WN4057
WN4057 (Southwest Airlines) is a multi-stop service on 17 routes, busiest Tulsa to Chicago. Of 179 departures recorded from October 2024 to July 2026, 88.3% left on time, according to the US BTS.
- On-time departures88.3%of 179 flights
- Average delay6.3 min
- July 202630
- Cancelled0.0%
- Legs flown under this number17
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods13 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 1 | 9 | ▲ 800.0% |
| February | – | 17 | – |
| March | 4 | 29 | ▲ 625.0% |
| April | 1 | 6 | ▲ 500.0% |
| May | 3 | – | – |
| June | – | 27 | – |
| July | – | 30 | – |
| August | 11 | – | – |
| September | 13 | – | – |
| October | – | – | in progress |
| November | 2 | – | – |
| December | – | – | – |
according to the US BTS · October 2024 → July 2026
On-time departures by month
Months without data are left blank.
On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.
The most recent periods13 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 100.0% | 100.0% | 0.0% |
| February | – | 100.0% | – |
| March | 100.0% | 86.2% | ▼ 13.8% |
| April | 100.0% | 83.3% | ▼ 16.7% |
| May | 100.0% | – | – |
| June | – | 92.6% | – |
| July | – | 100.0% | – |
| August | 81.8% | – | – |
| September | 76.9% | – | – |
| October | – | – | in progress |
| November | 50.0% | – | – |
| December | – | – | – |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
Months without data are left blank.
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
Months without data are left blank.
The most recent periods13 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | – | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | – | – |
| June | – | 0 | – |
| July | – | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | – | – | in progress |
| November | 0 | – | – |
| December | – | – | – |
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 100.0% 179
- Cancelled 0.0% 0
Share of all recorded flights in the period, all legs. · Oct 14, 2024 → Jul 31, 2026
Legs flown under this number
1| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| TUL MDW Tulsa International Airport – Chicago Midway International Airport | 938 | -0.5 min | 96.5% | 57 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 65.0% | 0 |
| November 2024 | 4 | 4 | 100.0% | 0 |
| December 2024 | 2 | 2 | 50.0% | 0 |
| January 2025 | 1 | 1 | 100.0% | 0 |
| March 2025 | 4 | 4 | 100.0% | 0 |
| April 2025 | 1 | 1 | 100.0% | 0 |
| May 2025 | 3 | 3 | 100.0% | 0 |
| August 2025 | 11 | 11 | 81.8% | 0 |
| September 2025 | 13 | 13 | 76.9% | 0 |
| November 2025 | 2 | 2 | 50.0% | 0 |
| January 2026 | 9 | 9 | 100.0% | 0 |
| February 2026 | 17 | 17 | 100.0% | 0 |
| March 2026 | 29 | 29 | 86.2% | 0 |
| April 2026 | 6 | 6 | 83.3% | 0 |
| June 2026 | 27 | 27 | 92.6% | 0 |
| July 2026 | 30 | 30 | 100.0% | 0 |