Schedule: a typical summer Tuesday (the flights of Jul 28, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
FRONTIER · FLIGHT F9 2275
SCHEDULED · TYPICAL SCHEDULE
Tuesday, September 29
F9 2275 · ONT → SEA
departs 4:09 PM PT · arrives 6:58 PM PT
Forecast issued Tue 10:00 PM ET · 3h after departure
Watch this flight
Other days
Tue 9/29
Today 35%
Sat 10/3 16%
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?
33%
chance · ±0 pts
+3 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
33%
Leave 15+ late
31%
Arrive 1h+ late
6%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
2.8d
2d
1d
12h
6h
Departs
Lands
Arrive at SEA more than 15 minutes late?
Calm-weather odds: 31% · changed +3 pts in 24h
+3 pts
33%
Yes 33%
No 67%
Leave ONT more than 15 minutes late?
Calm-weather odds: 32% · changed +3 pts in 24h
+3 pts
31%
Yes 31%
No 69%
Arrive at SEA more than an hour late?
Calm-weather odds: 6% · changed +1 pt in 24h
+1 pt
6%
Yes 6%
No 94%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to SEA?
On time or early
66%
15–30 min late
13%
30 min–1 hour late
13%
1–2 hours late
1%
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
↑
Cloud base down to 500 ft forecast at SEA that day
↑
F9's recent on-time record
↑
Arrivals into SEA at that hour are often late
↓
Tuesdays in September are usually quieter than average
↓
Other factors
Weather at each end
ONT (origin)
Gusts 19 kt Ceiling none (clear) Visibility 9 mi Precip none
SEA (destination)
Gusts 24 kt Ceiling 500 ft Visibility 3 mi Precip 0.04 in
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.