WN3955
WN3955 (Southwest Airlines) is a multi-stop service on 27 routes, busiest Memphis to Chicago. Of 544 departures recorded from October 2024 to July 2026, 76.2% left on time, according to the US BTS.
- On-time departures76.2%of 544 flights
- Average delay12.2 min
- July 20269▼ 71.0%vs July 2025
- Cancelled0.6%
- Legs flown under this number27
according to the US BTS · Oct 12, 2024 → Jul 29, 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 | 12 | 29 | ▲ 141.7% |
| February | 19 | 38 | ▲ 100.0% |
| March | 51 | 16 | ▼ 68.6% |
| April | 36 | 23 | ▼ 36.1% |
| May | 31 | 26 | ▼ 16.1% |
| June | 30 | 10 | ▼ 66.7% |
| July | 31 | 9 | ▼ 71.0% |
| August | 27 | – | – |
| September | 26 | – | – |
| October | 31 | – | in progress |
| November | 6 | – | – |
| December | 11 | – | – |
| Year to date (Jan–Jul) | 210 | 151 | ▼ 28.1% |
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 | 83.3% | 75.9% | ▼ 9.0% |
| February | 52.6% | 68.4% | ▲ 30.0% |
| March | 60.8% | 100.0% | ▲ 64.5% |
| April | 72.2% | 87.0% | ▲ 20.4% |
| May | 77.4% | 65.4% | ▼ 15.6% |
| June | 93.3% | 90.0% | ▼ 3.6% |
| July | 96.8% | 66.7% | ▼ 31.1% |
| August | 77.8% | – | – |
| September | 69.2% | – | – |
| October | 64.5% | – | in progress |
| November | 100.0% | – | – |
| December | 45.5% | – | – |
| Year-to-date average (Jan–Jul) | 76.6% | 79.0% | ▲ 3.1% |
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 | 0 | 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 | 1 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 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 99.4% 541
- Cancelled 0.6% 3
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 29, 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 |
|---|---|---|---|---|
| MEM MDW Frederick W. Smith International Airport – Chicago Midway International Airport | 774 | 8.9 min | 95.1% | 61 |
| DJT BNA President Donald J. Trump International Airport – Nashville International Airport | 1,221 | 7.9 min | 81.0% | 58 |
| LAS AUS Harry Reid International Airport – Austin Bergstrom International Airport | 1,752 | 13.1 min | 68.4% | 57 |
| PNS MCI Pensacola International Airport – Kansas City International Airport | 1,197 | 6.4 min | 76.0% | 50 |
| ONT PHX Ontario International Airport – Phoenix Sky Harbor International Airport | 522 | 12.9 min | 74.0% | 50 |
| LAS FAT Harry Reid International Airport – Fresno Yosemite International Airport | 416 | 11.3 min | 74.0% | 50 |
| DCA DAL Ronald Reagan Washington National Airport – Dallas Love Field | 1,902 | 29.6 min | 45.5% | 33 |
| MSP DEN Minneapolis–Saint Paul International Airport / Wold–Chamberlain Field – Denver International Airport | 1,092 | 16.6 min | 64.5% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 33 | 31 | 93.6% | 2 |
| November 2024 | 27 | 27 | 96.3% | 0 |
| December 2024 | 22 | 22 | 59.1% | 0 |
| January 2025 | 12 | 12 | 83.3% | 0 |
| February 2025 | 19 | 19 | 52.6% | 0 |
| March 2025 | 51 | 51 | 60.8% | 0 |
| April 2025 | 36 | 36 | 72.2% | 0 |
| May 2025 | 31 | 31 | 77.4% | 0 |
| June 2025 | 30 | 30 | 93.3% | 0 |
| July 2025 | 31 | 31 | 96.8% | 0 |
| August 2025 | 27 | 27 | 77.8% | 0 |
| September 2025 | 26 | 26 | 69.2% | 0 |
| October 2025 | 31 | 31 | 64.5% | 0 |
| November 2025 | 6 | 5 | 100.0% | 1 |
| December 2025 | 11 | 11 | 45.5% | 0 |
| January 2026 | 29 | 29 | 75.9% | 0 |
| February 2026 | 38 | 38 | 68.4% | 0 |
| March 2026 | 16 | 16 | 100.0% | 0 |
| April 2026 | 23 | 23 | 87.0% | 0 |
| May 2026 | 26 | 26 | 65.4% | 0 |
| June 2026 | 10 | 10 | 90.0% | 0 |
| July 2026 | 9 | 9 | 66.7% | 0 |