Schedule: the flights that flew on Wednesday, Oct 21, re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
FRONTIER · FLIGHT F9 1283
SCHEDULED · TYPICAL SCHEDULE
Wednesday, October 28 Tomorrow
F9 1283 · LAS → ONT
departs 9:20 AM PT · arrives 10:40 AM PT
Forecast issued Tue 2:00 AM ET · 34h before departure
Watch this flight
Other days
Today 17%
Wed 10/28
Thu 10/29 18%
Fri 10/30 18%
Sat 10/31 9%
Sun 11/1 19%
Mon 11/2 20%
Odds over time
Arrive at ONT more than 15 minutes late?
8%
chance · ±1 pts
+0 pts · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
8%
Leave 15+ late
11%
Arrive 1h+ late
4%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
5%
10%
15%
20%
6.5d
2d
Now
1d
12h
6h
Departs
Lands
Arrive at ONT more than 15 minutes late?
Calm-weather odds: 8% · changed +0 pts in 24h
+0 pts
8%
Yes 8%
No 92%
Leave LAS more than 15 minutes late?
Calm-weather odds: 10% · changed +0 pts in 24h
+0 pts
11%
Yes 11%
No 89%
Arrive at ONT more than an hour late?
Calm-weather odds: 4% · changed +0 pts in 24h
+0 pts
4%
Yes 4%
No 96%
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
91%
15–30 min late
<1%
30 min–1 hour late
4%
1–2 hours late
2%
Over 2 hours late
2%
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
↓
Mostly benign weather forecast at LAS
↓
Wednesdays in October are usually quieter than average
Weather at each end
LAS (origin)
Gusts 11 kt Ceiling none (clear) Visibility 10+ mi Precip none
ONT (destination)
Gusts 11 kt Ceiling 4,500 ft Visibility 7 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.