Flight profile · American Airlines
AA551
Miami (MIA) to Philadelphia (PHL) · scheduled 9:40 AM – 11:15 AM
How AA551 performs
686 operations, 2023-07-01 to 2026-06-30.
AA551 arrived on time 85.5% of the time, against 74.5% for all MIA → PHL flights — this specific departure is 11.0 percentage points better than the route as a whole. Against American Airlines’s own flights on this route it is 10.2 points better.
Source: US DOT Bureau of Transportation Statistics · 686 operations between 2023-07-01 to 2026-06-30
Against the rest of the route
| On time | Cancelled | Median delay | Severe | Flights | |
|---|---|---|---|---|---|
| AA551 | 85.5% | 0.29% | -10 min | 6.1% | 686 |
| American Airlines on MIA → PHL | 75.3% | 1.74% | -5 min | 9.5% | 7,514 |
| All MIA → PHL flights | 74.5% | 1.87% | -5 min | 10.3% | 9,573 |
Source: FlyerIntel analysis of US DOT BTS data · 2023-07-01 to 2026-06-30
Other routes AA551 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.
| Route | Operated | Flights | On time |
|---|---|---|---|
| PHL→MIA Philadelphia to Miami | 2026-04-07 – 2026-05-20 | 42 | — |
| ICT→DFW Wichita to Dallas–Fort Worth | 2026-03-08 – 2026-03-08 | 1 | — |
| CHS→MIA Charleston to Miami | 2025-12-19 – 2026-01-05 | 17 | — |
| MCO→PHL Orlando to Philadelphia | 2023-11-05 – 2025-03-29 | 155 | 70.4% |
| FLL→DFW Fort Lauderdale to Dallas–Fort Worth | 2024-11-05 – 2024-11-05 | 1 | — |
Because the same number has served different journeys, the statistics above describe only the route AA551 currently operates. Blending them would produce an average of two different flights.
Data and methodology
Calculated by FlyerIntel from 686 records of AA551 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.