AA1638
AA1638 (American Airlines) is a multi-stop service on 7 routes, busiest Phoenix to Denver. Of 723 departures recorded from October 2024 to July 2026, 67.5% left on time, according to the US BTS.
- On-time departures67.5%of 723 flights
- Average delay22.4 min
- July 202660▲ 100.0%vs July 2025
- Cancelled1.4%
- 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 | 22 | 34 | ▲ 54.5% |
| February | 26 | 36 | ▲ 38.5% |
| March | 31 | 50 | ▲ 61.3% |
| April | 30 | 32 | ▲ 6.7% |
| May | 30 | 38 | ▲ 26.7% |
| June | 30 | 60 | ▲ 100.0% |
| July | 30 | 60 | ▲ 100.0% |
| August | 31 | – | – |
| September | 18 | – | – |
| October | 29 | – | in progress |
| November | 32 | – | – |
| December | 32 | – | – |
| Year to date (Jan–Jul) | 199 | 310 | ▲ 55.8% |
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 | 90.9% | 72.4% | ▼ 20.3% |
| February | 88.5% | 83.3% | ▼ 5.8% |
| March | 74.2% | 52.0% | ▼ 29.9% |
| April | 70.0% | 71.9% | ▲ 2.7% |
| May | 73.3% | 81.6% | ▲ 11.3% |
| June | 66.7% | 61.7% | ▼ 7.5% |
| July | 31.0% | 35.6% | ▲ 14.7% |
| August | 80.7% | – | – |
| September | 72.2% | – | – |
| October | 69.0% | – | in progress |
| November | 80.0% | – | – |
| December | 62.5% | – | – |
| Year-to-date average (Jan–Jul) | 70.7% | 65.5% | ▼ 7.3% |
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 | 5 | – |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 1 | 1 | 0.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 2 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 1 | 6 | ▲ 500.0% |
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 98.6% 713
- Cancelled 1.4% 10
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
5| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| PHX DEN Phoenix Sky Harbor International Airport – Denver International Airport | 968 | 19.3 min | 69.6% | 425 |
| DFW CHS Dallas Fort Worth International Airport – Charleston International Airport | 1,586 | 18.7 min | 65.9% | 90 |
| CHS DFW Charleston International Airport – Dallas Fort Worth International Airport | 1,586 | 19.7 min | 65.9% | 83 |
| DEN PHX Denver International Airport – Phoenix Sky Harbor International Airport | 968 | 40.2 min | 52.2% | 70 |
| DFW ORD Dallas Fort Worth International Airport – Chicago O'Hare International Airport | 1,291 | 15.3 min | 78.1% | 37 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 30 | 30 | 80.0% | 0 |
| November 2024 | 20 | 19 | 73.7% | 1 |
| December 2024 | 22 | 22 | 63.6% | 0 |
| January 2025 | 22 | 22 | 90.9% | 0 |
| February 2025 | 26 | 26 | 88.5% | 0 |
| March 2025 | 31 | 31 | 74.2% | 0 |
| April 2025 | 30 | 30 | 70.0% | 0 |
| May 2025 | 30 | 30 | 73.3% | 0 |
| June 2025 | 30 | 30 | 66.7% | 0 |
| July 2025 | 30 | 29 | 31.0% | 1 |
| August 2025 | 31 | 31 | 80.7% | 0 |
| September 2025 | 18 | 18 | 72.2% | 0 |
| October 2025 | 29 | 29 | 69.0% | 0 |
| November 2025 | 32 | 30 | 80.0% | 2 |
| December 2025 | 32 | 32 | 62.5% | 0 |
| January 2026 | 34 | 29 | 72.4% | 5 |
| February 2026 | 36 | 36 | 83.3% | 0 |
| March 2026 | 50 | 50 | 52.0% | 0 |
| April 2026 | 32 | 32 | 71.9% | 0 |
| May 2026 | 38 | 38 | 81.6% | 0 |
| June 2026 | 60 | 60 | 61.7% | 0 |
| July 2026 | 60 | 59 | 35.6% | 1 |