Schedule: a typical summer Sunday (the flights of Jul 26, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
FRONTIER · FLIGHT F9 4690
SCHEDULED · TYPICAL SCHEDULE
Sunday, October 4
F9 4690 · ONT → DFW
departs 8:17 AM PT · arrives 1:31 PM CT
Forecast issued Fri 3:00 PM ET · 44h before departure
Watch this flight
Other days
Today 30%
Sat 10/3 34%
Sun 10/4
Mon 10/5 20%
Tue 10/6 11%
Odds over time
Arrive at DFW more than 15 minutes late?
22%
chance · ±2 pts
−1 pt · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
22%
Leave 15+ late
20%
Arrive 1h+ late
6%
Cancelled
2%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
10%
20%
30%
40%
5.6d
Now
1d
12h
6h
Departs
Lands
Arrive at DFW more than 15 minutes late?
Calm-weather odds: 13% · changed −1 pt in 24h
−1 pt
22%
Yes 22%
No 78%
Leave ONT more than 15 minutes late?
Calm-weather odds: 12% · changed −3 pts in 24h
−3 pts
20%
Yes 20%
No 80%
Arrive at DFW more than an hour late?
Calm-weather odds: 5% · changed −3 pts in 24h
−3 pts
6%
Yes 6%
No 94%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
2%
Yes 2%
No 98%
How late will it get to DFW?
On time or early
77%
15–30 min late
11%
30 min–1 hour late
5%
1–2 hours late
2%
Over 2 hours late
4%
Cancelled
2%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
F9's recent on-time record
↑
Cloud base down to 1,033 ft forecast at DFW that day
↑
Arrivals into DFW at that hour are often late
↓
Early flights usually leave on time
↓
Sundays in October are usually quieter than average
Weather at each end
ONT (origin)
Gusts 17 kt Ceiling none (clear) Visibility 10+ mi Precip none
DFW (destination)
Gusts 20 kt Ceiling 867 ft Visibility 7 mi Precip 0.03 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.