AS249
AS249 (Alaska Airlines) is a multi-stop service on 7 routes, busiest San Francisco to Boston. Of 223 departures recorded from December 2024 to July 2026, 74.3% left on time, according to the US BTS.
- On-time departures74.3%of 223 flights
- Average delay15.4 min
- July 202631▲ 10.7%vs July 2025
- Cancelled0.5%
- 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 periods11 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 1 | – | – |
| February | – | – | – |
| March | – | – | – |
| April | 1 | 9 | ▲ 800.0% |
| May | – | 30 | – |
| June | – | 30 | – |
| July | 28 | 31 | ▲ 10.7% |
| August | 31 | – | – |
| September | 30 | – | – |
| October | 24 | – | in progress |
| November | – | – | – |
| December | 6 | – | – |
according to the US BTS · December 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 periods11 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 100.0% | – | – |
| February | – | – | – |
| March | – | – | – |
| April | 100.0% | 88.9% | ▼ 11.1% |
| May | – | 86.7% | – |
| June | – | 70.0% | – |
| July | 96.4% | 54.8% | ▼ 43.1% |
| August | 90.3% | – | – |
| September | 63.3% | – | – |
| October | 52.2% | – | in progress |
| November | – | – | – |
| December | 66.7% | – | – |
according to the US BTS · December 2024 → July 2026
Average departure delay by month
Months without data are left blank.
according to the US BTS · December 2024 → July 2026
Cancelled departures by month
Months without data are left blank.
The most recent periods11 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | – | – |
| February | – | – | – |
| March | – | – | – |
| April | 0 | 0 | – |
| May | – | 0 | – |
| June | – | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 1 | – | in progress |
| November | – | – | – |
| December | 0 | – | – |
according to the US BTS · December 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 99.6% 222
- Cancelled 0.4% 1
Share of all recorded flights in the period, all legs. · Dec 21, 2024 → Jul 31, 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 |
|---|---|---|---|---|
| SFO BOS San Francisco International Airport – Boston Logan International Airport | 4,341 | 12.9 min | 83.6% | 68 |
| DEN SEA Denver International Airport – Seattle–Tacoma International Airport | 1,645 | 24.8 min | 59.6% | 52 |
| ANC FAI Ted Stevens Anchorage International Airport – Fairbanks International Airport | 418 | 0.4 min | 85.4% | 48 |
| BOS SFO Boston Logan International Airport – San Francisco International Airport | 4,341 | 22.8 min | 66.7% | 45 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| December 2024 | 2 | 2 | 50.0% | 0 |
| January 2025 | 1 | 1 | 100.0% | 0 |
| April 2025 | 1 | 1 | 100.0% | 0 |
| July 2025 | 28 | 28 | 96.4% | 0 |
| August 2025 | 31 | 31 | 90.3% | 0 |
| September 2025 | 30 | 30 | 63.3% | 0 |
| October 2025 | 24 | 23 | 52.2% | 1 |
| December 2025 | 6 | 6 | 66.7% | 0 |
| April 2026 | 9 | 9 | 88.9% | 0 |
| May 2026 | 30 | 30 | 86.7% | 0 |
| June 2026 | 30 | 30 | 70.0% | 0 |
| July 2026 | 31 | 31 | 54.8% | 0 |