Flight profile · Frontier Airlines
F91517
Philadelphia (PHL) to Raleigh–Durham (RDU) · scheduled 11:49 AM – 1:24 PM
How F91517 performs
631 operations, 2023-11-16 to 2026-06-29.
F91517 arrived on time 78.8% of the time, against 74.9% for all PHL → RDU flights — this specific departure is 4.0 percentage points better than the route as a whole. Against Frontier Airlines’s own flights on this route it is 2.5 points better.
Source: US DOT Bureau of Transportation Statistics · 631 operations between 2023-11-16 to 2026-06-29
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| F91517 | 78.8% | 1.90% | -10 min | 8.2% | 631 |
| Frontier Airlines on PHL → RDU | 76.4% | 2.16% | -9 min | 9.7% | 2,035 |
| All PHL → RDU flights | 74.9% | 2.28% | -6 min | 10.6% | 7,334 |
Source: FlyerIntel analysis of US DOT BTS data · 2023-11-16 to 2026-06-29
Other routes F91517 has flown
A flight number is a slot in a schedule, and carriers reassign it. These are the other city pairs this number served in the analysis period.
Because the same number has served different journeys, the statistics above describe only the route F91517 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 631 records of F91517 operating PHL → RDU, 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.