Flight profile · Frontier Airlines
F91226
Raleigh–Durham (RDU) to San Juan (SJU) · scheduled 9:15 PM – 12:46 AM
How F91226 performs
286 operations, 2024-01-04 to 2026-06-30.
F91226 arrived on time 58.5% of the time, against 70.1% for all RDU → SJU flights — this specific departure is 11.7 percentage points worse than the route as a whole. Against Frontier Airlines’s own flights on this route it is 3.8 points worse.
Source: US DOT Bureau of Transportation Statistics · 286 operations between 2024-01-04 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| F91226 | 58.5% | 3.15% | 8 min | 15.9% | 286 |
| Frontier Airlines on RDU → SJU | 62.3% | 2.39% | 3 min | 16.0% | 544 |
| All RDU → SJU flights | 70.1% | 1.49% | -3 min | 13.0% | 1,609 |
Source: FlyerIntel analysis of US DOT BTS data · 2024-01-04 to 2026-06-30
Why F91226 runs late
Where US DOT attributed the delay minutes on this flight.
crew, maintenance, boarding, fuelling — within the carrier’s control
the inbound aircraft was late, so this flight started late
airspace and airport capacity, including weather-driven flow control
weather severe enough to stop this flight specifically
Share of the delay minutes US DOT attributed to each cause for F91226 on RDU → SJU. A single late flight can carry more than one cause, and only delays of fifteen minutes or more are attributed at all.
Other departures on RDU → SJU
Same airports, same journey — and not the same odds of arriving on time.
| Flight | Airline | On time | Median arrival | Operations |
|---|---|---|---|---|
| B62929 | JetBlue | 73.7% | 6 min early | 781 |
Every departure listed carries at least 600 operations, so the comparison is between figures that mean something. Schedules change; confirm the departure still operates before booking around this.
Data and methodology
Calculated by FlyerIntel from 286 records of F91226 operating RDU → SJU, 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.