AS508
AS508 (Alaska Airlines) is a multi-stop service on 2 routes, busiest Seattle to Cincinnati. Of 967 departures recorded from October 2024 to July 2026, 77.6% left on time, according to the US BTS.
- On-time departures77.6%of 967 flights
- Average delay9.8 min
- July 202661▲ 0.0%vs July 2025
- Cancelled0.8%
- Legs flown under this number2
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 | 24 | 37 | ▲ 54.2% |
| February | 20 | 28 | ▲ 40.0% |
| March | 25 | 44 | ▲ 76.0% |
| April | 30 | 60 | ▲ 100.0% |
| May | 31 | 62 | ▲ 100.0% |
| June | 49 | 60 | ▲ 22.4% |
| July | 61 | 61 | 0.0% |
| August | 62 | – | – |
| September | 60 | – | – |
| October | 62 | – | in progress |
| November | 58 | – | – |
| December | 58 | – | – |
| Year to date (Jan–Jul) | 240 | 352 | ▲ 46.7% |
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 | 78.3% | 68.6% | ▼ 12.4% |
| February | 65.0% | 82.1% | ▲ 26.4% |
| March | 88.0% | 76.7% | ▼ 12.8% |
| April | 93.3% | 75.0% | ▼ 19.6% |
| May | 77.4% | 75.4% | ▼ 2.6% |
| June | 73.5% | 80.0% | ▲ 8.9% |
| July | 66.7% | 88.5% | ▲ 32.8% |
| August | 72.6% | – | – |
| September | 81.7% | – | – |
| October | 86.7% | – | in progress |
| November | 79.3% | – | – |
| December | 65.5% | – | – |
| Year-to-date average (Jan–Jul) | 77.5% | 78.1% | ▲ 0.8% |
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 | 1 | 2 | ▲ 100.0% |
| February | 0 | 0 | – |
| March | 0 | 1 | – |
| April | 0 | 0 | – |
| May | 0 | 1 | – |
| June | 0 | 0 | – |
| July | 1 | 0 | ▼ 100.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 2 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 2 | 4 | ▲ 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 99.2% 959
- Cancelled 0.8% 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 |
|---|---|---|---|---|
| SEA CVG Seattle–Tacoma International Airport – Cincinnati Northern Kentucky International Airport | 3,154 | 7.7 min | 79.4% | 627 |
| CVG SEA Cincinnati Northern Kentucky International Airport – Seattle–Tacoma International Airport | 3,154 | 13.8 min | 74.2% | 340 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 90.0% | 0 |
| November 2024 | 29 | 29 | 86.2% | 0 |
| December 2024 | 26 | 26 | 65.4% | 0 |
| January 2025 | 24 | 23 | 78.3% | 1 |
| February 2025 | 20 | 20 | 65.0% | 0 |
| March 2025 | 25 | 25 | 88.0% | 0 |
| April 2025 | 30 | 30 | 93.3% | 0 |
| May 2025 | 31 | 31 | 77.4% | 0 |
| June 2025 | 49 | 49 | 73.5% | 0 |
| July 2025 | 61 | 60 | 66.7% | 1 |
| August 2025 | 62 | 62 | 72.6% | 0 |
| September 2025 | 60 | 60 | 81.7% | 0 |
| October 2025 | 62 | 60 | 86.7% | 2 |
| November 2025 | 58 | 58 | 79.3% | 0 |
| December 2025 | 58 | 58 | 65.5% | 0 |
| January 2026 | 37 | 35 | 68.6% | 2 |
| February 2026 | 28 | 28 | 82.1% | 0 |
| March 2026 | 44 | 43 | 76.7% | 1 |
| April 2026 | 60 | 60 | 75.0% | 0 |
| May 2026 | 62 | 61 | 75.4% | 1 |
| June 2026 | 60 | 60 | 80.0% | 0 |
| July 2026 | 61 | 61 | 88.5% | 0 |