AS510
AS510 (Alaska Airlines) is a multi-stop service on 12 routes, busiest Salt Lake City to Seattle. Of 452 departures recorded from October 2024 to July 2026, 79.8% left on time, according to the US BTS.
- On-time departures79.8%of 452 flights
- Average delay9.0 min
- July 202631▲ 3.3%vs July 2025
- Cancelled1.6%
- Legs flown under this number12
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods18 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 31 | 10 | ▼ 67.7% |
| February | 26 | 4 | ▼ 84.6% |
| March | 14 | 7 | ▼ 50.0% |
| April | 9 | 15 | ▲ 66.7% |
| May | 31 | 30 | ▼ 3.2% |
| June | 30 | 30 | 0.0% |
| July | 30 | 31 | ▲ 3.3% |
| August | 19 | – | – |
| September | – | – | – |
| October | 25 | – | in progress |
| November | 24 | – | – |
| December | 8 | – | – |
| Year to date (Jan–Jul) | 171 | 127 | ▼ 25.7% |
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 periods18 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 77.4% | 100.0% | ▲ 29.2% |
| February | 62.5% | 100.0% | ▲ 60.0% |
| March | 92.9% | 85.7% | ▼ 7.7% |
| April | 88.9% | 100.0% | ▲ 12.5% |
| May | 76.7% | 83.3% | ▲ 8.7% |
| June | 53.3% | 70.0% | ▲ 31.3% |
| July | 78.6% | 87.1% | ▲ 10.9% |
| August | 72.2% | – | – |
| September | – | – | – |
| October | 70.8% | – | in progress |
| November | 91.7% | – | – |
| December | 100.0% | – | – |
| Year-to-date average (Jan–Jul) | 75.7% | 89.4% | ▲ 18.1% |
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 periods18 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | 2 | 0 | ▼ 100.0% |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 1 | 0 | ▼ 100.0% |
| June | 0 | 0 | – |
| July | 2 | 0 | ▼ 100.0% |
| August | 1 | – | – |
| September | – | – | – |
| October | 1 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| 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% 445
- Cancelled 1.5% 7
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
4| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| SLC SEA Salt Lake City International Airport – Seattle–Tacoma International Airport | 1,107 | 11.8 min | 74.9% | 245 |
| MSP SEA Minneapolis–Saint Paul International Airport / Wold–Chamberlain Field – Seattle–Tacoma International Airport | 2,245 | 7.5 min | 78.9% | 52 |
| SEA PSP Seattle–Tacoma International Airport – Palm Springs International Airport | 1,590 | 4.8 min | 85.4% | 48 |
| RSW SEA Southwest Florida International Airport – Seattle–Tacoma International Airport | 4,218 | 1.0 min | 94.1% | 34 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 90.0% | 0 |
| November 2024 | 28 | 28 | 89.3% | 0 |
| December 2024 | 30 | 30 | 76.7% | 0 |
| January 2025 | 31 | 31 | 77.4% | 0 |
| February 2025 | 26 | 24 | 62.5% | 2 |
| March 2025 | 14 | 14 | 92.9% | 0 |
| April 2025 | 9 | 9 | 88.9% | 0 |
| May 2025 | 31 | 30 | 76.7% | 1 |
| June 2025 | 30 | 30 | 53.3% | 0 |
| July 2025 | 30 | 28 | 78.6% | 2 |
| August 2025 | 19 | 18 | 72.2% | 1 |
| October 2025 | 25 | 24 | 70.8% | 1 |
| November 2025 | 24 | 24 | 91.7% | 0 |
| December 2025 | 8 | 8 | 100.0% | 0 |
| January 2026 | 10 | 10 | 100.0% | 0 |
| February 2026 | 4 | 4 | 100.0% | 0 |
| March 2026 | 7 | 7 | 85.7% | 0 |
| April 2026 | 15 | 15 | 100.0% | 0 |
| May 2026 | 30 | 30 | 83.3% | 0 |
| June 2026 | 30 | 30 | 70.0% | 0 |
| July 2026 | 31 | 31 | 87.1% | 0 |