WN548
WN548 (Southwest Airlines) is a multi-stop service on 25 routes, busiest Louisville to Baltimore. Of 690 departures recorded from October 2024 to July 2026, 80.4% left on time, according to the US BTS.
- On-time departures80.4%of 690 flights
- Average delay11.2 min
- July 202631▲ 34.8%vs July 2025
- Cancelled1.0%
- Legs flown under this number25
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 | 34 | ▲ 9.7% |
| February | 28 | 28 | 0.0% |
| March | 35 | 31 | ▼ 11.4% |
| April | 28 | 33 | ▲ 17.9% |
| May | 27 | 36 | ▲ 33.3% |
| June | 21 | 30 | ▲ 42.9% |
| July | 23 | 31 | ▲ 34.8% |
| August | 29 | – | – |
| September | 30 | – | – |
| October | 31 | – | in progress |
| November | 49 | – | – |
| December | 54 | – | – |
| Year to date (Jan–Jul) | 193 | 223 | ▲ 15.5% |
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 | 100.0% | 79.4% | ▼ 20.6% |
| February | 92.9% | 85.7% | ▼ 7.7% |
| March | 94.3% | 56.7% | ▼ 39.9% |
| April | 77.8% | 83.9% | ▲ 7.8% |
| May | 48.2% | 94.4% | ▲ 96.1% |
| June | 42.9% | 51.7% | ▲ 20.7% |
| July | 52.2% | 38.7% | ▼ 25.8% |
| August | 82.8% | – | – |
| September | 90.0% | – | – |
| October | 96.8% | – | in progress |
| November | 91.8% | – | – |
| December | 90.7% | – | – |
| Year-to-date average (Jan–Jul) | 72.6% | 70.1% | ▼ 3.5% |
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 | 2 | 0 | ▼ 100.0% |
| February | 0 | 0 | – |
| March | 0 | 1 | – |
| April | 1 | 2 | ▲ 100.0% |
| May | 0 | 0 | – |
| June | 0 | 1 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 3 | 4 | ▲ 33.3% |
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% 683
- Cancelled 1.0% 7
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
9Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 80.0% | 0 |
| November 2024 | 30 | 30 | 96.7% | 0 |
| December 2024 | 31 | 31 | 100.0% | 0 |
| January 2025 | 31 | 29 | 100.0% | 2 |
| February 2025 | 28 | 28 | 92.9% | 0 |
| March 2025 | 35 | 35 | 94.3% | 0 |
| April 2025 | 28 | 27 | 77.8% | 1 |
| May 2025 | 27 | 27 | 48.2% | 0 |
| June 2025 | 21 | 21 | 42.9% | 0 |
| July 2025 | 23 | 23 | 52.2% | 0 |
| August 2025 | 29 | 29 | 82.8% | 0 |
| September 2025 | 30 | 30 | 90.0% | 0 |
| October 2025 | 31 | 31 | 96.8% | 0 |
| November 2025 | 49 | 49 | 91.8% | 0 |
| December 2025 | 54 | 54 | 90.7% | 0 |
| January 2026 | 34 | 34 | 79.4% | 0 |
| February 2026 | 28 | 28 | 85.7% | 0 |
| March 2026 | 31 | 30 | 56.7% | 1 |
| April 2026 | 33 | 31 | 83.9% | 2 |
| May 2026 | 36 | 36 | 94.4% | 0 |
| June 2026 | 30 | 29 | 51.7% | 1 |
| July 2026 | 31 | 31 | 38.7% | 0 |