Schedule: a typical Tuesday (the flights of Jul 28, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
FRONTIER · FLIGHT F9 4385
SCHEDULED · TYPICAL SCHEDULE
Tuesday, September 29 Yesterday
F9 4385 · CID → DEN
departs 3:01 PM CT · arrives 4:18 PM MT
Forecast issued Tue 10:00 PM ET · 6h after departure
Watch this flight
Other days
Tue 9/29
Thu 10/1 31%
Sun 10/4 22%
Tue 10/6 15%
Odds over time
Arrive at DEN more than 15 minutes late?
23%
chance · ±0 pts
+4 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
23%
Leave 15+ late
27%
Arrive 1h+ late
10%
Cancelled
<1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
2.8d
2d
1d
12h
6h
Departs
Lands
Arrive at DEN more than 15 minutes late?
Calm-weather odds: 19% · changed +4 pts in 24h
+4 pts
23%
Yes 23%
No 77%
Leave CID more than 15 minutes late?
Calm-weather odds: 24% · changed +8 pts in 24h
+8 pts
27%
Yes 27%
No 73%
Arrive at DEN more than an hour late?
Calm-weather odds: 10% · changed +0 pts in 24h
+0 pts
10%
Yes 10%
No 90%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
<1%
Yes <1%
No 99%
How late will it get to DEN?
On time or early
76%
15–30 min late
6%
30 min–1 hour late
7%
1–2 hours late
7%
Over 2 hours late
3%
Cancelled
<1%
Gate arrival compared with the scheduled arrival. The ranges add up to 100%.
What’s moving the odds
↑
Arrivals into DEN at that hour are often late
↑
F9's recent on-time record
↑
DEN is busy at that time
↓
Tuesdays in September are usually quieter than average
↓
CID usually runs smoothly
Weather at each end
CID (origin)
Gusts 11 kt Ceiling 6,500 ft Visibility 7 mi Precip 0.11 in
DEN (destination)
Gusts 9 kt Ceiling 6,000 ft Visibility 10+ 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.