AA1639
AA1639 (American Airlines) is a multi-stop service on 7 routes, busiest Miami to Denver. Of 682 departures recorded from October 2024 to July 2026, 71.5% left on time, according to the US BTS.
- On-time departures71.5%of 682 flights
- Average delay20.7 min
- July 202662▲ 100.0%vs July 2025
- Cancelled0.9%
- Legs flown under this number7
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 | 5 | ▼ 83.9% |
| February | 28 | 17 | ▼ 39.3% |
| March | 31 | 29 | ▼ 6.5% |
| April | 30 | 26 | ▼ 13.3% |
| May | 31 | 42 | ▲ 35.5% |
| June | 30 | 60 | ▲ 100.0% |
| July | 31 | 62 | ▲ 100.0% |
| August | 31 | – | – |
| September | 30 | – | – |
| October | 30 | – | in progress |
| November | 30 | – | – |
| December | 30 | – | – |
| Year to date (Jan–Jul) | 212 | 241 | ▲ 13.7% |
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 | 54.8% | 80.0% | ▲ 45.9% |
| February | 67.9% | 88.2% | ▲ 30.0% |
| March | 80.0% | 82.8% | ▲ 3.5% |
| April | 63.3% | 61.5% | ▼ 2.8% |
| May | 67.7% | 83.3% | ▲ 23.0% |
| June | 66.7% | 73.3% | ▲ 10.0% |
| July | 58.1% | 50.0% | ▼ 13.9% |
| August | 45.2% | – | – |
| September | 70.0% | – | – |
| October | 89.7% | – | in progress |
| November | 93.1% | – | – |
| December | 86.7% | – | – |
| Year-to-date average (Jan–Jul) | 65.5% | 74.2% | ▲ 13.2% |
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 | 0 | – |
| February | 0 | 0 | – |
| March | 1 | 0 | ▼ 100.0% |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 2 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 1 | – | in progress |
| November | 1 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 1 | 2 | ▲ 100.0% |
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 99.1% 676
- Cancelled 0.9% 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
4| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| MIA DEN Miami International Airport – Denver International Airport | 2,749 | 27.2 min | 66.8% | 378 |
| DFW LAX Dallas Fort Worth International Airport – Los Angeles International Airport | 1,983 | 5.6 min | 88.4% | 157 |
| ORD BZN Chicago O'Hare International Airport – Bozeman Yellowstone International Airport | 1,903 | 16.9 min | 66.2% | 72 |
| BZN ORD Bozeman Yellowstone International Airport – Chicago O'Hare International Airport | 1,903 | 24.0 min | 63.4% | 72 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 18 | 18 | 94.4% | 0 |
| November 2024 | 29 | 28 | 85.7% | 1 |
| December 2024 | 31 | 31 | 71.0% | 0 |
| January 2025 | 31 | 31 | 54.8% | 0 |
| February 2025 | 28 | 28 | 67.9% | 0 |
| March 2025 | 31 | 30 | 80.0% | 1 |
| April 2025 | 30 | 30 | 63.3% | 0 |
| May 2025 | 31 | 31 | 67.7% | 0 |
| June 2025 | 30 | 30 | 66.7% | 0 |
| July 2025 | 31 | 31 | 58.1% | 0 |
| August 2025 | 31 | 31 | 45.2% | 0 |
| September 2025 | 30 | 30 | 70.0% | 0 |
| October 2025 | 30 | 29 | 89.7% | 1 |
| November 2025 | 30 | 29 | 93.1% | 1 |
| December 2025 | 30 | 30 | 86.7% | 0 |
| January 2026 | 5 | 5 | 80.0% | 0 |
| February 2026 | 17 | 17 | 88.2% | 0 |
| March 2026 | 29 | 29 | 82.8% | 0 |
| April 2026 | 26 | 26 | 61.5% | 0 |
| May 2026 | 42 | 42 | 83.3% | 0 |
| June 2026 | 60 | 60 | 73.3% | 0 |
| July 2026 | 62 | 60 | 50.0% | 2 |