AA1253
AA1253 (American Airlines) is a multi-stop service on 5 routes, busiest Chicago to San Francisco. Of 716 departures recorded from October 2024 to July 2026, 75.0% left on time, according to the US BTS.
- On-time departures75.0%of 716 flights
- Average delay19.2 min
- July 202631▲ 0.0%vs July 2025
- Cancelled1.1%
- Legs flown under this number5
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 | 31 | 0.0% |
| February | 28 | 26 | ▼ 7.1% |
| March | 31 | 54 | ▲ 74.2% |
| April | 30 | 60 | ▲ 100.0% |
| May | 23 | 51 | ▲ 121.7% |
| June | 29 | 30 | ▲ 3.4% |
| July | 31 | 31 | 0.0% |
| August | 31 | – | – |
| September | 27 | – | – |
| October | 30 | – | in progress |
| November | 30 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 203 | 283 | ▲ 39.4% |
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 | 90.3% | 66.7% | ▼ 26.2% |
| February | 75.0% | 91.7% | ▲ 22.2% |
| March | 77.4% | 59.6% | ▼ 23.0% |
| April | 93.1% | 75.0% | ▼ 19.4% |
| May | 60.9% | 68.6% | ▲ 12.7% |
| June | 75.9% | 60.0% | ▼ 20.9% |
| July | 71.0% | 65.5% | ▼ 7.7% |
| August | 80.7% | – | – |
| September | 85.2% | – | – |
| October | 83.3% | – | in progress |
| November | 83.3% | – | – |
| December | 61.3% | – | – |
| Year-to-date average (Jan–Jul) | 77.6% | 69.6% | ▼ 10.4% |
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 | 1 | – |
| February | 0 | 2 | – |
| March | 0 | 2 | – |
| April | 1 | 0 | ▼ 100.0% |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 2 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 1 | 7 | ▲ 600.0% |
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 98.9% 708
- Cancelled 1.1% 8
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 |
|---|---|---|---|---|
| ORD SFO Chicago O'Hare International Airport – San Francisco International Airport | 2,964 | 19.1 min | 74.2% | 571 |
| SFO ORD San Francisco International Airport – Chicago O'Hare International Airport | 2,964 | 35.3 min | 67.1% | 74 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 95.0% | 0 |
| November 2024 | 30 | 30 | 76.7% | 0 |
| December 2024 | 31 | 31 | 77.4% | 0 |
| January 2025 | 31 | 31 | 90.3% | 0 |
| February 2025 | 28 | 28 | 75.0% | 0 |
| March 2025 | 31 | 31 | 77.4% | 0 |
| April 2025 | 30 | 29 | 93.1% | 1 |
| May 2025 | 23 | 23 | 60.9% | 0 |
| June 2025 | 29 | 29 | 75.9% | 0 |
| July 2025 | 31 | 31 | 71.0% | 0 |
| August 2025 | 31 | 31 | 80.7% | 0 |
| September 2025 | 27 | 27 | 85.2% | 0 |
| October 2025 | 30 | 30 | 83.3% | 0 |
| November 2025 | 30 | 30 | 83.3% | 0 |
| December 2025 | 31 | 31 | 61.3% | 0 |
| January 2026 | 31 | 30 | 66.7% | 1 |
| February 2026 | 26 | 24 | 91.7% | 2 |
| March 2026 | 54 | 52 | 59.6% | 2 |
| April 2026 | 60 | 60 | 75.0% | 0 |
| May 2026 | 51 | 51 | 68.6% | 0 |
| June 2026 | 30 | 30 | 60.0% | 0 |
| July 2026 | 31 | 29 | 65.5% | 2 |