AA1277
AA1277 (American Airlines) is a multi-stop service on 6 routes, busiest Chicago to Miami. Of 657 departures recorded from October 2024 to July 2026, 63.0% left on time, according to the US BTS.
- On-time departures63.0%of 657 flights
- Average delay28.0 min
- July 202631▲ 3.3%vs July 2025
- Cancelled1.8%
- Legs flown under this number6
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 | 28 | 0.0% |
| March | 31 | 28 | ▼ 9.7% |
| April | 30 | 53 | ▲ 76.7% |
| May | 31 | 49 | ▲ 58.1% |
| June | 30 | 29 | ▼ 3.3% |
| July | 30 | 31 | ▲ 3.3% |
| August | 31 | – | – |
| September | 30 | – | – |
| October | 31 | – | in progress |
| November | 1 | – | – |
| December | 27 | – | – |
| Year to date (Jan–Jul) | 211 | 249 | ▲ 18.0% |
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 | 66.7% | 55.2% | ▼ 17.2% |
| February | 67.9% | 57.1% | ▼ 15.8% |
| March | 62.1% | 35.7% | ▼ 42.5% |
| April | 65.5% | 78.9% | ▲ 20.3% |
| May | 67.7% | 71.4% | ▲ 5.4% |
| June | 41.4% | 96.6% | ▲ 133.3% |
| July | 35.7% | 80.7% | ▲ 125.8% |
| August | 48.3% | – | – |
| September | 53.3% | – | – |
| October | 64.5% | – | in progress |
| November | 100.0% | – | – |
| December | 51.9% | – | – |
| Year-to-date average (Jan–Jul) | 58.1% | 67.9% | ▲ 16.8% |
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 | 1 | 2 | ▲ 100.0% |
| February | 0 | 0 | – |
| March | 2 | 0 | ▼ 100.0% |
| April | 1 | 1 | 0.0% |
| May | 0 | 0 | – |
| June | 1 | 0 | ▼ 100.0% |
| July | 2 | 0 | ▼ 100.0% |
| August | 2 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 7 | 3 | ▼ 57.1% |
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 98.2% 645
- Cancelled 1.8% 12
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
4| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| ORD MIA Chicago O'Hare International Airport – Miami International Airport | 1,930 | 29.3 min | 58.5% | 450 |
| BOS LAX Boston Logan International Airport – Los Angeles International Airport | 4,193 | 14.2 min | 88.4% | 69 |
| DFW CHS Dallas Fort Worth International Airport – Charleston International Airport | 1,586 | 10.1 min | 75.0% | 44 |
| CHS DFW Charleston International Airport – Dallas Fort Worth International Airport | 1,586 | 37.9 min | 74.4% | 44 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 75.0% | 0 |
| November 2024 | 28 | 28 | 75.0% | 0 |
| December 2024 | 29 | 29 | 51.7% | 0 |
| January 2025 | 31 | 30 | 66.7% | 1 |
| February 2025 | 28 | 28 | 67.9% | 0 |
| March 2025 | 31 | 29 | 62.1% | 2 |
| April 2025 | 30 | 29 | 65.5% | 1 |
| May 2025 | 31 | 31 | 67.7% | 0 |
| June 2025 | 30 | 29 | 41.4% | 1 |
| July 2025 | 30 | 28 | 35.7% | 2 |
| August 2025 | 31 | 29 | 48.3% | 2 |
| September 2025 | 30 | 30 | 53.3% | 0 |
| October 2025 | 31 | 31 | 64.5% | 0 |
| November 2025 | 1 | 1 | 100.0% | 0 |
| December 2025 | 27 | 27 | 51.9% | 0 |
| January 2026 | 31 | 29 | 55.2% | 2 |
| February 2026 | 28 | 28 | 57.1% | 0 |
| March 2026 | 28 | 28 | 35.7% | 0 |
| April 2026 | 53 | 52 | 78.9% | 1 |
| May 2026 | 49 | 49 | 71.4% | 0 |
| June 2026 | 29 | 29 | 96.6% | 0 |
| July 2026 | 31 | 31 | 80.7% | 0 |