AS1423
AS1423 (Alaska Airlines) is a multi-stop service on 3 routes, busiest Phoenix to Seattle. Of 186 departures recorded from October 2025 to June 2026, 84.2% left on time, according to the US BTS.
- On-time departures84.2%of 186 flights
- Average delay6.4 min
- June 20269
- Cancelled1.6%
- Legs flown under this number3
Recorded departures by month
Short series — AS1423 has only 9 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 periods9 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | – | 6 | – |
| February | – | 17 | – |
| March | – | 31 | – |
| April | – | 30 | – |
| May | – | 31 | – |
| June | – | 9 | – |
| July | – | – | – |
| August | – | – | – |
| September | – | – | – |
| October | 5 | – | in progress |
| November | 26 | – | – |
| December | 31 | – | – |
according to the US BTS · October 2025 → June 2026
On-time departures by month
Short series — AS1423 has only 9 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 periods9 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | – | 83.3% | – |
| February | – | 76.5% | – |
| March | – | 83.3% | – |
| April | – | 83.3% | – |
| May | – | 100.0% | – |
| June | – | 88.9% | – |
| July | – | – | – |
| August | – | – | – |
| September | – | – | – |
| October | 60.0% | – | in progress |
| November | 87.5% | – | – |
| December | 74.2% | – | – |
according to the US BTS · October 2025 → June 2026
Average departure delay by month
Short series — AS1423 has only 9 months so far. Enough to show the level now, not enough to read a trend.
according to the US BTS · October 2025 → June 2026
Cancelled departures by month
Short series — AS1423 has only 9 months so far. Enough to show the level now, not enough to read a trend.
The most recent periods9 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | – | 0 | – |
| February | – | 0 | – |
| March | – | 1 | – |
| April | – | 0 | – |
| May | – | 0 | – |
| June | – | 0 | – |
| July | – | – | – |
| August | – | – | – |
| September | – | – | – |
| October | 0 | – | in progress |
| November | 2 | – | – |
| December | 0 | – | – |
according to the US BTS · October 2025 → June 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 98.4% 183
- Cancelled 1.6% 3
Share of all recorded flights in the period, all legs. · Oct 26, 2025 → Jun 9, 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 |
|---|---|---|---|---|
| PHX SEA Phoenix Sky Harbor International Airport – Seattle–Tacoma International Airport | 1,782 | 4.4 min | 87.2% | 118 |
| KOA SEA Ellison Onizuka Kona International Airport at Keāhole – Seattle–Tacoma International Airport | 4,327 | 10.6 min | 79.3% | 60 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2025 | 5 | 5 | 60.0% | 0 |
| November 2025 | 26 | 24 | 87.5% | 2 |
| December 2025 | 31 | 31 | 74.2% | 0 |
| January 2026 | 6 | 6 | 83.3% | 0 |
| February 2026 | 17 | 17 | 76.5% | 0 |
| March 2026 | 31 | 30 | 83.3% | 1 |
| April 2026 | 30 | 30 | 83.3% | 0 |
| May 2026 | 31 | 31 | 100.0% | 0 |
| June 2026 | 9 | 9 | 88.9% | 0 |