WN4546
WN4546 (Southwest Airlines) is a multi-stop service on 22 routes, busiest Chicago to Tampa. Of 344 departures recorded from October 2024 to July 2026, 66.6% left on time, according to the US BTS.
- On-time departures66.6%of 344 flights
- Average delay17.0 min
- July 202630▲ 11.1%vs July 2025
- Cancelled1.7%
- Legs flown under this number22
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods17 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 4 | 6 | ▲ 50.0% |
| February | 8 | 8 | 0.0% |
| March | 23 | 5 | ▼ 78.3% |
| April | 27 | 22 | ▼ 18.5% |
| May | 31 | 25 | ▼ 19.4% |
| June | 25 | 30 | ▲ 20.0% |
| July | 27 | 30 | ▲ 11.1% |
| August | 3 | – | – |
| September | – | – | – |
| October | 21 | – | in progress |
| November | 1 | – | – |
| December | – | – | – |
| Year to date (Jan–Jul) | 145 | 126 | ▼ 13.1% |
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 periods17 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 25.0% | 83.3% | ▲ 233.3% |
| February | 100.0% | 62.5% | ▼ 37.5% |
| March | 87.0% | 40.0% | ▼ 54.0% |
| April | 51.9% | 54.6% | ▲ 5.2% |
| May | 71.0% | 36.0% | ▼ 49.3% |
| June | 87.0% | 51.7% | ▼ 40.5% |
| July | 96.3% | 20.7% | ▼ 78.5% |
| August | 100.0% | – | – |
| September | – | – | – |
| October | 95.2% | – | in progress |
| November | 100.0% | – | – |
| December | – | – | – |
| Year-to-date average (Jan–Jul) | 74.0% | 49.8% | ▼ 32.7% |
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 periods17 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 2 | 1 | ▼ 50.0% |
| July | 0 | 1 | – |
| August | 0 | – | – |
| September | – | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | – | – | – |
| Year to date (Jan–Jul) | 2 | 2 | 0.0% |
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 98.3% 338
- Cancelled 1.7% 6
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 TPA Chicago Midway International Airport – Tampa International Airport | 1,607 | 30.6 min | 32.7% | 57 |
| SMF BUR Sacramento International Airport – Hollywood Burbank/Bob Hope Airport | 577 | -0.8 min | 94.0% | 52 |
| TPA BWI Tampa International Airport – Baltimore/Washington International Thurgood Marshall Airport | 1,358 | 29.9 min | 49.0% | 49 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 13 | 13 | 76.9% | 0 |
| November 2024 | 18 | 18 | 88.9% | 0 |
| December 2024 | 17 | 15 | 66.7% | 2 |
| January 2025 | 4 | 4 | 25.0% | 0 |
| February 2025 | 8 | 8 | 100.0% | 0 |
| March 2025 | 23 | 23 | 87.0% | 0 |
| April 2025 | 27 | 27 | 51.9% | 0 |
| May 2025 | 31 | 31 | 71.0% | 0 |
| June 2025 | 25 | 23 | 87.0% | 2 |
| July 2025 | 27 | 27 | 96.3% | 0 |
| August 2025 | 3 | 3 | 100.0% | 0 |
| October 2025 | 21 | 21 | 95.2% | 0 |
| November 2025 | 1 | 1 | 100.0% | 0 |
| January 2026 | 6 | 6 | 83.3% | 0 |
| February 2026 | 8 | 8 | 62.5% | 0 |
| March 2026 | 5 | 5 | 40.0% | 0 |
| April 2026 | 22 | 22 | 54.6% | 0 |
| May 2026 | 25 | 25 | 36.0% | 0 |
| June 2026 | 30 | 29 | 51.7% | 1 |
| July 2026 | 30 | 29 | 20.7% | 1 |