WN955
WN955 (Southwest Airlines) is a multi-stop service on 34 routes, busiest Nashville to Chicago. Of 582 departures recorded from October 2024 to July 2026, 69.8% left on time, according to the US BTS.
- On-time departures69.8%of 582 flights
- Average delay18.3 min
- July 202656▲ 300.0%vs July 2025
- Cancelled2.1%
- 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 | 25 | 27 | ▲ 8.0% |
| February | 21 | 28 | ▲ 33.3% |
| March | 30 | 19 | ▼ 36.7% |
| April | 38 | 9 | ▼ 76.3% |
| May | 35 | 10 | ▼ 71.4% |
| June | 15 | 46 | ▲ 206.7% |
| July | 14 | 56 | ▲ 300.0% |
| August | 17 | – | – |
| September | 17 | – | – |
| October | 27 | – | in progress |
| November | 29 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 178 | 195 | ▲ 9.6% |
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 | 85.7% | 88.5% | ▲ 3.2% |
| February | 100.0% | 74.1% | ▼ 25.9% |
| March | 83.3% | 63.2% | ▼ 24.2% |
| April | 92.1% | 88.9% | ▼ 3.5% |
| May | 84.4% | 50.0% | ▼ 40.7% |
| June | 73.3% | 23.9% | ▼ 67.4% |
| July | 71.4% | 36.4% | ▼ 49.1% |
| August | 76.5% | – | – |
| September | 94.1% | – | – |
| October | 40.7% | – | in progress |
| November | 55.2% | – | – |
| December | 53.3% | – | – |
| Year-to-date average (Jan–Jul) | 84.3% | 60.7% | ▼ 28.0% |
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 | 4 | 1 | ▼ 75.0% |
| February | 1 | 1 | 0.0% |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 3 | 0 | ▼ 100.0% |
| June | 0 | 0 | – |
| July | 0 | 1 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 1 | – | – |
| Year to date (Jan–Jul) | 8 | 3 | ▼ 62.5% |
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 97.9% 570
- Cancelled 2.1% 12
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
5| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| BNA MDW Nashville International Airport – Chicago Midway International Airport | 636 | -1.5 min | 94.8% | 101 |
| HOU LGA William P. Hobby Airport – LaGuardia Airport | 2,295 | 42.1 min | 54.0% | 64 |
| BWI MDW Baltimore/Washington International Thurgood Marshall Airport – Chicago Midway International Airport | 981 | 8.2 min | 82.7% | 54 |
| STL DAL St. Louis Lambert International Airport – Dallas Love Field | 878 | 1.8 min | 94.1% | 53 |
| STL DCA St. Louis Lambert International Airport – Ronald Reagan Washington National Airport | 1,154 | 5.0 min | 81.8% | 33 |
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 | 38 | 38 | 92.1% | 0 |
| January 2025 | 25 | 21 | 85.7% | 4 |
| February 2025 | 21 | 20 | 100.0% | 1 |
| March 2025 | 30 | 30 | 83.3% | 0 |
| April 2025 | 38 | 38 | 92.1% | 0 |
| May 2025 | 35 | 32 | 84.4% | 3 |
| June 2025 | 15 | 15 | 73.3% | 0 |
| July 2025 | 14 | 14 | 71.4% | 0 |
| August 2025 | 17 | 17 | 76.5% | 0 |
| September 2025 | 17 | 17 | 94.1% | 0 |
| October 2025 | 27 | 27 | 40.7% | 0 |
| November 2025 | 29 | 29 | 55.2% | 0 |
| December 2025 | 31 | 30 | 53.3% | 1 |
| January 2026 | 27 | 26 | 88.5% | 1 |
| February 2026 | 28 | 27 | 74.1% | 1 |
| March 2026 | 19 | 19 | 63.2% | 0 |
| April 2026 | 9 | 9 | 88.9% | 0 |
| May 2026 | 10 | 10 | 50.0% | 0 |
| June 2026 | 46 | 46 | 23.9% | 0 |
| July 2026 | 56 | 55 | 36.4% | 1 |