Schedule: a typical summer Friday (the flights of Jul 31, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
FRONTIER · FLIGHT F9 4758
SCHEDULED · TYPICAL SCHEDULE
Friday, October 2 Tomorrow
F9 4758 · ONT → LAS
departs 3:40 PM PT · arrives 4:51 PM PT
Forecast issued Thu 11:00 PM ET · 20h before departure
Watch this flight
Other days
Today
Sat 10/3 24%
Sun 10/4 27%
Mon 10/5 24%
Tue 10/6 17%
Wed 10/7 16%
Thu 10/8 28%
Odds over time
Arrive at LAS more than 15 minutes late?
27%
chance · ±4 pts
−1 pt · 24h
HOW SURE WE ARE
Good. The odds now lean mostly on firmed-up weather forecasts.
Arrive 15+ late
27%
Leave 15+ late
28%
Arrive 1h+ late
10%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
3.9d
2d
1d
Now
12h
6h
Departs
Lands
Arrive at LAS more than 15 minutes late?
Calm-weather odds: 22% · changed −1 pt in 24h
−1 pt
27%
Yes 27%
No 73%
Leave ONT more than 15 minutes late?
Calm-weather odds: 22% · changed −2 pts in 24h
−2 pts
28%
Yes 28%
No 72%
Arrive at LAS more than an hour late?
Calm-weather odds: 6% · changed +1 pt in 24h
+1 pt
10%
Yes 10%
No 90%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to LAS?
On time or early
72%
15–30 min late
7%
30 min–1 hour late
10%
1–2 hours late
4%
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
↑
LAS is prone to delays
↑
F9's recent on-time record
↑
Later flights pick up delays from earlier in the day
↓
Mostly benign weather forecast at LAS
Weather at each end
ONT (origin)
Gusts 15 kt Ceiling none (clear) Visibility 10+ mi Precip none
LAS (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.