WN581
WN581 (Southwest Airlines) is a multi-stop service on 34 routes, busiest Nashville to Norfolk. Of 687 departures recorded from October 2024 to July 2026, 81.7% left on time, according to the US BTS.
- On-time departures81.7%of 687 flights
- Average delay7.7 min
- July 202630▼ 33.3%vs July 2025
- Cancelled0.4%
- Legs flown under this number34
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 | 31 | ▲ 10.7% |
| February | 26 | 31 | ▲ 19.2% |
| March | 21 | 31 | ▲ 47.6% |
| April | 28 | 30 | ▲ 7.1% |
| May | 31 | 31 | 0.0% |
| June | 48 | 30 | ▼ 37.5% |
| July | 45 | 30 | ▼ 33.3% |
| August | 32 | – | – |
| September | 30 | – | – |
| October | 27 | – | in progress |
| November | 31 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 227 | 214 | ▼ 5.7% |
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 | 75.0% | 86.2% | ▲ 14.9% |
| February | 84.6% | 80.7% | ▼ 4.7% |
| March | 90.5% | 83.9% | ▼ 7.3% |
| April | 92.9% | 96.7% | ▲ 4.1% |
| May | 90.3% | 93.6% | ▲ 3.6% |
| June | 89.6% | 53.3% | ▼ 40.5% |
| July | 71.1% | 60.0% | ▼ 15.6% |
| August | 58.1% | – | – |
| September | 63.3% | – | – |
| October | 81.5% | – | in progress |
| November | 87.1% | – | – |
| December | 87.1% | – | – |
| Year-to-date average (Jan–Jul) | 84.9% | 79.2% | ▼ 6.7% |
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 | 2 | – |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| 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 | 2 |
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 99.6% 684
- Cancelled 0.4% 3
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
9Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 30 | 30 | 90.0% | 0 |
| November 2024 | 32 | 32 | 100.0% | 0 |
| December 2024 | 33 | 33 | 84.9% | 0 |
| January 2025 | 28 | 28 | 75.0% | 0 |
| February 2025 | 26 | 26 | 84.6% | 0 |
| March 2025 | 21 | 21 | 90.5% | 0 |
| April 2025 | 28 | 28 | 92.9% | 0 |
| May 2025 | 31 | 31 | 90.3% | 0 |
| June 2025 | 48 | 48 | 89.6% | 0 |
| July 2025 | 45 | 45 | 71.1% | 0 |
| August 2025 | 32 | 31 | 58.1% | 1 |
| September 2025 | 30 | 30 | 63.3% | 0 |
| October 2025 | 27 | 27 | 81.5% | 0 |
| November 2025 | 31 | 31 | 87.1% | 0 |
| December 2025 | 31 | 31 | 87.1% | 0 |
| January 2026 | 31 | 29 | 86.2% | 2 |
| February 2026 | 31 | 31 | 80.7% | 0 |
| March 2026 | 31 | 31 | 83.9% | 0 |
| April 2026 | 30 | 30 | 96.7% | 0 |
| May 2026 | 31 | 31 | 93.6% | 0 |
| June 2026 | 30 | 30 | 53.3% | 0 |
| July 2026 | 30 | 30 | 60.0% | 0 |