AS424
AS424 (Alaska Airlines) is a multi-stop service on 6 routes, busiest Seattle to Dallas-Fort Worth. Of 562 departures recorded from October 2024 to July 2026, 73.2% left on time, according to the US BTS.
- On-time departures73.2%of 562 flights
- Average delay11.7 min
- July 202630▲ 0.0%vs July 2025
- Cancelled0.5%
- Legs flown under this number6
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 | 5 | 26 | ▲ 420.0% |
| February | – | 27 | – |
| March | 13 | 31 | ▲ 138.5% |
| April | 30 | 25 | ▼ 16.7% |
| May | 30 | 19 | ▼ 36.7% |
| June | 30 | 30 | 0.0% |
| July | 30 | 30 | 0.0% |
| August | 31 | – | – |
| September | 30 | – | – |
| October | 30 | – | in progress |
| November | 29 | – | – |
| December | 30 | – | – |
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 | 80.0% | 76.0% | ▼ 5.0% |
| February | – | 77.8% | – |
| March | 76.9% | 80.7% | ▲ 4.8% |
| April | 83.3% | 68.0% | ▼ 18.4% |
| May | 76.7% | 79.0% | ▲ 3.0% |
| June | 60.0% | 50.0% | ▼ 16.7% |
| July | 55.2% | 63.3% | ▲ 14.8% |
| August | 64.5% | – | – |
| September | 73.3% | – | – |
| October | 89.7% | – | in progress |
| November | 82.8% | – | – |
| 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 | 1 | – |
| February | – | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 1 | 0 | ▼ 100.0% |
| 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 99.5% 559
- Cancelled 0.5% 3
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 |
|---|---|---|---|---|
| SEA DFW Seattle–Tacoma International Airport – Dallas Fort Worth International Airport | 2,668 | 12.1 min | 72.0% | 439 |
| SEA BOS Seattle–Tacoma International Airport – Boston Logan International Airport | 4,006 | 4.4 min | 81.6% | 76 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 35 | 35 | 80.0% | 0 |
| November 2024 | 29 | 29 | 86.2% | 0 |
| December 2024 | 22 | 22 | 72.7% | 0 |
| January 2025 | 5 | 5 | 80.0% | 0 |
| March 2025 | 13 | 13 | 76.9% | 0 |
| April 2025 | 30 | 30 | 83.3% | 0 |
| May 2025 | 30 | 30 | 76.7% | 0 |
| June 2025 | 30 | 30 | 60.0% | 0 |
| July 2025 | 30 | 29 | 55.2% | 1 |
| August 2025 | 31 | 31 | 64.5% | 0 |
| September 2025 | 30 | 30 | 73.3% | 0 |
| October 2025 | 30 | 29 | 89.7% | 1 |
| November 2025 | 29 | 29 | 82.8% | 0 |
| December 2025 | 30 | 30 | 70.0% | 0 |
| January 2026 | 26 | 25 | 76.0% | 1 |
| February 2026 | 27 | 27 | 77.8% | 0 |
| March 2026 | 31 | 31 | 80.7% | 0 |
| April 2026 | 25 | 25 | 68.0% | 0 |
| May 2026 | 19 | 19 | 79.0% | 0 |
| June 2026 | 30 | 30 | 50.0% | 0 |
| July 2026 | 30 | 30 | 63.3% | 0 |