AS1278
AS1278 (Alaska Airlines) is a multi-stop service on 3 routes, busiest Seattle to Ontario. Of 59 departures recorded from October 2024 to August 2025, 70.2% left on time, according to the US BTS.
- On-time departures70.2%of 59 flights
- Average delay10.4 min
- August 202519
- Cancelled3.4%
- Legs flown under this number3
Recorded departures by month
Short series — AS1278 has only 4 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 periods4 periods
| Period | Departures 2024 | Departures 2025 | Change vs last year |
|---|---|---|---|
| January | – | – | – |
| February | – | – | – |
| March | – | – | – |
| April | – | – | – |
| May | – | – | – |
| June | – | – | – |
| July | – | 31 | – |
| August | – | 19 | – |
| September | – | – | – |
| October | 8 | – | – |
| November | – | – | – |
| December | 1 | – | – |
according to the US BTS · October 2024 → August 2025
On-time departures by month
Short series — AS1278 has only 4 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 periods4 periods
| Period | On time 2024 | On time 2025 | Change vs last year |
|---|---|---|---|
| January | – | – | – |
| February | – | – | – |
| March | – | – | – |
| April | – | – | – |
| May | – | – | – |
| June | – | – | – |
| July | – | 65.5% | – |
| August | – | 63.2% | – |
| September | – | – | – |
| October | 100.0% | – | – |
| November | – | – | – |
| December | 100.0% | – | – |
according to the US BTS · October 2024 → August 2025
Average departure delay by month
Short series — AS1278 has only 4 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 · October 2024 → August 2025
Cancelled departures by month
Short series — AS1278 has only 4 months so far. Enough to show the level now, not enough to read a trend.
Months without data are left blank.
The most recent periods4 periods
| Period | Cancelled 2024 | Cancelled 2025 | Change vs last year |
|---|---|---|---|
| January | – | – | – |
| February | – | – | – |
| March | – | – | – |
| April | – | – | – |
| May | – | – | – |
| June | – | – | – |
| July | – | 2 | – |
| August | – | 0 | – |
| September | – | – | – |
| October | 0 | – | – |
| November | – | – | – |
| December | 0 | – | – |
according to the US BTS · October 2024 → August 2025
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 96.6% 57
- Cancelled 3.4% 2
Share of all recorded flights in the period, all legs. · Oct 13, 2024 → Aug 19, 2025
Legs flown under this number
1| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| SEA ONT Seattle–Tacoma International Airport – Ontario International Airport | 1,540 | 12.8 min | 64.6% | 50 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 8 | 8 | 100.0% | 0 |
| December 2024 | 1 | 1 | 100.0% | 0 |
| July 2025 | 31 | 29 | 65.5% | 2 |
| August 2025 | 19 | 19 | 63.2% | 0 |