AS1439
AS1439 (Alaska Airlines) is a multi-stop service on 4 routes, busiest Seattle to Boise. Of 69 departures recorded from March 2026 to July 2026, 72.5% left on time, according to the US BTS.
- On-time departures72.5%of 69 flights
- Average delay15.2 min
- July 20263
- Cancelled0.0%
- Legs flown under this number4
Recorded departures by month
Short series — AS1439 has only 5 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.
The most recent periods5 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | – | – | – |
| February | – | – | – |
| March | – | 14 | – |
| April | – | 21 | – |
| May | – | 19 | – |
| June | – | 12 | – |
| July | – | 3 | – |
| August | – | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | – | – | – |
| December | – | – | – |
according to the US BTS · March 2026 → July 2026
On-time departures by month
Short series — AS1439 has only 5 months so far. Enough to show the level now, not enough to read a trend.
On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.
The most recent periods5 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | – | – | – |
| February | – | – | – |
| March | – | 85.7% | – |
| April | – | 76.2% | – |
| May | – | 73.7% | – |
| June | – | 41.7% | – |
| July | – | 100.0% | – |
| August | – | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | – | – | – |
| December | – | – | – |
according to the US BTS · March 2026 → July 2026
Average departure delay by month
Short series — AS1439 has only 5 months so far. Enough to show the level now, not enough to read a trend.
according to the US BTS · March 2026 → July 2026
Cancelled departures by month
Short series — AS1439 has only 5 months so far. Enough to show the level now, not enough to read a trend.
The most recent periods5 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | – | – | – |
| February | – | – | – |
| March | – | 0 | – |
| April | – | 0 | – |
| May | – | 0 | – |
| June | – | 0 | – |
| July | – | 0 | – |
| August | – | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | – | – | – |
| December | – | – | – |
according to the US BTS · March 2026 → 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 100.0% 69
- Cancelled 0.0% 0
Share of all recorded flights in the period, all legs. · Mar 18, 2026 → Jul 26, 2026
Legs flown under this number
1| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| SEA BOI Seattle–Tacoma International Airport – Boise Air Terminal/Gowen Field | 641 | 12.3 min | 80.0% | 35 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| March 2026 | 14 | 14 | 85.7% | 0 |
| April 2026 | 21 | 21 | 76.2% | 0 |
| May 2026 | 19 | 19 | 73.7% | 0 |
| June 2026 | 12 | 12 | 41.7% | 0 |
| July 2026 | 3 | 3 | 100.0% | 0 |