AS1311
AS1311 (Alaska Airlines) is a multi-stop service on 3 routes, busiest San Jose to Seattle. Of 398 departures recorded from December 2024 to July 2026, 92.8% left on time, according to the US BTS.
- On-time departures92.8%of 398 flights
- Average delay-2.4 min
- July 202631▲ 14.8%vs July 2025
- Cancelled2.3%
- 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 periods17 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 1 | 31 | ▲ 3,000.0% |
| February | – | 24 | – |
| March | – | 26 | – |
| April | 8 | 28 | ▲ 250.0% |
| May | 14 | 27 | ▲ 92.9% |
| June | 16 | 30 | ▲ 87.5% |
| July | 27 | 31 | ▲ 14.8% |
| August | 26 | – | – |
| September | 25 | – | – |
| October | 23 | – | in progress |
| November | 26 | – | – |
| December | 31 | – | – |
according to the US BTS · December 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 periods17 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 100.0% | 86.7% | ▼ 13.3% |
| February | – | 95.8% | – |
| March | – | 92.0% | – |
| April | 100.0% | 96.4% | ▼ 3.6% |
| May | 100.0% | 96.3% | ▼ 3.7% |
| June | 73.3% | 90.0% | ▲ 22.7% |
| July | 92.0% | 90.3% | ▼ 1.8% |
| August | 96.0% | – | – |
| September | 88.0% | – | – |
| October | 100.0% | – | in progress |
| November | 88.5% | – | – |
| December | 100.0% | – | – |
according to the US BTS · December 2024 → July 2026
Average departure delay by month
Months without data are left blank.
according to the US BTS · December 2024 → July 2026
Cancelled departures by month
Months without data are left blank.
The most recent periods17 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 1 | – |
| February | – | 0 | – |
| March | – | 1 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 1 | 0 | ▼ 100.0% |
| July | 2 | 0 | ▼ 100.0% |
| August | 1 | – | – |
| September | 0 | – | – |
| October | 1 | – | in progress |
| November | 0 | – | – |
| December | 2 | – | – |
according to the US BTS · December 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 97.7% 389
- Cancelled 2.3% 9
Share of all recorded flights in the period, all legs. · Dec 7, 2024 → Jul 31, 2026
Legs flown under this number
1| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| SJC SEA Mineta San Jose International Airport – Seattle–Tacoma International Airport | 1,122 | -2.2 min | 92.4% | 365 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| December 2024 | 4 | 4 | 100.0% | 0 |
| January 2025 | 1 | 1 | 100.0% | 0 |
| April 2025 | 8 | 8 | 100.0% | 0 |
| May 2025 | 14 | 14 | 100.0% | 0 |
| June 2025 | 16 | 15 | 73.3% | 1 |
| July 2025 | 27 | 25 | 92.0% | 2 |
| August 2025 | 26 | 25 | 96.0% | 1 |
| September 2025 | 25 | 25 | 88.0% | 0 |
| October 2025 | 23 | 22 | 100.0% | 1 |
| November 2025 | 26 | 26 | 88.5% | 0 |
| December 2025 | 31 | 29 | 100.0% | 2 |
| January 2026 | 31 | 30 | 86.7% | 1 |
| February 2026 | 24 | 24 | 95.8% | 0 |
| March 2026 | 26 | 25 | 92.0% | 1 |
| April 2026 | 28 | 28 | 96.4% | 0 |
| May 2026 | 27 | 27 | 96.3% | 0 |
| June 2026 | 30 | 30 | 90.0% | 0 |
| July 2026 | 31 | 31 | 90.3% | 0 |