AS121
AS121 (Alaska Airlines) is a multi-stop service on 2 routes, busiest Portland to Burbank. Of 593 departures recorded from October 2024 to July 2026, 89.9% left on time, according to the US BTS.
- On-time departures89.9%of 593 flights
- Average delay4.0 min
- July 202631▲ 0.0%vs July 2025
- Cancelled1.2%
- 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 | 30 | 31 | ▲ 3.3% |
| February | 26 | 28 | ▲ 7.7% |
| March | 26 | 31 | ▲ 19.2% |
| April | 27 | 27 | 0.0% |
| May | 31 | 12 | ▼ 61.3% |
| June | 30 | 21 | ▼ 30.0% |
| July | 31 | 31 | 0.0% |
| August | 29 | – | – |
| September | 26 | – | – |
| October | 27 | – | in progress |
| November | 29 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 201 | 181 | ▼ 10.0% |
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 | 96.7% | 83.9% | ▼ 13.2% |
| February | 96.2% | 89.3% | ▼ 7.1% |
| March | 100.0% | 90.3% | ▼ 9.7% |
| April | 100.0% | 92.0% | ▼ 8.0% |
| May | 96.8% | 91.7% | ▼ 5.3% |
| June | 86.7% | 71.4% | ▼ 17.6% |
| July | 90.0% | 60.0% | ▼ 33.3% |
| August | 96.6% | – | – |
| September | 88.5% | – | – |
| October | 92.6% | – | in progress |
| November | 96.6% | – | – |
| December | 80.7% | – | – |
| Year-to-date average (Jan–Jul) | 95.2% | 82.7% | ▼ 13.2% |
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 | 1 | 0 | ▼ 100.0% |
| April | 1 | 2 | ▲ 100.0% |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 1 | 1 | 0.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 3 | 3 | 0.0% |
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 98.8% 586
- Cancelled 1.2% 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
2| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| PDX BUR Portland International Airport – Hollywood Burbank/Bob Hope Airport | 1,316 | 0.7 min | 92.5% | 523 |
| SEA HNL Seattle–Tacoma International Airport – Daniel K. Inouye International Airport | 4,308 | 28.8 min | 71.0% | 70 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 19 | 94.7% | 1 |
| November 2024 | 22 | 22 | 95.5% | 0 |
| December 2024 | 27 | 27 | 92.6% | 0 |
| January 2025 | 30 | 30 | 96.7% | 0 |
| February 2025 | 26 | 26 | 96.2% | 0 |
| March 2025 | 26 | 25 | 100.0% | 1 |
| April 2025 | 27 | 26 | 100.0% | 1 |
| May 2025 | 31 | 31 | 96.8% | 0 |
| June 2025 | 30 | 30 | 86.7% | 0 |
| July 2025 | 31 | 30 | 90.0% | 1 |
| August 2025 | 29 | 29 | 96.6% | 0 |
| September 2025 | 26 | 26 | 88.5% | 0 |
| October 2025 | 27 | 27 | 92.6% | 0 |
| November 2025 | 29 | 29 | 96.6% | 0 |
| December 2025 | 31 | 31 | 80.7% | 0 |
| January 2026 | 31 | 31 | 83.9% | 0 |
| February 2026 | 28 | 28 | 89.3% | 0 |
| March 2026 | 31 | 31 | 90.3% | 0 |
| April 2026 | 27 | 25 | 92.0% | 2 |
| May 2026 | 12 | 12 | 91.7% | 0 |
| June 2026 | 21 | 21 | 71.4% | 0 |
| July 2026 | 31 | 30 | 60.0% | 1 |