Schedule: a typical Saturday (the flights of Jul 25, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
FRONTIER · FLIGHT F9 2275
SCHEDULED · TYPICAL SCHEDULE
Saturday, October 3
F9 2275 · ONT → SEA
departs 4:09 PM PT · arrives 6:58 PM PT
Forecast issued Thu 5:00 PM ET · 50h before departure
Watch this flight
Other days
Today 29%
Fri 10/2 20%
Sat 10/3
Sun 10/4 22%
Mon 10/5 20%
Tue 10/6 15%
Wed 10/7 13%
Odds over time
Arrive at SEA more than 15 minutes late?
16%
chance · ±2 pts
– · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
16%
Leave 15+ late
22%
Arrive 1h+ late
7%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
4.9d
Now
1d
12h
6h
Departs
Lands
Arrive at SEA more than 15 minutes late?
Calm-weather odds: 11% · changed – in 24h
–
16%
Yes 16%
No 84%
Leave ONT more than 15 minutes late?
Calm-weather odds: 18% · changed – in 24h
–
22%
Yes 22%
No 78%
Arrive at SEA more than an hour late?
Calm-weather odds: 5% · changed – in 24h
–
7%
Yes 7%
No 93%
Cancelled?
Calm-weather odds: <1% · changed – in 24h
–
<1%
Yes <1%
No 99%
How late will it get to SEA?
On time or early
84%
15–30 min late
5%
30 min–1 hour late
4%
1–2 hours late
3%
Over 2 hours late
4%
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
↑
Later flights pick up delays from earlier in the day
↑
Arrivals into SEA at that hour are often late
↓
Saturdays in October are usually quieter than average
↓
Cloud base down to 200 ft forecast at SEA that day
Weather at each end
ONT (origin)
Gusts 14 kt Ceiling none (clear) Visibility 10+ mi Precip none
SEA (destination)
Gusts 12 kt Ceiling 200 ft 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.