WN1543
WN1543 (Southwest Airlines) is a multi-stop service on 26 routes, busiest Atlanta to Jacksonville. Of 641 departures recorded from October 2024 to July 2026, 82.9% left on time, according to the US BTS.
- On-time departures82.9%of 641 flights
- Average delay7.6 min
- July 202633▲ 22.2%vs July 2025
- Cancelled0.8%
- Legs flown under this number26
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 | 28 | 37 | ▲ 32.1% |
| February | 26 | 35 | ▲ 34.6% |
| March | 15 | 36 | ▲ 140.0% |
| April | 26 | 31 | ▲ 19.2% |
| May | 31 | 31 | 0.0% |
| June | 26 | 30 | ▲ 15.4% |
| July | 27 | 33 | ▲ 22.2% |
| August | 30 | – | – |
| September | 30 | – | – |
| October | 31 | – | in progress |
| November | 32 | – | – |
| December | 33 | – | – |
| Year to date (Jan–Jul) | 179 | 233 | ▲ 30.2% |
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 | 77.8% | 89.2% | ▲ 14.7% |
| February | 69.2% | 88.6% | ▲ 27.9% |
| March | 66.7% | 80.6% | ▲ 20.8% |
| April | 88.5% | 100.0% | ▲ 13.0% |
| May | 80.7% | 96.8% | ▲ 20.0% |
| June | 92.0% | 73.3% | ▼ 20.3% |
| July | 95.8% | 72.7% | ▼ 24.1% |
| August | 90.0% | – | – |
| September | 86.7% | – | – |
| October | 67.7% | – | in progress |
| November | 87.5% | – | – |
| December | 78.8% | – | – |
| Year-to-date average (Jan–Jul) | 81.5% | 85.9% | ▲ 5.4% |
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 | 1 | 0 | ▼ 100.0% |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 1 | 0 | ▼ 100.0% |
| July | 3 | 0 | ▼ 100.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 5 | 0 | ▼ 100.0% |
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 99.2% 636
- Cancelled 0.8% 5
Share of all recorded flights in the period, all legs. · Oct 13, 2024 → Jul 31, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
10Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 17 | 17 | 88.2% | 0 |
| November 2024 | 26 | 26 | 76.9% | 0 |
| December 2024 | 30 | 30 | 70.0% | 0 |
| January 2025 | 28 | 27 | 77.8% | 1 |
| February 2025 | 26 | 26 | 69.2% | 0 |
| March 2025 | 15 | 15 | 66.7% | 0 |
| April 2025 | 26 | 26 | 88.5% | 0 |
| May 2025 | 31 | 31 | 80.7% | 0 |
| June 2025 | 26 | 25 | 92.0% | 1 |
| July 2025 | 27 | 24 | 95.8% | 3 |
| August 2025 | 30 | 30 | 90.0% | 0 |
| September 2025 | 30 | 30 | 86.7% | 0 |
| October 2025 | 31 | 31 | 67.7% | 0 |
| November 2025 | 32 | 32 | 87.5% | 0 |
| December 2025 | 33 | 33 | 78.8% | 0 |
| January 2026 | 37 | 37 | 89.2% | 0 |
| February 2026 | 35 | 35 | 88.6% | 0 |
| March 2026 | 36 | 36 | 80.6% | 0 |
| April 2026 | 31 | 31 | 100.0% | 0 |
| May 2026 | 31 | 31 | 96.8% | 0 |
| June 2026 | 30 | 30 | 73.3% | 0 |
| July 2026 | 33 | 33 | 72.7% | 0 |