AS520
AS520 (Alaska Airlines) is a multi-stop service on 9 routes, busiest Seattle to Fort Lauderdale. Of 343 departures recorded from November 2024 to July 2026, 79.3% left on time, according to the US BTS.
- On-time departures79.3%of 343 flights
- Average delay7.5 min
- July 202630
- Cancelled0.0%
- Legs flown under this number9
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 | 23 | 27 | ▲ 17.4% |
| February | 20 | 9 | ▼ 55.0% |
| March | 24 | 3 | ▼ 87.5% |
| April | 23 | 9 | ▼ 60.9% |
| May | 27 | 30 | ▲ 11.1% |
| June | 11 | 30 | ▲ 172.7% |
| July | – | 30 | – |
| August | – | – | – |
| September | – | – | – |
| October | 6 | – | in progress |
| November | 25 | – | – |
| December | 23 | – | – |
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 | 87.0% | 81.5% | ▼ 6.3% |
| February | 85.0% | 88.9% | ▲ 4.6% |
| March | 91.7% | 66.7% | ▼ 27.3% |
| April | 91.3% | 77.8% | ▼ 14.8% |
| May | 81.5% | 86.7% | ▲ 6.4% |
| June | 81.8% | 60.0% | ▼ 26.7% |
| July | – | 46.7% | – |
| August | – | – | – |
| September | – | – | – |
| October | 100.0% | – | in progress |
| November | 92.0% | – | – |
| December | 65.2% | – | – |
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 | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | – | 0 | – |
| August | – | – | – |
| September | – | – | – |
| October | 0 | – | 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 100.0% 343
- Cancelled 0.0% 0
Share of all recorded flights in the period, all legs. · Nov 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 |
|---|---|---|---|---|
| SEA FLL Seattle–Tacoma International Airport – Fort Lauderdale Hollywood International Airport | 4,368 | 2.9 min | 89.4% | 123 |
| SEA SAT Seattle–Tacoma International Airport – San Antonio International Airport | 2,854 | 17.1 min | 63.2% | 106 |
| PDX LAX Portland International Airport – Los Angeles International Airport | 1,343 | -2.5 min | 90.6% | 32 |
| SJC PDX Mineta San Jose International Airport – Portland International Airport | 916 | 2.0 min | 87.1% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| November 2024 | 9 | 9 | 77.8% | 0 |
| December 2024 | 14 | 14 | 92.9% | 0 |
| January 2025 | 23 | 23 | 87.0% | 0 |
| February 2025 | 20 | 20 | 85.0% | 0 |
| March 2025 | 24 | 24 | 91.7% | 0 |
| April 2025 | 23 | 23 | 91.3% | 0 |
| May 2025 | 27 | 27 | 81.5% | 0 |
| June 2025 | 11 | 11 | 81.8% | 0 |
| October 2025 | 6 | 6 | 100.0% | 0 |
| November 2025 | 25 | 25 | 92.0% | 0 |
| December 2025 | 23 | 23 | 65.2% | 0 |
| January 2026 | 27 | 27 | 81.5% | 0 |
| February 2026 | 9 | 9 | 88.9% | 0 |
| March 2026 | 3 | 3 | 66.7% | 0 |
| April 2026 | 9 | 9 | 77.8% | 0 |
| May 2026 | 30 | 30 | 86.7% | 0 |
| June 2026 | 30 | 30 | 60.0% | 0 |
| July 2026 | 30 | 30 | 46.7% | 0 |