AS535
AS535 (Alaska Airlines) is a multi-stop service on 5 routes, busiest Seattle to Denver. Of 815 departures recorded from October 2024 to July 2026, 73.2% left on time, according to the US BTS.
- On-time departures73.2%of 815 flights
- Average delay17.3 min
- July 202662▲ 0.0%vs July 2025
- Cancelled0.6%
- Legs flown under this number5
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 | 28 | 12 | ▼ 57.1% |
| February | 26 | 1 | ▼ 96.2% |
| March | 29 | 12 | ▼ 58.6% |
| April | 27 | 27 | 0.0% |
| May | 31 | 31 | 0.0% |
| June | 49 | 51 | ▲ 4.1% |
| July | 62 | 62 | 0.0% |
| August | 60 | – | – |
| September | 60 | – | – |
| October | 60 | – | in progress |
| November | 45 | – | – |
| December | 62 | – | – |
| Year to date (Jan–Jul) | 252 | 196 | ▼ 22.2% |
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 | 89.3% | 100.0% | ▲ 12.0% |
| February | 84.6% | 100.0% | ▲ 18.2% |
| March | 89.7% | 50.0% | ▼ 44.2% |
| April | 92.6% | 92.6% | 0.0% |
| May | 48.4% | 87.1% | ▲ 80.0% |
| June | 61.2% | 66.0% | ▲ 7.8% |
| July | 51.7% | 59.7% | ▲ 15.5% |
| August | 75.0% | – | – |
| September | 81.7% | – | – |
| October | 78.3% | – | in progress |
| November | 79.1% | – | – |
| December | 77.4% | – | – |
| Year-to-date average (Jan–Jul) | 73.9% | 79.3% | ▲ 7.3% |
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 | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 1 | – |
| July | 2 | 0 | ▼ 100.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 2 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 2 | 1 | ▼ 50.0% |
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 99.4% 810
- Cancelled 0.6% 5
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 |
|---|---|---|---|---|
| SEA DEN Seattle–Tacoma International Airport – Denver International Airport | 1,645 | 11.4 min | 77.3% | 267 |
| DEN SEA Denver International Airport – Seattle–Tacoma International Airport | 1,645 | 26.8 min | 64.0% | 266 |
| AUS SFO Austin Bergstrom International Airport – San Francisco International Airport | 2,417 | 16.3 min | 75.9% | 232 |
| SEA ANC Seattle–Tacoma International Airport – Ted Stevens Anchorage International Airport | 2,326 | 3.6 min | 87.8% | 49 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 60.0% | 0 |
| November 2024 | 29 | 29 | 79.3% | 0 |
| December 2024 | 31 | 31 | 64.5% | 0 |
| January 2025 | 28 | 28 | 89.3% | 0 |
| February 2025 | 26 | 26 | 84.6% | 0 |
| March 2025 | 29 | 29 | 89.7% | 0 |
| April 2025 | 27 | 27 | 92.6% | 0 |
| May 2025 | 31 | 31 | 48.4% | 0 |
| June 2025 | 49 | 49 | 61.2% | 0 |
| July 2025 | 62 | 60 | 51.7% | 2 |
| August 2025 | 60 | 60 | 75.0% | 0 |
| September 2025 | 60 | 60 | 81.7% | 0 |
| October 2025 | 60 | 60 | 78.3% | 0 |
| November 2025 | 45 | 43 | 79.1% | 2 |
| December 2025 | 62 | 62 | 77.4% | 0 |
| January 2026 | 12 | 12 | 100.0% | 0 |
| February 2026 | 1 | 1 | 100.0% | 0 |
| March 2026 | 12 | 12 | 50.0% | 0 |
| April 2026 | 27 | 27 | 92.6% | 0 |
| May 2026 | 31 | 31 | 87.1% | 0 |
| June 2026 | 51 | 50 | 66.0% | 1 |
| July 2026 | 62 | 62 | 59.7% | 0 |