AS158
AS158 (Alaska Airlines) is a multi-stop service on 11 routes, busiest Seattle to San Francisco. Of 178 departures recorded from October 2024 to March 2026, 76.0% left on time, according to the US BTS.
- On-time departures76.0%of 178 flights
- Average delay10.4 min
- March 20263▼ 82.4%vs March 2025
- Cancelled1.7%
- Legs flown under this number11
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods13 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 9 | 25 | ▲ 177.8% |
| February | 12 | 11 | ▼ 8.3% |
| March | 17 | 3 | ▼ 82.4% |
| April | 12 | – | – |
| May | 23 | – | – |
| June | 10 | – | – |
| July | – | – | – |
| August | 3 | – | – |
| September | 4 | – | – |
| October | 22 | – | in progress |
| November | – | – | – |
| December | 1 | – | – |
| Year to date (Jan–Mar) | 38 | 39 | ▲ 2.6% |
according to the US BTS · October 2024 → March 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 periods13 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 77.8% | 75.0% | ▼ 3.6% |
| February | 58.3% | 100.0% | ▲ 71.4% |
| March | 70.6% | 33.3% | ▼ 52.8% |
| April | 75.0% | – | – |
| May | 60.9% | – | – |
| June | 60.0% | – | – |
| July | – | – | – |
| August | 100.0% | – | – |
| September | 100.0% | – | – |
| October | 72.7% | – | in progress |
| November | – | – | – |
| December | 100.0% | – | – |
| Year-to-date average (Jan–Mar) | 68.9% | 69.4% | ▲ 0.8% |
according to the US BTS · October 2024 → March 2026
Average departure delay by month
Months without data are left blank.
according to the US BTS · October 2024 → March 2026
Cancelled departures by month
Months without data are left blank.
The most recent periods13 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 1 | – |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | – | – |
| May | 0 | – | – |
| June | 0 | – | – |
| July | – | – | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | – | – | – |
| December | 0 | – | – |
| Year to date (Jan–Mar) | 0 | 1 |
according to the US BTS · October 2024 → March 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 98.3% 175
- Cancelled 1.7% 3
Share of all recorded flights in the period, all legs. · Oct 19, 2024 → Mar 18, 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 SFO Seattle–Tacoma International Airport – San Francisco International Airport | 1,093 | 14.4 min | 64.1% | 78 |
| FAI ANC Fairbanks International Airport – Ted Stevens Anchorage International Airport | 418 | 6.2 min | 82.9% | 36 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 3 | 1 | 100.0% | 2 |
| November 2024 | 8 | 8 | 100.0% | 0 |
| December 2024 | 15 | 15 | 100.0% | 0 |
| January 2025 | 9 | 9 | 77.8% | 0 |
| February 2025 | 12 | 12 | 58.3% | 0 |
| March 2025 | 17 | 17 | 70.6% | 0 |
| April 2025 | 12 | 12 | 75.0% | 0 |
| May 2025 | 23 | 23 | 60.9% | 0 |
| June 2025 | 10 | 10 | 60.0% | 0 |
| August 2025 | 3 | 3 | 100.0% | 0 |
| September 2025 | 4 | 4 | 100.0% | 0 |
| October 2025 | 22 | 22 | 72.7% | 0 |
| December 2025 | 1 | 1 | 100.0% | 0 |
| January 2026 | 25 | 24 | 75.0% | 1 |
| February 2026 | 11 | 11 | 100.0% | 0 |
| March 2026 | 3 | 3 | 33.3% | 0 |