AS139
AS139 (Alaska Airlines) is a multi-stop service on 7 routes, busiest Los Angeles to Portland. Of 407 departures recorded from October 2024 to April 2026, 82.7% left on time, according to the US BTS.
- On-time departures82.7%of 407 flights
- Average delay6.6 min
- April 202621▲ 0.0%vs April 2025
- Cancelled0.7%
- Legs flown under this number7
Recorded departures by month
All legs under this number combined; see the leg table.
The most recent periods16 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 20 | 29 | ▲ 45.0% |
| February | 22 | 28 | ▲ 27.3% |
| March | 31 | 30 | ▼ 3.2% |
| April | 21 | 21 | 0.0% |
| May | 17 | – | – |
| June | 29 | – | – |
| July | 31 | – | – |
| August | 31 | – | – |
| September | 17 | – | – |
| October | 6 | – | in progress |
| November | 10 | – | – |
| December | 11 | – | – |
| Year to date (Jan–Apr) | 94 | 108 | ▲ 14.9% |
according to the US BTS · October 2024 → April 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 periods16 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 95.0% | 78.6% | ▼ 17.3% |
| February | 80.0% | 89.3% | ▲ 11.6% |
| March | 80.7% | 83.3% | ▲ 3.3% |
| April | 85.7% | 95.2% | ▲ 11.1% |
| May | 100.0% | – | – |
| June | 75.9% | – | – |
| July | 80.7% | – | – |
| August | 80.7% | – | – |
| September | 64.7% | – | – |
| October | 83.3% | – | in progress |
| November | 60.0% | – | – |
| December | 45.5% | – | – |
| Year-to-date average (Jan–Apr) | 85.3% | 86.6% | ▲ 1.5% |
according to the US BTS · October 2024 → April 2026
Average departure delay by month
according to the US BTS · October 2024 → April 2026
Cancelled departures by month
The most recent periods16 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 1 | – |
| February | 2 | 0 | ▼ 100.0% |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | – | – |
| June | 0 | – | – |
| July | 0 | – | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Apr) | 2 | 1 | ▼ 50.0% |
according to the US BTS · October 2024 → April 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 99.3% 404
- Cancelled 0.7% 3
Share of all recorded flights in the period, all legs. · Oct 13, 2024 → Apr 21, 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 |
|---|---|---|---|---|
| LAX PDX Los Angeles International Airport – Portland International Airport | 1,343 | 0.9 min | 90.0% | 142 |
| ORD ANC Chicago O'Hare International Airport – Ted Stevens Anchorage International Airport | 4,568 | 11.1 min | 75.0% | 104 |
| SEA MSO Seattle–Tacoma International Airport – Missoula Montana Airport | 624 | 3.7 min | 84.1% | 70 |
| GEG SEA Spokane International Airport – Seattle–Tacoma International Airport | 359 | -1.9 min | 97.1% | 34 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 8 | 8 | 75.0% | 0 |
| November 2024 | 19 | 19 | 100.0% | 0 |
| December 2024 | 26 | 26 | 88.5% | 0 |
| January 2025 | 20 | 20 | 95.0% | 0 |
| February 2025 | 22 | 20 | 80.0% | 2 |
| March 2025 | 31 | 31 | 80.7% | 0 |
| April 2025 | 21 | 21 | 85.7% | 0 |
| May 2025 | 17 | 17 | 100.0% | 0 |
| June 2025 | 29 | 29 | 75.9% | 0 |
| July 2025 | 31 | 31 | 80.7% | 0 |
| August 2025 | 31 | 31 | 80.7% | 0 |
| September 2025 | 17 | 17 | 64.7% | 0 |
| October 2025 | 6 | 6 | 83.3% | 0 |
| November 2025 | 10 | 10 | 60.0% | 0 |
| December 2025 | 11 | 11 | 45.5% | 0 |
| January 2026 | 29 | 28 | 78.6% | 1 |
| February 2026 | 28 | 28 | 89.3% | 0 |
| March 2026 | 30 | 30 | 83.3% | 0 |
| April 2026 | 21 | 21 | 95.2% | 0 |