AA521
AA521 (American Airlines) is a multi-stop service on 7 routes, busiest Memphis to Phoenix. Of 364 departures recorded from October 2024 to February 2026, 81.1% left on time, according to the US BTS.
- On-time departures81.1%of 364 flights
- Average delay17.5 min
- February 202618▲ 1,700.0%vs February 2025
- Cancelled1.4%
- Legs flown under this number7
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods11 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 5 | 44 | ▲ 780.0% |
| February | 1 | 18 | ▲ 1,700.0% |
| March | – | – | – |
| April | – | – | – |
| May | 26 | – | – |
| June | 30 | – | – |
| July | 31 | – | – |
| August | 31 | – | – |
| September | 52 | – | – |
| October | 44 | – | in progress |
| November | 1 | – | – |
| December | – | – | – |
| Year to date (Jan–Feb) | 6 | 62 | ▲ 933.3% |
according to the US BTS · October 2024 → February 2026
On-time departures by month
Months without data are left blank.
On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.
The most recent periods11 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 75.0% | 73.2% | ▼ 2.4% |
| February | 100.0% | 50.0% | ▼ 50.0% |
| March | – | – | – |
| April | – | – | – |
| May | 69.2% | – | – |
| June | 73.3% | – | – |
| July | 87.1% | – | – |
| August | 90.3% | – | – |
| September | 82.7% | – | – |
| October | 79.6% | – | in progress |
| November | 100.0% | – | – |
| December | – | – | – |
| Year-to-date average (Jan–Feb) | 87.5% | 61.6% | ▼ 29.6% |
according to the US BTS · October 2024 → February 2026
Average departure delay by month
Months without data are left blank.
according to the US BTS · October 2024 → February 2026
Cancelled departures by month
Months without data are left blank.
The most recent periods11 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 1 | 3 | ▲ 200.0% |
| February | 0 | 0 | – |
| March | – | – | – |
| April | – | – | – |
| May | 0 | – | – |
| June | 0 | – | – |
| July | 0 | – | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | – | – | – |
| Year to date (Jan–Feb) | 1 | 3 | ▲ 200.0% |
according to the US BTS · October 2024 → February 2026
This is a historical record of departures already flown, not a forecast for your flight.
Several legs: the headline figure averages all of them. See the leg table.
Cancellation share
- Not cancelled 98.6% 359
- Cancelled 1.4% 5
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Feb 11, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
4| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| MEM PHX Frederick W. Smith International Airport – Phoenix Sky Harbor International Airport | 2,029 | 30.1 min | 83.1% | 148 |
| CHS PHL Charleston International Airport – Philadelphia International Airport | 886 | 6.2 min | 82.2% | 73 |
| PHL CHS Philadelphia International Airport – Charleston International Airport | 886 | 5.3 min | 87.7% | 65 |
| PHL SJU Philadelphia International Airport – Luis Munoz Marin International Airport | 2,543 | 7.6 min | 69.4% | 37 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 36 | 36 | 94.4% | 0 |
| November 2024 | 31 | 31 | 93.6% | 0 |
| December 2024 | 14 | 13 | 84.6% | 1 |
| January 2025 | 5 | 4 | 75.0% | 1 |
| February 2025 | 1 | 1 | 100.0% | 0 |
| May 2025 | 26 | 26 | 69.2% | 0 |
| June 2025 | 30 | 30 | 73.3% | 0 |
| July 2025 | 31 | 31 | 87.1% | 0 |
| August 2025 | 31 | 31 | 90.3% | 0 |
| September 2025 | 52 | 52 | 82.7% | 0 |
| October 2025 | 44 | 44 | 79.6% | 0 |
| November 2025 | 1 | 1 | 100.0% | 0 |
| January 2026 | 44 | 41 | 73.2% | 3 |
| February 2026 | 18 | 18 | 50.0% | 0 |