AS507
AS507 (Alaska Airlines) is a multi-stop service on 3 routes, busiest Dulles to San Diego. Of 769 departures recorded from October 2024 to July 2026, 82.4% left on time, according to the US BTS.
- On-time departures82.4%of 769 flights
- Average delay7.1 min
- July 202661▲ 103.3%vs July 2025
- Cancelled0.3%
- Legs flown under this number3
Recorded departures by month
All legs under this number combined; see the leg table.
The most recent periods19 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 31 | 25 | ▼ 19.4% |
| February | 28 | 18 | ▼ 35.7% |
| March | 31 | 40 | ▲ 29.0% |
| April | 30 | 56 | ▲ 86.7% |
| May | 31 | 58 | ▲ 87.1% |
| June | 30 | 60 | ▲ 100.0% |
| July | 30 | 61 | ▲ 103.3% |
| August | 31 | – | – |
| September | 30 | – | – |
| October | 30 | – | in progress |
| November | 27 | – | – |
| December | 42 | – | – |
| Year to date (Jan–Jul) | 211 | 318 | ▲ 50.7% |
according to the US BTS · October 2024 → July 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 periods19 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 83.9% | 80.0% | ▼ 4.6% |
| February | 57.1% | 72.2% | ▲ 26.4% |
| March | 90.3% | 92.3% | ▲ 2.2% |
| April | 76.7% | 96.4% | ▲ 25.8% |
| May | 77.4% | 79.3% | ▲ 2.4% |
| June | 76.7% | 86.7% | ▲ 13.0% |
| July | 60.0% | 86.9% | ▲ 44.8% |
| August | 80.0% | – | – |
| September | 90.0% | – | – |
| October | 93.3% | – | in progress |
| November | 81.5% | – | – |
| December | 90.5% | – | – |
| Year-to-date average (Jan–Jul) | 74.6% | 84.8% | ▲ 13.7% |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
The most recent periods19 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | 0 | 0 | – |
| March | 0 | 1 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 1 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 0 | 1 |
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 99.7% 767
- Cancelled 0.3% 2
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 SAN Washington Dulles International Airport – San Diego International Airport | 3,618 | 9.9 min | 79.1% | 426 |
| MKE SEA General Mitchell International Airport – Seattle–Tacoma International Airport | 2,719 | 5.9 min | 81.2% | 187 |
| SEA MKE Seattle–Tacoma International Airport – General Mitchell International Airport | 2,719 | 0.9 min | 93.0% | 156 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 65.0% | 0 |
| November 2024 | 29 | 29 | 86.2% | 0 |
| December 2024 | 31 | 31 | 74.2% | 0 |
| January 2025 | 31 | 31 | 83.9% | 0 |
| February 2025 | 28 | 28 | 57.1% | 0 |
| March 2025 | 31 | 31 | 90.3% | 0 |
| April 2025 | 30 | 30 | 76.7% | 0 |
| May 2025 | 31 | 31 | 77.4% | 0 |
| June 2025 | 30 | 30 | 76.7% | 0 |
| July 2025 | 30 | 30 | 60.0% | 0 |
| August 2025 | 31 | 30 | 80.0% | 1 |
| September 2025 | 30 | 30 | 90.0% | 0 |
| October 2025 | 30 | 30 | 93.3% | 0 |
| November 2025 | 27 | 27 | 81.5% | 0 |
| December 2025 | 42 | 42 | 90.5% | 0 |
| January 2026 | 25 | 25 | 80.0% | 0 |
| February 2026 | 18 | 18 | 72.2% | 0 |
| March 2026 | 40 | 39 | 92.3% | 1 |
| April 2026 | 56 | 56 | 96.4% | 0 |
| May 2026 | 58 | 58 | 79.3% | 0 |
| June 2026 | 60 | 60 | 86.7% | 0 |
| July 2026 | 61 | 61 | 86.9% | 0 |