WN580
WN580 (Southwest Airlines) is a multi-stop service on 28 routes, busiest St Louis to New York. Of 740 departures recorded from October 2024 to July 2026, 71.3% left on time, according to the US BTS.
- On-time departures71.3%of 740 flights
- Average delay15.0 min
- July 202631▲ 0.0%vs July 2025
- Cancelled0.3%
- Legs flown under this number28
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 | 28 | 31 | ▲ 10.7% |
| February | 26 | 28 | ▲ 7.7% |
| March | 31 | 83 | ▲ 167.7% |
| April | 36 | 33 | ▼ 8.3% |
| May | 38 | 18 | ▼ 52.6% |
| June | 31 | 29 | ▼ 6.5% |
| July | 31 | 31 | 0.0% |
| August | 42 | – | – |
| September | 35 | – | – |
| October | 31 | – | in progress |
| November | 37 | – | – |
| December | 48 | – | – |
| Year to date (Jan–Jul) | 221 | 253 | ▲ 14.5% |
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 | 92.6% | 77.4% | ▼ 16.4% |
| February | 92.3% | 82.1% | ▼ 11.0% |
| March | 77.4% | 49.4% | ▼ 36.2% |
| April | 55.6% | 81.8% | ▲ 47.3% |
| May | 55.3% | 77.8% | ▲ 40.8% |
| June | 67.7% | 34.5% | ▼ 49.1% |
| July | 58.1% | 29.0% | ▼ 50.0% |
| August | 90.5% | – | – |
| September | 100.0% | – | – |
| October | 58.1% | – | in progress |
| November | 94.6% | – | – |
| December | 59.6% | – | – |
| Year-to-date average (Jan–Jul) | 71.3% | 61.7% | ▼ 13.4% |
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 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 1 | – | – |
| Year to date (Jan–Jul) | 1 | 0 | ▼ 100.0% |
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 99.7% 738
- Cancelled 0.3% 2
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
99 of 9
| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| STL LGA St. Louis Lambert International Airport – LaGuardia Airport | 1,426 | 0.6 min | 94.6% | 111 |
| HOU PHX William P. Hobby Airport – Phoenix Sky Harbor International Airport | 1,638 | 17.8 min | 62.3% | 61 |
| SAN TPA San Diego International Airport – Tampa International Airport | 3,352 | 12.6 min | 77.6% | 58 |
| BNA MEM Nashville International Airport – Frederick W. Smith International Airport | 322 | 43.6 min | 28.1% | 57 |
| BWI MCO Baltimore/Washington International Thurgood Marshall Airport – Orlando International Airport | 1,269 | 22.5 min | 56.3% | 48 |
| JAX BWI Jacksonville International Airport – Baltimore/Washington International Thurgood Marshall Airport | 1,068 | 8.0 min | 82.5% | 40 |
| MDW MCI Chicago Midway International Airport – Kansas City International Airport | 650 | -4.9 min | 97.1% | 34 |
| VPS HOU Destin-Fort Walton Beach Airport – William P. Hobby Airport | 848 | 9.9 min | 81.8% | 33 |
| DEN SFO Denver International Airport – San Francisco International Airport | 1,553 | 24.9 min | 54.8% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 17 | 17 | 100.0% | 0 |
| November 2024 | 27 | 27 | 96.3% | 0 |
| December 2024 | 29 | 29 | 96.6% | 0 |
| January 2025 | 28 | 27 | 92.6% | 1 |
| February 2025 | 26 | 26 | 92.3% | 0 |
| March 2025 | 31 | 31 | 77.4% | 0 |
| April 2025 | 36 | 36 | 55.6% | 0 |
| May 2025 | 38 | 38 | 55.3% | 0 |
| June 2025 | 31 | 31 | 67.7% | 0 |
| July 2025 | 31 | 31 | 58.1% | 0 |
| August 2025 | 42 | 42 | 90.5% | 0 |
| September 2025 | 35 | 35 | 100.0% | 0 |
| October 2025 | 31 | 31 | 58.1% | 0 |
| November 2025 | 37 | 37 | 94.6% | 0 |
| December 2025 | 48 | 47 | 59.6% | 1 |
| January 2026 | 31 | 31 | 77.4% | 0 |
| February 2026 | 28 | 28 | 82.1% | 0 |
| March 2026 | 83 | 83 | 49.4% | 0 |
| April 2026 | 33 | 33 | 81.8% | 0 |
| May 2026 | 18 | 18 | 77.8% | 0 |
| June 2026 | 29 | 29 | 34.5% | 0 |
| July 2026 | 31 | 31 | 29.0% | 0 |