AS309
AS309 (Alaska Airlines) is a multi-stop service on 11 routes, busiest Dulles to Los Angeles. Of 318 departures recorded from October 2024 to July 2026, 72.3% left on time, according to the US BTS.
- On-time departures72.3%of 318 flights
- Average delay13.0 min
- July 202630
- Cancelled1.3%
- Legs flown under this number11
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods15 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 5 | 31 | ▲ 520.0% |
| February | – | 11 | – |
| March | 10 | 6 | ▼ 40.0% |
| April | 24 | 15 | ▼ 37.5% |
| May | 27 | 12 | ▼ 55.6% |
| June | 8 | 21 | ▲ 162.5% |
| July | – | 30 | – |
| August | – | – | – |
| September | – | – | – |
| October | 22 | – | in progress |
| November | 1 | – | – |
| December | 15 | – | – |
according to the US BTS · October 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 periods15 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 20.0% | 75.9% | ▲ 279.3% |
| February | – | 63.6% | – |
| March | 70.0% | 100.0% | ▲ 42.9% |
| April | 87.5% | 80.0% | ▼ 8.6% |
| May | 88.9% | 91.7% | ▲ 3.1% |
| June | 100.0% | 47.6% | ▼ 52.4% |
| July | – | 51.7% | – |
| August | – | – | – |
| September | – | – | – |
| October | 85.7% | – | in progress |
| November | 100.0% | – | – |
| December | 53.3% | – | – |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
Months without data are left blank.
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
Months without data are left blank.
The most recent periods15 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 2 | – |
| February | – | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | – | 1 | – |
| August | – | – | – |
| September | – | – | – |
| October | 1 | – | in progress |
| November | 0 | – | – |
| December | 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 98.7% 314
- Cancelled 1.3% 4
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
3| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| IAD LAX Washington Dulles International Airport – Los Angeles International Airport | 3,674 | 14.8 min | 72.2% | 133 |
| MCO SEA Orlando International Airport – Seattle–Tacoma International Airport | 4,105 | 20.8 min | 55.0% | 92 |
| BOS SEA Boston Logan International Airport – Seattle–Tacoma International Airport | 4,006 | 1.1 min | 82.4% | 36 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 65.0% | 0 |
| November 2024 | 29 | 29 | 89.7% | 0 |
| December 2024 | 31 | 31 | 54.8% | 0 |
| January 2025 | 5 | 5 | 20.0% | 0 |
| March 2025 | 10 | 10 | 70.0% | 0 |
| April 2025 | 24 | 24 | 87.5% | 0 |
| May 2025 | 27 | 27 | 88.9% | 0 |
| June 2025 | 8 | 8 | 100.0% | 0 |
| October 2025 | 22 | 21 | 85.7% | 1 |
| November 2025 | 1 | 1 | 100.0% | 0 |
| December 2025 | 15 | 15 | 53.3% | 0 |
| January 2026 | 31 | 29 | 75.9% | 2 |
| February 2026 | 11 | 11 | 63.6% | 0 |
| March 2026 | 6 | 6 | 100.0% | 0 |
| April 2026 | 15 | 15 | 80.0% | 0 |
| May 2026 | 12 | 12 | 91.7% | 0 |
| June 2026 | 21 | 21 | 47.6% | 0 |
| July 2026 | 30 | 29 | 51.7% | 1 |