Schedule: a typical Thursday (the flights of Jul 30, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
FRONTIER · FLIGHT F9 1357
SCHEDULED · TYPICAL SCHEDULE
Thursday, October 1 Tomorrow
F9 1357 · LAS → ONT
departs 2:45 PM PT · arrives 3:54 PM PT
Forecast issued Wed 7:00 AM ET · 35h before departure
Watch this flight
Other days
Today 29%
Thu 10/1
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?
35%
chance · ±4 pts
+2 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
35%
Leave 15+ late
28%
Arrive 1h+ late
12%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
2.9d
2d
Now
1d
12h
6h
Departs
Lands
Arrive at ONT more than 15 minutes late?
Calm-weather odds: 30% · changed +2 pts in 24h
+2 pts
35%
Yes 35%
No 65%
Leave LAS more than 15 minutes late?
Calm-weather odds: 27% · changed +0 pts in 24h
+0 pts
28%
Yes 28%
No 72%
Arrive at ONT more than an hour late?
Calm-weather odds: 10% · changed −1 pt in 24h
−1 pt
12%
Yes 12%
No 88%
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
64%
15–30 min late
15%
30 min–1 hour late
8%
1–2 hours late
7%
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
↑
F9's recent on-time record
↑
2pm departures from LAS are often late
↑
LAS is prone to delays
↓
Mostly benign weather forecast at LAS
↓
Mostly benign weather forecast at ONT
Weather at each end
LAS (origin)
Gusts 9 kt Ceiling none (clear) Visibility 10+ mi Precip none
ONT (destination)
Gusts 16 kt Ceiling none (clear) Visibility 5 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.