AS153
AS153 (Alaska Airlines) is a multi-stop service on 10 routes, busiest San Francisco to Seattle. Of 146 departures recorded from March 2025 to March 2026, 84.7% left on time, according to the US BTS.
- On-time departures84.7%of 146 flights
- Average delay5.2 min
- March 20263▲ 50.0%vs March 2025
- Cancelled1.4%
- Legs flown under this number10
Recorded departures by month
Short series — AS153 has only 10 months so far. Enough to show the level now, not enough to read a trend.
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods10 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | – | – | – |
| February | – | – | – |
| March | 2 | 3 | ▲ 50.0% |
| April | 12 | – | – |
| May | 31 | – | – |
| June | 11 | – | – |
| July | – | – | – |
| August | 12 | – | – |
| September | 30 | – | – |
| October | 9 | – | in progress |
| November | 20 | – | – |
| December | 16 | – | – |
according to the US BTS · March 2025 → March 2026
On-time departures by month
Short series — AS153 has only 10 months so far. Enough to show the level now, not enough to read a trend.
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 periods10 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | – | – | – |
| February | – | – | – |
| March | 100.0% | 33.3% | ▼ 66.7% |
| April | 91.7% | – | – |
| May | 71.0% | – | – |
| June | 72.7% | – | – |
| July | – | – | – |
| August | 100.0% | – | – |
| September | 96.7% | – | – |
| October | 87.5% | – | in progress |
| November | 100.0% | – | – |
| December | 68.8% | – | – |
according to the US BTS · March 2025 → March 2026
Average departure delay by month
Short series — AS153 has only 10 months so far. Enough to show the level now, not enough to read a trend.
Months without data are left blank.
according to the US BTS · March 2025 → March 2026
Cancelled departures by month
Short series — AS153 has only 10 months so far. Enough to show the level now, not enough to read a trend.
Months without data are left blank.
The most recent periods10 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | – | – | – |
| February | – | – | – |
| March | 0 | 0 | – |
| April | 0 | – | – |
| May | 0 | – | – |
| June | 0 | – | – |
| July | – | – | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 1 | – | in progress |
| November | 1 | – | – |
| December | 0 | – | – |
according to the US BTS · March 2025 → 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 98.6% 144
- Cancelled 1.4% 2
Share of all recorded flights in the period, all legs. · Mar 9, 2025 → Mar 18, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
3| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| SFO SEA San Francisco International Airport – Seattle–Tacoma International Airport | 1,093 | 10.8 min | 75.0% | 52 |
| PDX SEA Portland International Airport – Seattle–Tacoma International Airport | 208 | -0.8 min | 95.6% | 45 |
| KOA SEA Ellison Onizuka Kona International Airport at Keāhole – Seattle–Tacoma International Airport | 4,327 | 5.5 min | 87.5% | 42 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| March 2025 | 2 | 2 | 100.0% | 0 |
| April 2025 | 12 | 12 | 91.7% | 0 |
| May 2025 | 31 | 31 | 71.0% | 0 |
| June 2025 | 11 | 11 | 72.7% | 0 |
| August 2025 | 12 | 12 | 100.0% | 0 |
| September 2025 | 30 | 30 | 96.7% | 0 |
| October 2025 | 9 | 8 | 87.5% | 1 |
| November 2025 | 20 | 19 | 100.0% | 1 |
| December 2025 | 16 | 16 | 68.8% | 0 |
| March 2026 | 3 | 3 | 33.3% | 0 |