AA403
AA403 (American Airlines) is a multi-stop service on 5 routes, busiest Chicago to Buffalo. Of 420 departures recorded from October 2024 to July 2026, 66.4% left on time, according to the US BTS.
- On-time departures66.4%of 420 flights
- Average delay24.6 min
- July 202631▲ 0.0%vs July 2025
- Cancelled2.9%
- Legs flown under this number5
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods15 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 28 | 5 | ▼ 82.1% |
| February | 26 | – | – |
| March | 31 | – | – |
| April | 7 | 7 | 0.0% |
| May | 28 | 16 | ▼ 42.9% |
| June | 30 | 30 | 0.0% |
| July | 31 | 31 | 0.0% |
| August | 4 | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 28 | – | – |
| December | 30 | – | – |
according to the US BTS · October 2024 → July 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 periods15 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 51.9% | 100.0% | ▲ 92.9% |
| February | 80.8% | – | – |
| March | 73.3% | – | – |
| April | 71.4% | 71.4% | 0.0% |
| May | 78.6% | 43.8% | ▼ 44.3% |
| June | 72.4% | 46.4% | ▼ 35.9% |
| July | 25.8% | 38.5% | ▲ 49.0% |
| August | 100.0% | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 92.9% | – | – |
| December | 62.1% | – | – |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
Months without data are left blank.
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
Months without data are left blank.
The most recent periods15 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 1 | 0 | ▼ 100.0% |
| February | 0 | – | – |
| March | 1 | – | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 1 | 2 | ▲ 100.0% |
| July | 0 | 5 | – |
| August | 0 | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 0 | – | – |
| December | 1 | – | – |
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 97.1% 408
- Cancelled 2.9% 12
Share of all recorded flights in the period, all legs. · Oct 13, 2024 → Jul 31, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
3| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| ORD BUF Chicago O'Hare International Airport – Buffalo Niagara International Airport | 760 | 42.4 min | 50.7% | 150 |
| DFW PIT Dallas Fort Worth International Airport – Pittsburgh International Airport | 1,716 | 17.8 min | 69.3% | 143 |
| BOS PHL Boston Logan International Airport – Philadelphia International Airport | 450 | 12.3 min | 80.6% | 99 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 27 | 27 | 92.6% | 0 |
| November 2024 | 31 | 30 | 86.7% | 1 |
| December 2024 | 30 | 30 | 63.3% | 0 |
| January 2025 | 28 | 27 | 51.9% | 1 |
| February 2025 | 26 | 26 | 80.8% | 0 |
| March 2025 | 31 | 30 | 73.3% | 1 |
| April 2025 | 7 | 7 | 71.4% | 0 |
| May 2025 | 28 | 28 | 78.6% | 0 |
| June 2025 | 30 | 29 | 72.4% | 1 |
| July 2025 | 31 | 31 | 25.8% | 0 |
| August 2025 | 4 | 4 | 100.0% | 0 |
| November 2025 | 28 | 28 | 92.9% | 0 |
| December 2025 | 30 | 29 | 62.1% | 1 |
| January 2026 | 5 | 5 | 100.0% | 0 |
| April 2026 | 7 | 7 | 71.4% | 0 |
| May 2026 | 16 | 16 | 43.8% | 0 |
| June 2026 | 30 | 28 | 46.4% | 2 |
| July 2026 | 31 | 26 | 38.5% | 5 |