Schedule: a typical summer Monday (the flights of Jul 27, 2026), re-dated. Real flights replace these once airlines file their FAA flight plans, usually about a day ahead.
FRONTIER · FLIGHT F9 1279
SCHEDULED · TYPICAL SCHEDULE
Monday, October 5
F9 1279 · MIA → DEN
departs 6:00 AM ET · arrives 8:23 AM MT
Forecast issued Sat 12:00 AM ET · 54h before departure
Watch this flight
Other days
Today 19%
Sun 10/4 14%
Mon 10/5
Tue 10/6 10%
Wed 10/7 10%
Thu 10/8 13%
Fri 10/9 14%
Odds over time
Arrive at DEN more than 15 minutes late?
13%
chance · ±1 pts
– · 24h
HOW SURE WE ARE
Moderate. The odds now blend history with early weather forecasts.
Arrive 15+ late
13%
Leave 15+ late
12%
Arrive 1h+ late
4%
Cancelled
<1%
MOSTLY HISTORY
WEATHER FORECASTS
LIVE
IN THE AIR
0%
5%
10%
15%
20%
6.2d
Now
1d
12h
6h
Departs
Lands
Arrive at DEN more than 15 minutes late?
Calm-weather odds: 14% · changed – in 24h
–
13%
Yes 13%
No 87%
Leave MIA more than 15 minutes late?
Calm-weather odds: 12% · changed – in 24h
–
12%
Yes 12%
No 88%
Arrive at DEN more than an hour late?
Calm-weather odds: 4% · changed – in 24h
–
4%
Yes 4%
No 96%
Cancelled?
Calm-weather odds: <1% · changed – in 24h
–
<1%
Yes <1%
No 99%
How late will it get to DEN?
On time or early
86%
15–30 min late
5%
30 min–1 hour late
5%
1–2 hours late
1%
Over 2 hours late
2%
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
↑
MIA is prone to delays
↓
Early flights usually leave on time
↓
6am departures from MIA are usually not late
Weather at each end
MIA (origin)
Gusts 14 kt Ceiling none (clear) Visibility 10+ mi Precip 0.05 in
DEN (destination)
Gusts 17 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.