Schedule: a typical Tuesday (the flights of Jul 28, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
FRONTIER · FLIGHT F9 1357
SCHEDULED · TYPICAL SCHEDULE
Tuesday, September 29 Today
F9 1357 · LAS → ONT
departs 2:05 PM PT · arrives 3:14 PM PT
Forecast issued Tue 10:00 PM ET · 5h after departure
Watch this flight
Other days
Tue 9/29
Today 30%
Thu 10/1 33%
Fri 10/2 31%
Sat 10/3 19%
Sun 10/4 33%
Mon 10/5 33%
Odds over time
Arrive at ONT more than 15 minutes late?
50%
chance · ±0 pts
+18 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
50%
Leave 15+ late
50%
Arrive 1h+ late
23%
Cancelled
2%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
25%
50%
75%
100%
2.9d
2d
1d
12h
6h
Departs
Lands
Arrive at ONT more than 15 minutes late?
Calm-weather odds: 50% · changed +18 pts in 24h
+18 pts
50%
Yes 50%
No 50%
Leave LAS more than 15 minutes late?
Calm-weather odds: 50% · changed +24 pts in 24h
+24 pts
50%
Yes 50%
No 50%
Arrive at ONT more than an hour late?
Calm-weather odds: 23% · changed +14 pts in 24h
+14 pts
23%
Yes 23%
No 77%
Cancelled?
Calm-weather odds: 2% · changed +1 pt in 24h
+1 pt
2%
Yes 2%
No 98%
How late will it get to ONT?
On time or early
49%
15–30 min late
17%
30 min–1 hour late
10%
1–2 hours late
15%
Over 2 hours late
7%
Cancelled
2%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Gusts to 27 kt forecast at LAS that day
↑
LAS is prone to delays
↑
2pm departures from LAS are often late
↓
Tuesdays in September are usually quieter than average
↓
Mostly benign weather forecast at ONT
Weather at each end
LAS (origin)
Gusts 27 kt Ceiling 4,700 ft Visibility 7 mi Precip 0.08 in
ONT (destination)
Gusts 19 kt Ceiling none (clear) Visibility 9 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.