Schedule: a typical Thursday (the flights of Jul 30, 2026, re-dated). Real flights replace these once the FAA publishes them, usually about a day ahead.
FRONTIER · FLIGHT F9 1280
SCHEDULED · TYPICAL SCHEDULE
Thursday, October 1 Today
F9 1280 · DEN → MIA
departs 11:40 PM MT · arrives 5:51 AM ET
Forecast issued Thu 5:00 AM ET · 21h before departure
Watch this flight
Other days
Today
Fri 10/2 25%
Sun 10/4 24%
Mon 10/5 22%
Tue 10/6 18%
Wed 10/7 17%
Odds over time
Arrive at MIA more than 15 minutes late?
30%
chance · ±3 pts
+2 pts · 24h
HOW SURE WE ARE
Good. The odds now lean mostly on firmed-up weather forecasts.
Arrive 15+ late
30%
Leave 15+ late
48%
Arrive 1h+ late
14%
Cancelled
1%
WEATHER FORECASTS
LIVE
IN THE AIR
0%
15%
30%
45%
60%
2.7d
2d
1d
Now
12h
6h
Departs
Lands
Arrive at MIA more than 15 minutes late?
Calm-weather odds: 23% · changed +2 pts in 24h
+2 pts
30%
Yes 30%
No 70%
Leave DEN more than 15 minutes late?
Calm-weather odds: 37% · changed +13 pts in 24h
+13 pts
48%
Yes 48%
No 52%
Arrive at MIA more than an hour late?
Calm-weather odds: 8% · changed +1 pt in 24h
+1 pt
14%
Yes 14%
No 86%
Cancelled?
Calm-weather odds: <1% · changed +0 pts in 24h
+0 pts
1%
Yes 1%
No 99%
How late will it get to MIA?
On time or early
69%
15–30 min late
9%
30 min–1 hour late
7%
1–2 hours late
11%
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
↑
Gusts to 26 kt, 0.7 in of rain, thunderstorms forecast at MIA that day
↑
Later flights pick up delays from earlier in the day
↓
Mostly benign weather forecast at DEN
↓
DEN usually runs smoothly
Weather at each end
DEN (origin)
Gusts 23 kt Ceiling 9,000 ft Visibility 10+ mi Precip none
MIA (destination)
Gusts 26 kt Ceiling 8,000 ft Visibility 10+ mi Precip 0.71 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.