WN579
WN579 (Southwest Airlines) is a multi-stop service on 29 routes, busiest Raleigh to Nashville. Of 749 departures recorded from October 2024 to July 2026, 75.8% left on time, according to the US BTS.
- On-time departures75.8%of 749 flights
- Average delay12.5 min
- July 202675▲ 316.7%vs July 2025
- Cancelled0.5%
- Legs flown under this number29
according to the US BTS · Oct 12, 2024 → Jul 31, 2026 domestic flights only
Recorded departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
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 | 27 | ▼ 12.9% |
| February | 28 | 40 | ▲ 42.9% |
| March | 27 | 51 | ▲ 88.9% |
| April | 26 | 37 | ▲ 42.3% |
| May | 27 | 35 | ▲ 29.6% |
| June | 17 | 69 | ▲ 305.9% |
| July | 18 | 75 | ▲ 316.7% |
| August | 33 | – | – |
| September | 34 | – | – |
| October | 31 | – | in progress |
| November | 31 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 174 | 334 | ▲ 92.0% |
according to the US BTS · October 2024 → July 2026
On-time departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
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 | 96.7% | 85.2% | ▼ 11.9% |
| February | 92.9% | 55.0% | ▼ 40.8% |
| March | 88.9% | 68.0% | ▼ 23.5% |
| April | 76.0% | 47.2% | ▼ 37.9% |
| May | 74.1% | 17.1% | ▼ 76.9% |
| June | 64.7% | 72.5% | ▲ 12.0% |
| July | 61.1% | 86.7% | ▲ 41.8% |
| August | 75.8% | – | – |
| September | 82.4% | – | – |
| October | 93.6% | – | in progress |
| November | 93.6% | – | – |
| December | 74.2% | – | – |
| Year-to-date average (Jan–Jul) | 79.2% | 61.7% | ▼ 22.1% |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
Partial coverage: domestic flights only · 22 of 22 periods have data
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
The most recent periods19 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 1 | 0 | ▼ 100.0% |
| February | 0 | 0 | – |
| March | 0 | 1 | – |
| April | 1 | 1 | 0.0% |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 2 | 2 | 0.0% |
according to the US BTS · October 2024 → July 2026
This is not a forecast
This is a historical record of departures already flown, not a forecast for your flight.
This number flies several legs
Several legs: the headline figure averages all of them. See the leg table.
Cancellation share
- Not cancelled 99.5% 745
- Cancelled 0.5% 4
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
88 of 8
| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| RDU BNA Raleigh-Durham International Airport – Nashville International Airport | 710 | -1.3 min | 95.1% | 123 |
| FLL PIT Fort Lauderdale Hollywood International Airport – Pittsburgh International Airport | 1,603 | 17.7 min | 75.7% | 107 |
| BNA MEM Nashville International Airport – Frederick W. Smith International Airport | 322 | 3.5 min | 86.2% | 58 |
| BNA DAL Nashville International Airport – Dallas Love Field | 1,000 | 39.6 min | 30.6% | 50 |
| MEM DEN Frederick W. Smith International Airport – Denver International Airport | 1,401 | 6.7 min | 83.7% | 49 |
| LGB LAS Long Beach International Airport – Harry Reid International Airport | 372 | 5.7 min | 73.8% | 42 |
| AUS IND Austin Bergstrom International Airport – Indianapolis International Airport | 1,479 | 15.3 min | 66.7% | 36 |
| LAS SAT Harry Reid International Airport – San Antonio International Airport | 1,718 | 15.1 min | 80.7% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 90.0% | 0 |
| November 2024 | 30 | 30 | 93.3% | 0 |
| December 2024 | 31 | 31 | 90.3% | 0 |
| January 2025 | 31 | 30 | 96.7% | 1 |
| February 2025 | 28 | 28 | 92.9% | 0 |
| March 2025 | 27 | 27 | 88.9% | 0 |
| April 2025 | 26 | 25 | 76.0% | 1 |
| May 2025 | 27 | 27 | 74.1% | 0 |
| June 2025 | 17 | 17 | 64.7% | 0 |
| July 2025 | 18 | 18 | 61.1% | 0 |
| August 2025 | 33 | 33 | 75.8% | 0 |
| September 2025 | 34 | 34 | 82.4% | 0 |
| October 2025 | 31 | 31 | 93.6% | 0 |
| November 2025 | 31 | 31 | 93.6% | 0 |
| December 2025 | 31 | 31 | 74.2% | 0 |
| January 2026 | 27 | 27 | 85.2% | 0 |
| February 2026 | 40 | 40 | 55.0% | 0 |
| March 2026 | 51 | 50 | 68.0% | 1 |
| April 2026 | 37 | 36 | 47.2% | 1 |
| May 2026 | 35 | 35 | 17.1% | 0 |
| June 2026 | 69 | 69 | 72.5% | 0 |
| July 2026 | 75 | 75 | 86.7% | 0 |