear) Visibility 10+ mi Precip none
ONT (destination)
Gusts 17 kt Ceiling none (clear) Visibility 8 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.