WN3879
WN3879 (Southwest Airlines) is a multi-stop service on 20 routes, busiest Sarasota to Chicago. Of 266 departures recorded from October 2024 to July 2026, 68.9% left on time, according to the US BTS.
- On-time departures68.9%of 266 flights
- Average delay14.8 min
- July 202627▲ 350.0%vs July 2025
- Cancelled0.8%
- Legs flown under this number20
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods16 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 3 | 5 | ▲ 66.7% |
| February | 8 | – | – |
| March | 39 | 27 | ▼ 30.8% |
| April | 14 | 6 | ▼ 57.1% |
| May | 5 | – | – |
| June | 5 | 23 | ▲ 360.0% |
| July | 6 | 27 | ▲ 350.0% |
| August | 1 | – | – |
| September | – | – | – |
| October | 4 | – | in progress |
| November | 29 | – | – |
| December | 19 | – | – |
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 periods16 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 66.7% | 80.0% | ▲ 20.0% |
| February | 100.0% | – | – |
| March | 76.9% | 52.0% | ▼ 32.4% |
| April | 50.0% | 66.7% | ▲ 33.3% |
| May | 80.0% | – | – |
| June | 60.0% | 60.9% | ▲ 1.4% |
| July | 66.7% | 37.0% | ▼ 44.4% |
| August | 100.0% | – | – |
| September | – | – | – |
| October | 75.0% | – | in progress |
| November | 79.3% | – | – |
| December | 73.7% | – | – |
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 periods16 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | 0 | – | – |
| March | 0 | 2 | – |
| April | 0 | 0 | – |
| May | 0 | – | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| 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 99.2% 264
- Cancelled 0.8% 2
Share of all recorded flights in the period, all legs. · Oct 12, 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 |
|---|---|---|---|---|
| SRQ MDW Sarasota Bradenton International Airport – Chicago Midway International Airport | 1,669 | 22.5 min | 48.0% | 50 |
| MCO MKE Orlando International Airport – General Mitchell International Airport | 1,719 | 23.3 min | 54.8% | 33 |
| BWI PWM Baltimore/Washington International Thurgood Marshall Airport – Portland International Jetport | 727 | 20.5 min | 60.6% | 33 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 17 | 17 | 82.4% | 0 |
| November 2024 | 19 | 19 | 89.5% | 0 |
| December 2024 | 9 | 9 | 77.8% | 0 |
| January 2025 | 3 | 3 | 66.7% | 0 |
| February 2025 | 8 | 8 | 100.0% | 0 |
| March 2025 | 39 | 39 | 76.9% | 0 |
| April 2025 | 14 | 14 | 50.0% | 0 |
| May 2025 | 5 | 5 | 80.0% | 0 |
| June 2025 | 5 | 5 | 60.0% | 0 |
| July 2025 | 6 | 6 | 66.7% | 0 |
| August 2025 | 1 | 1 | 100.0% | 0 |
| October 2025 | 4 | 4 | 75.0% | 0 |
| November 2025 | 29 | 29 | 79.3% | 0 |
| December 2025 | 19 | 19 | 73.7% | 0 |
| January 2026 | 5 | 5 | 80.0% | 0 |
| March 2026 | 27 | 25 | 52.0% | 2 |
| April 2026 | 6 | 6 | 66.7% | 0 |
| June 2026 | 23 | 23 | 60.9% | 0 |
| July 2026 | 27 | 27 | 37.0% | 0 |