WN4549
WN4549 (Southwest Airlines) is a multi-stop service on 11 routes, busiest Chicago to Kansas City. Of 326 departures recorded from October 2024 to July 2026, 76.2% left on time, according to the US BTS.
- On-time departures76.2%of 326 flights
- Average delay9.7 min
- July 20266▼ 62.5%vs July 2025
- Cancelled0.9%
- Legs flown under this number11
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods15 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | – | 31 | – |
| February | – | 36 | – |
| March | 38 | 32 | ▼ 15.8% |
| April | 10 | 27 | ▲ 170.0% |
| May | – | 26 | – |
| June | 16 | 19 | ▲ 18.8% |
| July | 16 | 6 | ▼ 62.5% |
| August | 14 | – | – |
| September | 13 | – | – |
| October | 23 | – | in progress |
| November | 1 | – | – |
| 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 periods15 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | – | 80.0% | – |
| February | – | 61.1% | – |
| March | 84.2% | 61.3% | ▼ 27.2% |
| April | 90.0% | 74.1% | ▼ 17.7% |
| May | – | 76.9% | – |
| June | 62.5% | 84.2% | ▲ 34.7% |
| July | 93.8% | 100.0% | ▲ 6.7% |
| August | 92.9% | – | – |
| September | 92.3% | – | – |
| October | 47.8% | – | in progress |
| November | 0.0% | – | – |
| 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 periods15 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | – | 1 | – |
| February | – | 0 | – |
| March | 0 | 1 | – |
| April | 0 | 0 | – |
| May | – | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 1 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | 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 99.1% 323
- Cancelled 0.9% 3
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 26, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
4| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| MDW MCI Chicago Midway International Airport – Kansas City International Airport | 650 | 10.3 min | 70.7% | 58 |
| MSY DEN Louis Armstrong New Orleans International Airport – Denver International Airport | 1,708 | 6.7 min | 78.0% | 50 |
| SMF BUR Sacramento International Airport – Hollywood Burbank/Bob Hope Airport | 577 | 8.7 min | 80.0% | 35 |
| STL MDW St. Louis Lambert International Airport – Chicago Midway International Airport | 404 | 25.8 min | 56.3% | 33 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 16 | 16 | 100.0% | 0 |
| November 2024 | 2 | 2 | 100.0% | 0 |
| March 2025 | 38 | 38 | 84.2% | 0 |
| April 2025 | 10 | 10 | 90.0% | 0 |
| June 2025 | 16 | 16 | 62.5% | 0 |
| July 2025 | 16 | 16 | 93.8% | 0 |
| August 2025 | 14 | 14 | 92.9% | 0 |
| September 2025 | 13 | 13 | 92.3% | 0 |
| October 2025 | 23 | 23 | 47.8% | 0 |
| November 2025 | 1 | 1 | 0.0% | 0 |
| January 2026 | 31 | 30 | 80.0% | 1 |
| February 2026 | 36 | 36 | 61.1% | 0 |
| March 2026 | 32 | 31 | 61.3% | 1 |
| April 2026 | 27 | 27 | 74.1% | 0 |
| May 2026 | 26 | 26 | 76.9% | 0 |
| June 2026 | 19 | 19 | 84.2% | 0 |
| July 2026 | 6 | 5 | 100.0% | 1 |