AS310
AS310 (Alaska Airlines) is a multi-stop service on 12 routes, busiest Los Angeles to Dulles. Of 389 departures recorded from October 2024 to July 2026, 86.2% left on time, according to the US BTS.
- On-time departures86.2%of 389 flights
- Average delay3.2 min
- July 202631
- Cancelled1.0%
- Legs flown under this number12
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 | 2 | ▼ 60.0% |
| February | – | 20 | – |
| March | 11 | 21 | ▲ 90.9% |
| April | 27 | 24 | ▼ 11.1% |
| May | 31 | 62 | ▲ 100.0% |
| June | 11 | 39 | ▲ 254.5% |
| July | – | 31 | – |
| August | – | – | – |
| September | – | – | – |
| October | 22 | – | in progress |
| November | 1 | – | – |
| December | 2 | – | – |
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 | 100.0% | 100.0% | 0.0% |
| February | – | 85.0% | – |
| March | 100.0% | 65.0% | ▼ 35.0% |
| April | 88.9% | 95.5% | ▲ 7.4% |
| May | 100.0% | 95.2% | ▼ 4.8% |
| June | 90.9% | 69.2% | ▼ 23.8% |
| July | – | 64.5% | – |
| August | – | – | – |
| September | – | – | – |
| October | 71.4% | – | in progress |
| November | 100.0% | – | – |
| December | 100.0% | – | – |
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 | 0 | – |
| February | – | 0 | – |
| March | 0 | 1 | – |
| April | 0 | 2 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | – | 0 | – |
| 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 99.0% 385
- Cancelled 1.0% 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
6| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| LAX IAD Los Angeles International Airport – Washington Dulles International Airport | 3,674 | -0.6 min | 93.4% | 137 |
| SEA DEN Seattle–Tacoma International Airport – Denver International Airport | 1,645 | 18.7 min | 63.5% | 52 |
| OME ANC Nome Airport – Ted Stevens Anchorage International Airport | 864 | -3.8 min | 93.8% | 49 |
| ANC OME Ted Stevens Anchorage International Airport – Nome Airport | 864 | -0.3 min | 89.6% | 49 |
| SEA PDX Seattle–Tacoma International Airport – Portland International Airport | 208 | 10.2 min | 72.7% | 34 |
| SJC SEA Mineta San Jose International Airport – Seattle–Tacoma International Airport | 1,122 | -2.7 min | 96.8% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 90.0% | 0 |
| November 2024 | 29 | 29 | 96.6% | 0 |
| December 2024 | 31 | 31 | 90.3% | 0 |
| January 2025 | 5 | 5 | 100.0% | 0 |
| March 2025 | 11 | 11 | 100.0% | 0 |
| April 2025 | 27 | 27 | 88.9% | 0 |
| May 2025 | 31 | 31 | 100.0% | 0 |
| June 2025 | 11 | 11 | 90.9% | 0 |
| October 2025 | 22 | 21 | 71.4% | 1 |
| November 2025 | 1 | 1 | 100.0% | 0 |
| December 2025 | 2 | 2 | 100.0% | 0 |
| January 2026 | 2 | 2 | 100.0% | 0 |
| February 2026 | 20 | 20 | 85.0% | 0 |
| March 2026 | 21 | 20 | 65.0% | 1 |
| April 2026 | 24 | 22 | 95.5% | 2 |
| May 2026 | 62 | 62 | 95.2% | 0 |
| June 2026 | 39 | 39 | 69.2% | 0 |
| July 2026 | 31 | 31 | 64.5% | 0 |