AA431
AA431 (American Airlines) is a multi-stop service on 2 routes, busiest Chicago to San Antonio. Of 404 departures recorded from October 2024 to July 2026, 57.1% left on time, according to the US BTS.
- On-time departures57.1%of 404 flights
- Average delay35.7 min
- July 202631▲ 14.8%vs July 2025
- Cancelled3.0%
- Legs flown under this number2
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 | 22 | – | – |
| February | 24 | 3 | ▼ 87.5% |
| March | 31 | – | – |
| April | 30 | – | – |
| May | 27 | 11 | ▼ 59.3% |
| June | 30 | 30 | 0.0% |
| July | 27 | 31 | ▲ 14.8% |
| August | 20 | – | – |
| September | 12 | – | – |
| October | 27 | – | in progress |
| November | 1 | – | – |
| December | – | – | – |
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 | 81.0% | – | – |
| February | 79.2% | 66.7% | ▼ 15.8% |
| March | 80.7% | – | – |
| April | 63.3% | – | – |
| May | 57.7% | 27.3% | ▼ 52.7% |
| June | 39.3% | 39.3% | 0.0% |
| July | 37.5% | 26.7% | ▼ 28.9% |
| August | 42.1% | – | – |
| September | 41.7% | – | – |
| October | 70.4% | – | in progress |
| November | 100.0% | – | – |
| December | – | – | – |
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 | – | – |
| February | 0 | 0 | – |
| March | 0 | – | – |
| April | 0 | – | – |
| May | 1 | 0 | ▼ 100.0% |
| June | 2 | 2 | 0.0% |
| July | 3 | 1 | ▼ 66.7% |
| August | 1 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | – | – | – |
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 97.0% 392
- Cancelled 3.0% 12
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 31, 2026
Legs flown under this number
1| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| ORD SAT Chicago O'Hare International Airport – San Antonio International Airport | 1,677 | 35.5 min | 57.1% | 401 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 65.0% | 0 |
| November 2024 | 29 | 29 | 75.9% | 0 |
| December 2024 | 29 | 28 | 60.7% | 1 |
| January 2025 | 22 | 21 | 81.0% | 1 |
| February 2025 | 24 | 24 | 79.2% | 0 |
| March 2025 | 31 | 31 | 80.7% | 0 |
| April 2025 | 30 | 30 | 63.3% | 0 |
| May 2025 | 27 | 26 | 57.7% | 1 |
| June 2025 | 30 | 28 | 39.3% | 2 |
| July 2025 | 27 | 24 | 37.5% | 3 |
| August 2025 | 20 | 19 | 42.1% | 1 |
| September 2025 | 12 | 12 | 41.7% | 0 |
| October 2025 | 27 | 27 | 70.4% | 0 |
| November 2025 | 1 | 1 | 100.0% | 0 |
| February 2026 | 3 | 3 | 66.7% | 0 |
| May 2026 | 11 | 11 | 27.3% | 0 |
| June 2026 | 30 | 28 | 39.3% | 2 |
| July 2026 | 31 | 30 | 26.7% | 1 |