Schedule: the flights that flew on Friday, Oct 23, re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
FRONTIER · FLIGHT F9 1261
SCHEDULED · TYPICAL SCHEDULE
Friday, October 30
F9 1261 · DEN → ONT
departs 10:29 PM MT · arrives 11:50 PM PT
Forecast issued Wed 7:00 AM ET · 66h before departure
Watch this flight
Other days
Today 19%
Thu 10/29 30%
Fri 10/30
Sat 10/31 19%
Sun 11/1 27%
Mon 11/2 26%
Tue 11/3 27%
Odds over time
Arrive at ONT more than 15 minutes late?
25%
chance · ±5 pts
– · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
25%
Leave 15+ late
31%
Arrive 1h+ late
6%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
7.0d
Now
2d
1d
12h
6h
Departs
Lands
Arrive at ONT more than 15 minutes late?
Calm-weather odds: 25% · changed – in 24h
–
25%
Yes 25%
No 75%
Leave DEN more than 15 minutes late?
Calm-weather odds: 28% · changed – in 24h
–
31%
Yes 31%
No 69%
Arrive at ONT more than an hour late?
Calm-weather odds: 6% · changed – in 24h
–
6%
Yes 6%
No 94%
Cancelled?
Calm-weather odds: <1% · changed – in 24h
–
<1%
Yes <1%
No 99%
How late will it get to ONT?
On time or early
75%
15–30 min late
12%
30 min–1 hour late
6%
1–2 hours late
4%
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
No breakdown for this forecast yet.
Weather at each end
DEN (origin)
Gusts 15 kt Ceiling none (clear) Visibility 10+ mi Precip none
ONT (destination)
Gusts 14 kt Ceiling 3,800 ft 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.