WN4899
WN4899 (Southwest Airlines) is a multi-stop service on 21 routes, busiest Chicago to Fort Lauderdale. Of 285 departures recorded from October 2024 to July 2026, 74.4% left on time, according to the US BTS.
- On-time departures74.4%of 285 flights
- Average delay12.3 min
- July 202627
- Cancelled1.4%
- Legs flown under this number21
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 | 29 | 6 | ▼ 79.3% |
| February | 26 | 2 | ▼ 92.3% |
| March | 39 | – | – |
| April | 9 | 1 | ▼ 88.9% |
| May | 1 | – | – |
| June | – | 23 | – |
| July | – | 27 | – |
| August | 8 | – | – |
| September | 9 | – | – |
| October | 1 | – | in progress |
| November | 1 | – | – |
| December | 6 | – | – |
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 | 79.3% | 100.0% | ▲ 26.1% |
| February | 82.6% | 100.0% | ▲ 21.1% |
| March | 76.9% | – | – |
| April | 55.6% | 100.0% | ▲ 80.0% |
| May | 100.0% | – | – |
| June | – | 34.8% | – |
| July | – | 42.3% | – |
| August | 62.5% | – | – |
| September | 88.9% | – | – |
| October | 100.0% | – | in progress |
| November | 0.0% | – | – |
| December | 83.3% | – | – |
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 | 0 | 0 | – |
| February | 3 | 0 | ▼ 100.0% |
| March | 0 | – | – |
| April | 0 | 0 | – |
| May | 0 | – | – |
| June | – | 0 | – |
| July | – | 1 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
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 98.6% 281
- Cancelled 1.4% 4
Share of all recorded flights in the period, all legs. · Oct 13, 2024 → Jul 31, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
3| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| MDW FLL Chicago Midway International Airport – Fort Lauderdale Hollywood International Airport | 1,881 | 41.1 min | 38.8% | 50 |
| LAS RNO Harry Reid International Airport – Reno Tahoe International Airport | 556 | 5.0 min | 83.0% | 50 |
| CMH LAS John Glenn Columbus International Airport – Harry Reid International Airport | 2,843 | 1.8 min | 89.8% | 49 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 10 | 10 | 100.0% | 0 |
| November 2024 | 47 | 47 | 76.6% | 0 |
| December 2024 | 40 | 40 | 95.0% | 0 |
| January 2025 | 29 | 29 | 79.3% | 0 |
| February 2025 | 26 | 23 | 82.6% | 3 |
| March 2025 | 39 | 39 | 76.9% | 0 |
| April 2025 | 9 | 9 | 55.6% | 0 |
| May 2025 | 1 | 1 | 100.0% | 0 |
| August 2025 | 8 | 8 | 62.5% | 0 |
| September 2025 | 9 | 9 | 88.9% | 0 |
| October 2025 | 1 | 1 | 100.0% | 0 |
| November 2025 | 1 | 1 | 0.0% | 0 |
| December 2025 | 6 | 6 | 83.3% | 0 |
| January 2026 | 6 | 6 | 100.0% | 0 |
| February 2026 | 2 | 2 | 100.0% | 0 |
| April 2026 | 1 | 1 | 100.0% | 0 |
| June 2026 | 23 | 23 | 34.8% | 0 |
| July 2026 | 27 | 26 | 42.3% | 1 |