WN4816
WN4816 (Southwest Airlines) is a multi-stop service on 13 routes, busiest Jacksonville to Chicago. Of 225 departures recorded from October 2024 to July 2026, 82.6% left on time, according to the US BTS.
- On-time departures82.6%of 225 flights
- Average delay5.7 min
- July 202623
- Cancelled0.4%
- Legs flown under this number13
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 | 25 | 3 | ▼ 88.0% |
| February | 26 | 2 | ▼ 92.3% |
| March | 31 | – | – |
| April | 7 | 3 | ▼ 57.1% |
| May | – | 4 | – |
| June | – | 18 | – |
| July | – | 23 | – |
| August | – | – | – |
| September | – | – | – |
| October | 12 | – | in progress |
| November | 6 | – | – |
| December | 11 | – | – |
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 | 88.0% | 33.3% | ▼ 62.1% |
| February | 88.5% | 50.0% | ▼ 43.5% |
| March | 96.8% | – | – |
| April | 85.7% | 33.3% | ▼ 61.1% |
| May | – | 25.0% | – |
| June | – | 88.9% | – |
| July | – | 95.5% | – |
| August | – | – | – |
| September | – | – | – |
| October | 100.0% | – | in progress |
| November | 83.3% | – | – |
| December | 18.2% | – | – |
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 | 0 | – |
| March | 0 | – | – |
| April | 0 | 0 | – |
| May | – | 0 | – |
| June | – | 0 | – |
| July | – | 1 | – |
| August | – | – | – |
| September | – | – | – |
| 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 99.6% 224
- Cancelled 0.4% 1
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 |
|---|---|---|---|---|
| JAX MDW Jacksonville International Airport – Chicago Midway International Airport | 1,368 | 3.5 min | 86.4% | 81 |
| BWI ISP Baltimore/Washington International Thurgood Marshall Airport – Long Island MacArthur Airport | 353 | -1.2 min | 92.5% | 41 |
| MYR BWI Myrtle Beach International Airport – Baltimore/Washington International Thurgood Marshall Airport | 644 | -1.3 min | 97.0% | 33 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 10 | 10 | 60.0% | 0 |
| November 2024 | 24 | 24 | 79.2% | 0 |
| December 2024 | 20 | 20 | 95.0% | 0 |
| January 2025 | 25 | 25 | 88.0% | 0 |
| February 2025 | 26 | 26 | 88.5% | 0 |
| March 2025 | 31 | 31 | 96.8% | 0 |
| April 2025 | 7 | 7 | 85.7% | 0 |
| October 2025 | 12 | 12 | 100.0% | 0 |
| November 2025 | 6 | 6 | 83.3% | 0 |
| December 2025 | 11 | 11 | 18.2% | 0 |
| January 2026 | 3 | 3 | 33.3% | 0 |
| February 2026 | 2 | 2 | 50.0% | 0 |
| April 2026 | 3 | 3 | 33.3% | 0 |
| May 2026 | 4 | 4 | 25.0% | 0 |
| June 2026 | 18 | 18 | 88.9% | 0 |
| July 2026 | 23 | 22 | 95.5% | 1 |