AS644
AS644 (Alaska Airlines) is a multi-stop service on 3 routes, busiest Seattle to Phoenix. Of 472 departures recorded from October 2024 to July 2026, 72.8% left on time, according to the US BTS.
- On-time departures72.8%of 472 flights
- Average delay11.3 min
- July 202630▲ 7.1%vs July 2025
- Cancelled0.2%
- Legs flown under this number3
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods18 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 27 | 26 | ▼ 3.7% |
| February | 26 | 10 | ▼ 61.5% |
| March | 31 | 9 | ▼ 71.0% |
| April | 29 | 12 | ▼ 58.6% |
| May | 31 | – | – |
| June | 30 | 21 | ▼ 30.0% |
| July | 28 | 30 | ▲ 7.1% |
| August | 25 | – | – |
| September | 21 | – | – |
| October | 25 | – | in progress |
| November | 19 | – | – |
| December | 20 | – | – |
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 periods18 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 85.2% | 73.1% | ▼ 14.2% |
| February | 80.8% | 80.0% | ▼ 1.0% |
| March | 71.0% | 100.0% | ▲ 40.9% |
| April | 75.9% | 83.3% | ▲ 9.8% |
| May | 67.7% | – | – |
| June | 73.3% | 66.7% | ▼ 9.1% |
| July | 50.0% | 73.3% | ▲ 46.7% |
| August | 56.0% | – | – |
| September | 66.7% | – | – |
| October | 70.8% | – | in progress |
| November | 73.7% | – | – |
| December | 70.0% | – | – |
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 periods18 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | – | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 1 | – | in progress |
| November | 0 | – | – |
| December | 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 99.8% 471
- Cancelled 0.2% 1
Share of all recorded flights in the period, all legs. · Oct 13, 2024 → Jul 31, 2026
Legs flown under this number
1| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| SEA PHX Seattle–Tacoma International Airport – Phoenix Sky Harbor International Airport | 1,782 | 11.6 min | 72.0% | 451 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 12 | 12 | 83.3% | 0 |
| November 2024 | 20 | 20 | 75.0% | 0 |
| December 2024 | 20 | 20 | 90.0% | 0 |
| January 2025 | 27 | 27 | 85.2% | 0 |
| February 2025 | 26 | 26 | 80.8% | 0 |
| March 2025 | 31 | 31 | 71.0% | 0 |
| April 2025 | 29 | 29 | 75.9% | 0 |
| May 2025 | 31 | 31 | 67.7% | 0 |
| June 2025 | 30 | 30 | 73.3% | 0 |
| July 2025 | 28 | 28 | 50.0% | 0 |
| August 2025 | 25 | 25 | 56.0% | 0 |
| September 2025 | 21 | 21 | 66.7% | 0 |
| October 2025 | 25 | 24 | 70.8% | 1 |
| November 2025 | 19 | 19 | 73.7% | 0 |
| December 2025 | 20 | 20 | 70.0% | 0 |
| January 2026 | 26 | 26 | 73.1% | 0 |
| February 2026 | 10 | 10 | 80.0% | 0 |
| March 2026 | 9 | 9 | 100.0% | 0 |
| April 2026 | 12 | 12 | 83.3% | 0 |
| June 2026 | 21 | 21 | 66.7% | 0 |
| July 2026 | 30 | 30 | 73.3% | 0 |