AS477
AS477 (Alaska Airlines) is a multi-stop service on 2 routes, busiest Seattle to Newark. Of 618 departures recorded from October 2024 to July 2026, 69.3% left on time, according to the US BTS.
- On-time departures69.3%of 618 flights
- Average delay22.0 min
- July 202631▲ 0.0%vs July 2025
- Cancelled2.4%
- Legs flown under this number2
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 | 28 | 31 | ▲ 10.7% |
| April | 24 | 21 | ▼ 12.5% |
| May | 31 | 19 | ▼ 38.7% |
| June | 30 | 30 | 0.0% |
| July | 31 | 31 | 0.0% |
| August | 31 | – | – |
| September | 30 | – | – |
| October | 30 | – | in progress |
| November | 30 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 203 | 191 | ▼ 5.9% |
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 | 80.0% | 76.7% | ▼ 4.2% |
| February | 77.8% | 80.8% | ▲ 3.8% |
| March | 71.4% | 51.6% | ▼ 27.7% |
| April | 66.7% | 95.2% | ▲ 42.9% |
| May | 41.9% | 89.5% | ▲ 113.3% |
| June | 75.9% | 75.9% | 0.0% |
| July | 53.3% | 60.0% | ▲ 12.5% |
| August | 66.7% | – | – |
| September | 90.0% | – | – |
| October | 51.7% | – | in progress |
| November | 63.0% | – | – |
| December | 64.5% | – | – |
| Year-to-date average (Jan–Jul) | 66.7% | 75.7% | ▲ 13.4% |
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 | 1 | 0.0% |
| February | 1 | 2 | ▲ 100.0% |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 1 | 1 | 0.0% |
| July | 1 | 1 | 0.0% |
| August | 1 | – | – |
| September | 0 | – | – |
| October | 1 | – | in progress |
| November | 3 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 4 | 5 | ▲ 25.0% |
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 97.6% 603
- Cancelled 2.4% 15
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 EWR Seattle–Tacoma International Airport – Newark Liberty International Airport | 3,855 | 24.2 min | 67.4% | 416 |
| EWR SEA Newark Liberty International Airport – Seattle–Tacoma International Airport | 3,855 | 17.6 min | 73.2% | 202 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 80.0% | 0 |
| November 2024 | 29 | 29 | 65.5% | 0 |
| December 2024 | 23 | 22 | 68.2% | 1 |
| January 2025 | 31 | 30 | 80.0% | 1 |
| February 2025 | 28 | 27 | 77.8% | 1 |
| March 2025 | 28 | 28 | 71.4% | 0 |
| April 2025 | 24 | 24 | 66.7% | 0 |
| May 2025 | 31 | 31 | 41.9% | 0 |
| June 2025 | 30 | 29 | 75.9% | 1 |
| July 2025 | 31 | 30 | 53.3% | 1 |
| August 2025 | 31 | 30 | 66.7% | 1 |
| September 2025 | 30 | 30 | 90.0% | 0 |
| October 2025 | 30 | 29 | 51.7% | 1 |
| November 2025 | 30 | 27 | 63.0% | 3 |
| December 2025 | 31 | 31 | 64.5% | 0 |
| January 2026 | 31 | 30 | 76.7% | 1 |
| February 2026 | 28 | 26 | 80.8% | 2 |
| March 2026 | 31 | 31 | 51.6% | 0 |
| April 2026 | 21 | 21 | 95.2% | 0 |
| May 2026 | 19 | 19 | 89.5% | 0 |
| June 2026 | 30 | 29 | 75.9% | 1 |
| July 2026 | 31 | 30 | 60.0% | 1 |