AA1621
AA1621 (American Airlines) is a multi-stop service on 10 routes, busiest Philadelphia to San Diego. Of 616 departures recorded from October 2024 to July 2026, 89.5% left on time, according to the US BTS.
- On-time departures89.5%of 616 flights
- Average delay4.8 min
- July 202631▲ 0.0%vs July 2025
- Cancelled1.0%
- Legs flown under this number10
Recorded departures by month
All legs under this number combined; see the leg table.
The most recent periods19 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 31 | 18 | ▼ 41.9% |
| February | 28 | 24 | ▼ 14.3% |
| March | 31 | 27 | ▼ 12.9% |
| April | 30 | 28 | ▼ 6.7% |
| May | 31 | 30 | ▼ 3.2% |
| June | 30 | 30 | 0.0% |
| July | 31 | 31 | 0.0% |
| August | 30 | – | – |
| September | 30 | – | – |
| October | 31 | – | in progress |
| November | 30 | – | – |
| December | 18 | – | – |
| Year to date (Jan–Jul) | 212 | 188 | ▼ 11.3% |
according to the US BTS · October 2024 → July 2026
On-time departures by month
On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.
The most recent periods19 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 100.0% | 66.7% | ▼ 33.3% |
| February | 96.3% | 63.6% | ▼ 33.9% |
| March | 93.6% | 63.0% | ▼ 32.7% |
| April | 90.0% | 96.4% | ▲ 7.1% |
| May | 96.8% | 96.7% | ▼ 0.1% |
| June | 90.0% | 93.3% | ▲ 3.7% |
| July | 90.3% | 80.7% | ▼ 10.7% |
| August | 93.3% | – | – |
| September | 96.7% | – | – |
| October | 100.0% | – | in progress |
| November | 90.0% | – | – |
| December | 66.7% | – | – |
| Year-to-date average (Jan–Jul) | 93.8% | 80.1% | ▼ 14.7% |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
The most recent periods19 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 3 | – |
| February | 1 | 2 | ▲ 100.0% |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 1 | 5 | ▲ 400.0% |
according to the US BTS · October 2024 → July 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 99.0% 610
- Cancelled 1.0% 6
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 31, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
2| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| PHL SAN Philadelphia International Airport – San Diego International Airport | 3,806 | -0.3 min | 93.9% | 474 |
| XNA DFW Northwest Arkansas National Airport – Dallas Fort Worth International Airport | 452 | 1.1 min | 90.3% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 90.0% | 0 |
| November 2024 | 26 | 26 | 96.2% | 0 |
| December 2024 | 31 | 31 | 90.3% | 0 |
| January 2025 | 31 | 31 | 100.0% | 0 |
| February 2025 | 28 | 27 | 96.3% | 1 |
| March 2025 | 31 | 31 | 93.6% | 0 |
| April 2025 | 30 | 30 | 90.0% | 0 |
| May 2025 | 31 | 31 | 96.8% | 0 |
| June 2025 | 30 | 30 | 90.0% | 0 |
| July 2025 | 31 | 31 | 90.3% | 0 |
| August 2025 | 30 | 30 | 93.3% | 0 |
| September 2025 | 30 | 30 | 96.7% | 0 |
| October 2025 | 31 | 31 | 100.0% | 0 |
| November 2025 | 30 | 30 | 90.0% | 0 |
| December 2025 | 18 | 18 | 66.7% | 0 |
| January 2026 | 18 | 15 | 66.7% | 3 |
| February 2026 | 24 | 22 | 63.6% | 2 |
| March 2026 | 27 | 27 | 63.0% | 0 |
| April 2026 | 28 | 28 | 96.4% | 0 |
| May 2026 | 30 | 30 | 96.7% | 0 |
| June 2026 | 30 | 30 | 93.3% | 0 |
| July 2026 | 31 | 31 | 80.7% | 0 |