AS591
AS591 (Alaska Airlines) is a multi-stop service on 3 routes, busiest San Francisco to Seattle. Of 300 departures recorded from October 2024 to July 2026, 70.0% left on time, according to the US BTS.
- On-time departures70.0%of 300 flights
- Average delay16.2 min
- July 202630▲ 11.1%vs July 2025
- Cancelled1.0%
- Legs flown under this number3
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods14 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | – | 25 | – |
| February | – | 27 | – |
| March | – | 16 | – |
| April | – | 9 | – |
| May | 1 | 12 | ▲ 1,100.0% |
| June | 16 | 21 | ▲ 31.3% |
| July | 27 | 30 | ▲ 11.1% |
| August | 16 | – | – |
| September | – | – | – |
| October | 24 | – | in progress |
| November | 26 | – | – |
| December | 25 | – | – |
according to the US BTS · October 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 periods14 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | – | 72.0% | – |
| February | – | 85.2% | – |
| March | – | 80.0% | – |
| April | – | 66.7% | – |
| May | 0.0% | 75.0% | – |
| June | 68.8% | 66.7% | ▼ 3.0% |
| July | 61.5% | 63.3% | ▲ 2.9% |
| August | 46.7% | – | – |
| September | – | – | – |
| October | 75.0% | – | in progress |
| November | 61.5% | – | – |
| December | 64.0% | – | – |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
Months without data are left blank.
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
Months without data are left blank.
The most recent periods14 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | – | 0 | – |
| February | – | 0 | – |
| March | – | 1 | – |
| April | – | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 1 | 0 | ▼ 100.0% |
| August | 1 | – | – |
| September | – | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
according to the US BTS · October 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 99.0% 297
- Cancelled 1.0% 3
Share of all recorded flights in the period, all legs. · Oct 27, 2024 → Jul 31, 2026
Legs flown under this number
1| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| SFO SEA San Francisco International Airport – Seattle–Tacoma International Airport | 1,093 | 17.5 min | 68.3% | 274 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 4 | 4 | 100.0% | 0 |
| November 2024 | 21 | 21 | 90.5% | 0 |
| May 2025 | 1 | 1 | 0.0% | 0 |
| June 2025 | 16 | 16 | 68.8% | 0 |
| July 2025 | 27 | 26 | 61.5% | 1 |
| August 2025 | 16 | 15 | 46.7% | 1 |
| October 2025 | 24 | 24 | 75.0% | 0 |
| November 2025 | 26 | 26 | 61.5% | 0 |
| December 2025 | 25 | 25 | 64.0% | 0 |
| January 2026 | 25 | 25 | 72.0% | 0 |
| February 2026 | 27 | 27 | 85.2% | 0 |
| March 2026 | 16 | 15 | 80.0% | 1 |
| April 2026 | 9 | 9 | 66.7% | 0 |
| May 2026 | 12 | 12 | 75.0% | 0 |
| June 2026 | 21 | 21 | 66.7% | 0 |
| July 2026 | 30 | 30 | 63.3% | 0 |