AS129
AS129 (Alaska Airlines) is a multi-stop service on 7 routes, busiest Sacramento to Seattle. Of 271 departures recorded from October 2024 to April 2026, 83.6% left on time, according to the US BTS.
- On-time departures83.6%of 271 flights
- Average delay3.3 min
- April 202621▲ 75.0%vs April 2025
- Cancelled1.1%
- Legs flown under this number7
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods14 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 19 | 6 | ▼ 68.4% |
| February | 18 | 17 | ▼ 5.6% |
| March | 20 | 30 | ▲ 50.0% |
| April | 12 | 21 | ▲ 75.0% |
| May | 17 | – | – |
| June | 11 | – | – |
| July | – | – | – |
| August | 1 | – | – |
| September | – | – | – |
| October | 23 | – | in progress |
| November | 3 | – | – |
| December | 30 | – | – |
| Year to date (Jan–Apr) | 69 | 74 | ▲ 7.2% |
according to the US BTS · October 2024 → April 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 periods14 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 100.0% | 50.0% | ▼ 50.0% |
| February | 100.0% | 70.6% | ▼ 29.4% |
| March | 100.0% | 80.0% | ▼ 20.0% |
| April | 91.7% | 90.5% | ▼ 1.3% |
| May | 82.4% | – | – |
| June | 63.6% | – | – |
| July | – | – | – |
| August | 100.0% | – | – |
| September | – | – | – |
| October | 95.7% | – | in progress |
| November | 66.7% | – | – |
| December | 62.1% | – | – |
| Year-to-date average (Jan–Apr) | 97.9% | 72.8% | ▼ 25.7% |
according to the US BTS · October 2024 → April 2026
Average departure delay by month
Months without data are left blank.
according to the US BTS · October 2024 → April 2026
Cancelled departures by month
Months without data are left blank.
The most recent periods14 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | 1 | 0 | ▼ 100.0% |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | – | – |
| June | 0 | – | – |
| July | – | – | – |
| August | 0 | – | – |
| September | – | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 1 | – | – |
| Year to date (Jan–Apr) | 1 | 0 | ▼ 100.0% |
according to the US BTS · October 2024 → April 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 98.9% 268
- Cancelled 1.1% 3
Share of all recorded flights in the period, all legs. · Oct 13, 2024 → Apr 21, 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 |
|---|---|---|---|---|
| SMF SEA Sacramento International Airport – Seattle–Tacoma International Airport | 975 | -1.7 min | 91.2% | 92 |
| SEA ANC Seattle–Tacoma International Airport – Ted Stevens Anchorage International Airport | 2,326 | 8.5 min | 73.0% | 75 |
| DEN PDX Denver International Airport – Portland International Airport | 1,592 | 1.9 min | 84.8% | 47 |
| FAI SEA Fairbanks International Airport – Seattle–Tacoma International Airport | 2,462 | 13.6 min | 75.8% | 33 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 10 | 10 | 70.0% | 0 |
| November 2024 | 18 | 18 | 83.3% | 0 |
| December 2024 | 15 | 14 | 92.9% | 1 |
| January 2025 | 19 | 19 | 100.0% | 0 |
| February 2025 | 18 | 17 | 100.0% | 1 |
| March 2025 | 20 | 20 | 100.0% | 0 |
| April 2025 | 12 | 12 | 91.7% | 0 |
| May 2025 | 17 | 17 | 82.4% | 0 |
| June 2025 | 11 | 11 | 63.6% | 0 |
| August 2025 | 1 | 1 | 100.0% | 0 |
| October 2025 | 23 | 23 | 95.7% | 0 |
| November 2025 | 3 | 3 | 66.7% | 0 |
| December 2025 | 30 | 29 | 62.1% | 1 |
| January 2026 | 6 | 6 | 50.0% | 0 |
| February 2026 | 17 | 17 | 70.6% | 0 |
| March 2026 | 30 | 30 | 80.0% | 0 |
| April 2026 | 21 | 21 | 90.5% | 0 |