AS436
AS436 (Alaska Airlines) is a multi-stop service on 7 routes, busiest Portland to Boston. Of 320 departures recorded from November 2024 to July 2026, 84.0% left on time, according to the US BTS.
- On-time departures84.0%of 320 flights
- Average delay5.1 min
- July 202630▲ 0.0%vs July 2025
- Cancelled0.3%
- Legs flown under this number7
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods16 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 1 | 3 | ▲ 200.0% |
| February | – | – | – |
| March | – | 10 | – |
| April | 1 | 19 | ▲ 1,800.0% |
| May | 17 | 24 | ▲ 41.2% |
| June | 30 | 30 | 0.0% |
| July | 30 | 30 | 0.0% |
| August | 26 | – | – |
| September | 17 | – | – |
| October | 23 | – | in progress |
| November | 29 | – | – |
| December | 24 | – | – |
according to the US BTS · November 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 periods16 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 100.0% | 66.7% | ▼ 33.3% |
| February | – | – | – |
| March | – | 90.0% | – |
| April | 100.0% | 89.5% | ▼ 10.5% |
| May | 82.4% | 70.8% | ▼ 14.0% |
| June | 86.7% | 86.7% | 0.0% |
| July | 76.7% | 83.3% | ▲ 8.7% |
| August | 88.5% | – | – |
| September | 82.4% | – | – |
| October | 90.9% | – | in progress |
| November | 82.8% | – | – |
| December | 87.5% | – | – |
according to the US BTS · November 2024 → July 2026
Average departure delay by month
Months without data are left blank.
according to the US BTS · November 2024 → July 2026
Cancelled departures by month
Months without data are left blank.
The most recent periods16 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | – | – | – |
| March | – | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 1 | – | in progress |
| November | 0 | – | – |
| December | 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 99.7% 319
- Cancelled 0.3% 1
Share of all recorded flights in the period, all legs. · Nov 24, 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 BOS Portland International Airport – Boston Logan International Airport | 4,072 | 6.8 min | 81.0% | 233 |
| SEA IAD Seattle–Tacoma International Airport – Washington Dulles International Airport | 3,702 | 1.4 min | 92.9% | 42 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| November 2024 | 1 | 1 | 100.0% | 0 |
| December 2024 | 5 | 5 | 80.0% | 0 |
| January 2025 | 1 | 1 | 100.0% | 0 |
| April 2025 | 1 | 1 | 100.0% | 0 |
| May 2025 | 17 | 17 | 82.4% | 0 |
| June 2025 | 30 | 30 | 86.7% | 0 |
| July 2025 | 30 | 30 | 76.7% | 0 |
| August 2025 | 26 | 26 | 88.5% | 0 |
| September 2025 | 17 | 17 | 82.4% | 0 |
| October 2025 | 23 | 22 | 90.9% | 1 |
| November 2025 | 29 | 29 | 82.8% | 0 |
| December 2025 | 24 | 24 | 87.5% | 0 |
| January 2026 | 3 | 3 | 66.7% | 0 |
| March 2026 | 10 | 10 | 90.0% | 0 |
| April 2026 | 19 | 19 | 89.5% | 0 |
| May 2026 | 24 | 24 | 70.8% | 0 |
| June 2026 | 30 | 30 | 86.7% | 0 |
| July 2026 | 30 | 30 | 83.3% | 0 |