Schedule: the flights that flew on Monday, Oct 5, re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
FRONTIER · FLIGHT F9 4639
SCHEDULED · TYPICAL SCHEDULE
Monday, October 12 Today
F9 4639 · CLE → DEN
departs 1:23 PM ET · arrives 2:46 PM MT
Forecast issued Mon 3:00 PM ET · 2h after departure
Watch this flight
Other days
Today
Thu 10/15 35%
Sun 10/18 35%
Odds over time
Arrive at DEN more than 15 minutes late?
22%
chance · ±1 pts
+5 pts · 24h
HOW SURE WE ARE
Very high. The odds now come almost entirely from live conditions.
Arrive 15+ late
22%
Leave 15+ late
22%
Arrive 1h+ late
10%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
6.6d
2d
1d
12h
6h
Departs
Now
Lands
Arrive at DEN more than 15 minutes late?
Calm-weather odds: 20% · changed +5 pts in 24h
+5 pts
22%
Yes 22%
No 78%
Leave CLE more than 15 minutes late?
Calm-weather odds: 22% · changed +4 pts in 24h
+4 pts
22%
Yes 22%
No 78%
Arrive at DEN more than an hour late?
Calm-weather odds: 10% · changed +2 pts in 24h
+2 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
78%
15–30 min late
5%
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
↑
F9's recent on-time record
↑
DEN is busy at that time
↑
Gusts to 32 kt forecast at DEN that day
↓
Other factors
↓
CLE usually runs smoothly
Weather at each end
CLE (origin)
Gusts 17 kt Ceiling 400 ft Visibility 2.5 mi Precip 0.06 in
DEN (destination)
Gusts 32 kt Ceiling none (clear) 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.