AS583
AS583 (Alaska Airlines) is a multi-stop service on 7 routes, busiest San Jose to Seattle. Of 156 departures recorded from August 2025 to July 2026, 79.3% left on time, according to the US BTS.
- On-time departures79.3%of 156 flights
- Average delay13.3 min
- July 202623
- Cancelled3.9%
- Legs flown under this number7
Recorded departures by month
All legs under this number combined; see the leg table.
The most recent periods12 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | – | 1 | – |
| February | – | 14 | – |
| March | – | 15 | – |
| April | – | 1 | – |
| May | – | 19 | – |
| June | – | 21 | – |
| July | – | 23 | – |
| August | 12 | – | – |
| September | 30 | – | – |
| October | 4 | – | in progress |
| November | 6 | – | – |
| December | 10 | – | – |
according to the US BTS · August 2025 → July 2026
On-time departures by month
On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.
The most recent periods12 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | – | 100.0% | – |
| February | – | 100.0% | – |
| March | – | 92.3% | – |
| April | – | 100.0% | – |
| May | – | 77.8% | – |
| June | – | 63.2% | – |
| July | – | 40.9% | – |
| August | 91.7% | – | – |
| September | 86.7% | – | – |
| October | 100.0% | – | in progress |
| November | 83.3% | – | – |
| December | 100.0% | – | – |
according to the US BTS · August 2025 → July 2026
Average departure delay by month
according to the US BTS · August 2025 → July 2026
Cancelled departures by month
The most recent periods12 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | – | 0 | – |
| February | – | 0 | – |
| March | – | 2 | – |
| April | – | 0 | – |
| May | – | 1 | – |
| June | – | 2 | – |
| July | – | 1 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
according to the US BTS · August 2025 → 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 96.2% 150
- Cancelled 3.8% 6
Share of all recorded flights in the period, all legs. · Aug 20, 2025 → Jul 31, 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 |
|---|---|---|---|---|
| SJC SEA Mineta San Jose International Airport – Seattle–Tacoma International Airport | 1,122 | 8.3 min | 88.9% | 57 |
| PHX PDX Phoenix Sky Harbor International Airport – Portland International Airport | 1,625 | 8.7 min | 88.9% | 45 |
| ORD SEA Chicago O'Hare International Airport – Seattle–Tacoma International Airport | 2,762 | 38.4 min | 40.6% | 35 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| August 2025 | 12 | 12 | 91.7% | 0 |
| September 2025 | 30 | 30 | 86.7% | 0 |
| October 2025 | 4 | 4 | 100.0% | 0 |
| November 2025 | 6 | 6 | 83.3% | 0 |
| December 2025 | 10 | 10 | 100.0% | 0 |
| January 2026 | 1 | 1 | 100.0% | 0 |
| February 2026 | 14 | 14 | 100.0% | 0 |
| March 2026 | 15 | 13 | 92.3% | 2 |
| April 2026 | 1 | 1 | 100.0% | 0 |
| May 2026 | 19 | 18 | 77.8% | 1 |
| June 2026 | 21 | 19 | 63.2% | 2 |
| July 2026 | 23 | 22 | 40.9% | 1 |