AS615
AS615 (Alaska Airlines) is a multi-stop service on 7 routes, busiest Denver to Seattle. Of 414 departures recorded from November 2024 to July 2026, 66.5% left on time, according to the US BTS.
- On-time departures66.5%of 414 flights
- Average delay17.6 min
- July 202630▲ 20.0%vs July 2025
- Cancelled1.2%
- Legs flown under this number7
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 | 26 | 5 | ▼ 80.8% |
| February | 28 | 10 | ▼ 64.3% |
| March | 28 | 23 | ▼ 17.9% |
| April | 24 | 25 | ▲ 4.2% |
| May | 12 | 19 | ▲ 58.3% |
| June | 16 | 30 | ▲ 87.5% |
| July | 25 | 30 | ▲ 20.0% |
| August | 26 | – | – |
| September | 26 | – | – |
| October | 8 | – | in progress |
| November | 29 | – | – |
| December | 19 | – | – |
| Year to date (Jan–Jul) | 159 | 142 | ▼ 10.7% |
according to the US BTS · November 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 | 84.6% | 60.0% | ▼ 29.1% |
| February | 53.6% | 80.0% | ▲ 49.3% |
| March | 71.4% | 90.9% | ▲ 27.3% |
| April | 39.1% | 88.0% | ▲ 124.9% |
| May | 50.0% | 84.2% | ▲ 68.4% |
| June | 42.9% | 90.0% | ▲ 110.0% |
| July | 25.0% | 73.3% | ▲ 193.3% |
| August | 34.6% | – | – |
| September | 80.8% | – | – |
| October | 62.5% | – | in progress |
| November | 72.4% | – | – |
| December | 47.4% | – | – |
| Year-to-date average (Jan–Jul) | 52.4% | 80.9% | ▲ 54.5% |
according to the US BTS · November 2024 → July 2026
Average departure delay by month
according to the US BTS · November 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 | 0 | 0 | – |
| March | 0 | 1 | – |
| April | 1 | 0 | ▼ 100.0% |
| May | 0 | 0 | – |
| June | 2 | 0 | ▼ 100.0% |
| July | 1 | 0 | ▼ 100.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 4 | 1 | ▼ 75.0% |
according to the US BTS · November 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 98.8% 409
- Cancelled 1.2% 5
Share of all recorded flights in the period, all legs. · Nov 22, 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 |
|---|---|---|---|---|
| DEN SEA Denver International Airport – Seattle–Tacoma International Airport | 1,645 | 23.7 min | 56.7% | 272 |
| SEA STL Seattle–Tacoma International Airport – St. Louis Lambert International Airport | 2,744 | 5.0 min | 86.4% | 133 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| November 2024 | 2 | 2 | 100.0% | 0 |
| December 2024 | 3 | 3 | 100.0% | 0 |
| January 2025 | 26 | 26 | 84.6% | 0 |
| February 2025 | 28 | 28 | 53.6% | 0 |
| March 2025 | 28 | 28 | 71.4% | 0 |
| April 2025 | 24 | 23 | 39.1% | 1 |
| May 2025 | 12 | 12 | 50.0% | 0 |
| June 2025 | 16 | 14 | 42.9% | 2 |
| July 2025 | 25 | 24 | 25.0% | 1 |
| August 2025 | 26 | 26 | 34.6% | 0 |
| September 2025 | 26 | 26 | 80.8% | 0 |
| October 2025 | 8 | 8 | 62.5% | 0 |
| November 2025 | 29 | 29 | 72.4% | 0 |
| December 2025 | 19 | 19 | 47.4% | 0 |
| January 2026 | 5 | 5 | 60.0% | 0 |
| February 2026 | 10 | 10 | 80.0% | 0 |
| March 2026 | 23 | 22 | 90.9% | 1 |
| April 2026 | 25 | 25 | 88.0% | 0 |
| May 2026 | 19 | 19 | 84.2% | 0 |
| June 2026 | 30 | 30 | 90.0% | 0 |
| July 2026 | 30 | 30 | 73.3% | 0 |