AS523
AS523 (Alaska Airlines) is a multi-stop service on 4 routes, busiest Reno to Seattle. Of 519 departures recorded from October 2024 to July 2026, 76.1% left on time, according to the US BTS.
- On-time departures76.1%of 519 flights
- Average delay12.0 min
- July 202614▼ 53.3%vs July 2025
- Cancelled1.5%
- Legs flown under this number4
Recorded departures by month
All legs under this number combined; see the leg table.
The most recent periods19 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 31 | 30 | ▼ 3.2% |
| February | 28 | 28 | 0.0% |
| March | 30 | 16 | ▼ 46.7% |
| April | 22 | 6 | ▼ 72.7% |
| May | 19 | 28 | ▲ 47.4% |
| June | 30 | 9 | ▼ 70.0% |
| July | 30 | 14 | ▼ 53.3% |
| August | 29 | – | – |
| September | 26 | – | – |
| October | 21 | – | in progress |
| November | 29 | – | – |
| December | 25 | – | – |
| Year to date (Jan–Jul) | 190 | 131 | ▼ 31.1% |
according to the US BTS · October 2024 → 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 periods19 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 74.2% | 83.3% | ▲ 12.3% |
| February | 85.2% | 100.0% | ▲ 17.4% |
| March | 70.0% | 75.0% | ▲ 7.1% |
| April | 76.2% | 100.0% | ▲ 31.3% |
| May | 55.6% | 82.1% | ▲ 47.8% |
| June | 53.3% | 88.9% | ▲ 66.7% |
| July | 42.9% | 57.1% | ▲ 33.3% |
| August | 58.6% | – | – |
| September | 95.8% | – | – |
| October | 90.5% | – | in progress |
| November | 82.8% | – | – |
| December | 75.0% | – | – |
| Year-to-date average (Jan–Jul) | 65.3% | 83.8% | ▲ 28.2% |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
The most recent periods19 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | 1 | 0 | ▼ 100.0% |
| March | 0 | 0 | – |
| April | 1 | 0 | ▼ 100.0% |
| May | 1 | 0 | ▼ 100.0% |
| June | 0 | 0 | – |
| July | 2 | 0 | ▼ 100.0% |
| August | 0 | – | – |
| September | 2 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 1 | – | – |
| Year to date (Jan–Jul) | 5 | 0 | ▼ 100.0% |
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 98.5% 511
- Cancelled 1.5% 8
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 31, 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 |
|---|---|---|---|---|
| RNO SEA Reno Tahoe International Airport – Seattle–Tacoma International Airport | 907 | 15.9 min | 72.3% | 325 |
| SJC SEA Mineta San Jose International Airport – Seattle–Tacoma International Airport | 1,122 | 3.8 min | 85.2% | 177 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 17 | 17 | 82.4% | 0 |
| November 2024 | 21 | 21 | 90.5% | 0 |
| December 2024 | 30 | 30 | 80.0% | 0 |
| January 2025 | 31 | 31 | 74.2% | 0 |
| February 2025 | 28 | 27 | 85.2% | 1 |
| March 2025 | 30 | 30 | 70.0% | 0 |
| April 2025 | 22 | 21 | 76.2% | 1 |
| May 2025 | 19 | 18 | 55.6% | 1 |
| June 2025 | 30 | 30 | 53.3% | 0 |
| July 2025 | 30 | 28 | 42.9% | 2 |
| August 2025 | 29 | 29 | 58.6% | 0 |
| September 2025 | 26 | 24 | 95.8% | 2 |
| October 2025 | 21 | 21 | 90.5% | 0 |
| November 2025 | 29 | 29 | 82.8% | 0 |
| December 2025 | 25 | 24 | 75.0% | 1 |
| January 2026 | 30 | 30 | 83.3% | 0 |
| February 2026 | 28 | 28 | 100.0% | 0 |
| March 2026 | 16 | 16 | 75.0% | 0 |
| April 2026 | 6 | 6 | 100.0% | 0 |
| May 2026 | 28 | 28 | 82.1% | 0 |
| June 2026 | 9 | 9 | 88.9% | 0 |
| July 2026 | 14 | 14 | 57.1% | 0 |