Flight profile · Frontier Airlines
F91204
Miami (MIA) to Philadelphia (PHL) · scheduled 5:30 AM – 8:29 AM
How F91204 performs
562 operations, 2024-01-11 to 2026-06-29.
F91204 arrived on time 79.0% of the time, against 74.5% for all MIA → PHL flights — this specific departure is 4.5 percentage points better than the route as a whole. Against Frontier Airlines’s own flights on this route it is 5.3 points better.
Source: US DOT Bureau of Transportation Statistics · 562 operations between 2024-01-11 to 2026-06-29
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| F91204 | 79.0% | 1.78% | -11 min | 10.0% | 562 |
| Frontier Airlines on MIA → PHL | 73.7% | 1.93% | -7 min | 12.9% | 1,192 |
| All MIA → PHL flights | 74.5% | 1.87% | -5 min | 10.3% | 9,573 |
Source: FlyerIntel analysis of US DOT BTS data · 2024-01-11 to 2026-06-29
Data and methodology
Calculated by FlyerIntel from 562 records of F91204 operating MIA → PHL, published by the US DOT Bureau of Transportation Statistics. A flight counts as delayed when it arrives 15 or more minutes after schedule. Cancelled and diverted flights are excluded from the on-time rate and reported separately. Flight numbers are resolved as carrier plus number plus route, because the same number serves different routes over time.