AS255
AS255 (Alaska Airlines) is a multi-stop service on 10 routes, busiest San Diego to Boston. Of 214 departures recorded from November 2024 to July 2026, 78.1% left on time, according to the US BTS.
- On-time departures78.1%of 214 flights
- Average delay6.9 min
- July 202630
- Cancelled1.9%
- Legs flown under this number10
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods16 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 4 | 14 | ▲ 250.0% |
| February | 3 | 12 | ▲ 300.0% |
| March | 2 | 7 | ▲ 250.0% |
| April | 1 | 9 | ▲ 800.0% |
| May | 1 | 30 | ▲ 2,900.0% |
| June | – | 30 | – |
| July | – | 30 | – |
| August | 1 | – | – |
| September | – | – | – |
| October | 22 | – | in progress |
| November | 4 | – | – |
| December | 13 | – | – |
according to the US BTS · November 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 periods16 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 50.0% | 64.3% | ▲ 28.6% |
| February | 100.0% | 91.7% | ▼ 8.3% |
| March | 100.0% | 57.1% | ▼ 42.9% |
| April | 100.0% | 100.0% | 0.0% |
| May | 100.0% | 86.7% | ▼ 13.3% |
| June | – | 50.0% | – |
| July | – | 73.3% | – |
| August | 100.0% | – | – |
| September | – | – | – |
| October | 95.2% | – | in progress |
| November | 100.0% | – | – |
| December | 91.7% | – | – |
according to the US BTS · November 2024 → July 2026
Average departure delay by month
Months without data are left blank.
according to the US BTS · November 2024 → July 2026
Cancelled departures by month
Months without data are left blank.
The most recent periods16 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | – | 0 | – |
| July | – | 0 | – |
| August | 0 | – | – |
| September | – | – | – |
| October | 1 | – | in progress |
| November | 0 | – | – |
| December | 1 | – | – |
according to the US BTS · November 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 98.1% 210
- Cancelled 1.9% 4
Share of all recorded flights in the period, all legs. · Nov 22, 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 |
|---|---|---|---|---|
| SAN BOS San Diego International Airport – Boston Logan International Airport | 4,156 | 14.7 min | 65.8% | 79 |
| ANC KOA Ted Stevens Anchorage International Airport – Ellison Onizuka Kona International Airport at Keāhole | 4,632 | 5.6 min | 79.6% | 50 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| November 2024 | 8 | 7 | 100.0% | 1 |
| December 2024 | 23 | 22 | 72.7% | 1 |
| January 2025 | 4 | 4 | 50.0% | 0 |
| February 2025 | 3 | 3 | 100.0% | 0 |
| March 2025 | 2 | 2 | 100.0% | 0 |
| April 2025 | 1 | 1 | 100.0% | 0 |
| May 2025 | 1 | 1 | 100.0% | 0 |
| August 2025 | 1 | 1 | 100.0% | 0 |
| October 2025 | 22 | 21 | 95.2% | 1 |
| November 2025 | 4 | 4 | 100.0% | 0 |
| December 2025 | 13 | 12 | 91.7% | 1 |
| January 2026 | 14 | 14 | 64.3% | 0 |
| February 2026 | 12 | 12 | 91.7% | 0 |
| March 2026 | 7 | 7 | 57.1% | 0 |
| April 2026 | 9 | 9 | 100.0% | 0 |
| May 2026 | 30 | 30 | 86.7% | 0 |
| June 2026 | 30 | 30 | 50.0% | 0 |
| July 2026 | 30 | 30 | 73.3% | 0 |