AS660
AS660 (Alaska Airlines) is a multi-stop service on 5 routes, busiest Seattle to Missoula. Of 352 departures recorded from October 2024 to July 2026, 83.5% left on time, according to the US BTS.
- On-time departures83.5%of 352 flights
- Average delay3.7 min
- July 202631
- Cancelled2.0%
- Legs flown under this number5
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods10 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 1 | 62 | ▲ 6,100.0% |
| February | – | 22 | – |
| March | – | – | – |
| April | – | 18 | – |
| May | – | 46 | – |
| June | – | 31 | – |
| July | – | 31 | – |
| August | – | – | – |
| September | – | – | – |
| October | 11 | – | in progress |
| November | 58 | – | – |
| December | 62 | – | – |
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 periods10 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 0.0% | 88.1% | – |
| February | – | 90.9% | – |
| March | – | – | – |
| April | – | 83.3% | – |
| May | – | 89.1% | – |
| June | – | 77.4% | – |
| July | – | 80.7% | – |
| August | – | – | – |
| September | – | – | – |
| October | 81.8% | – | in progress |
| November | 85.2% | – | – |
| December | 77.4% | – | – |
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 periods10 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 3 | – |
| February | – | 0 | – |
| March | – | – | – |
| April | – | 0 | – |
| May | – | 0 | – |
| June | – | 0 | – |
| July | – | 0 | – |
| August | – | – | – |
| September | – | – | – |
| October | 0 | – | in progress |
| November | 4 | – | – |
| 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 98.0% 345
- Cancelled 2.0% 7
Share of all recorded flights in the period, all legs. · Oct 29, 2024 → Jul 31, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
3| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| SEA MSO Seattle–Tacoma International Airport – Missoula Montana Airport | 624 | 4.7 min | 83.1% | 145 |
| MSO SEA Missoula Montana Airport – Seattle–Tacoma International Airport | 624 | 1.2 min | 86.4% | 144 |
| SEA ANC Seattle–Tacoma International Airport – Ted Stevens Anchorage International Airport | 2,326 | 6.7 min | 78.9% | 52 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 2 | 2 | 100.0% | 0 |
| November 2024 | 6 | 6 | 100.0% | 0 |
| December 2024 | 2 | 2 | 0.0% | 0 |
| January 2025 | 1 | 1 | 0.0% | 0 |
| October 2025 | 11 | 11 | 81.8% | 0 |
| November 2025 | 58 | 54 | 85.2% | 4 |
| December 2025 | 62 | 62 | 77.4% | 0 |
| January 2026 | 62 | 59 | 88.1% | 3 |
| February 2026 | 22 | 22 | 90.9% | 0 |
| April 2026 | 18 | 18 | 83.3% | 0 |
| May 2026 | 46 | 46 | 89.1% | 0 |
| June 2026 | 31 | 31 | 77.4% | 0 |
| July 2026 | 31 | 31 | 80.7% | 0 |