WN4597
WN4597 (Southwest Airlines) is a multi-stop service on 11 routes, busiest Fort Lauderdale to Baltimore. Of 322 departures recorded from October 2024 to July 2026, 78.9% left on time, according to the US BTS.
- On-time departures78.9%of 322 flights
- Average delay12.1 min
- July 202623▼ 4.2%vs July 2025
- Cancelled3.1%
- 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 | 30 | 1 | ▼ 96.7% |
| February | 28 | – | – |
| March | 25 | 20 | ▼ 20.0% |
| April | 5 | 29 | ▲ 480.0% |
| May | – | 31 | – |
| June | 18 | 22 | ▲ 22.2% |
| July | 24 | 23 | ▼ 4.2% |
| August | 2 | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 3 | – | – |
| December | 2 | – | – |
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 | 68.0% | 100.0% | ▲ 47.1% |
| February | 70.4% | – | – |
| March | 76.0% | 68.4% | ▼ 10.0% |
| April | 80.0% | 96.6% | ▲ 20.7% |
| May | – | 100.0% | – |
| June | 72.2% | 57.1% | ▼ 20.9% |
| July | 87.0% | 72.7% | ▼ 16.4% |
| August | 100.0% | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 100.0% | – | – |
| December | 50.0% | – | – |
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 | 5 | 0 | ▼ 100.0% |
| February | 1 | – | – |
| March | 0 | 1 | – |
| April | 0 | 0 | – |
| May | – | 0 | – |
| June | 0 | 1 | – |
| July | 1 | 1 | 0.0% |
| August | 0 | – | – |
| September | – | – | – |
| October | – | – | 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 96.9% 312
- Cancelled 3.1% 10
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
4| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| FLL BWI Fort Lauderdale Hollywood International Airport – Baltimore/Washington International Thurgood Marshall Airport | 1,493 | 11.2 min | 72.5% | 104 |
| TUS DEN Tucson International Airport – Denver International Airport | 1,029 | -0.5 min | 100.0% | 58 |
| SNA SJC John Wayne Orange County International Airport – Mineta San Jose International Airport | 550 | 9.4 min | 81.0% | 43 |
| MDW SDF Chicago Midway International Airport – Louisville Muhammad Ali International Airport | 437 | 33.3 min | 62.5% | 42 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 17 | 17 | 82.4% | 0 |
| November 2024 | 16 | 16 | 81.3% | 0 |
| December 2024 | 26 | 26 | 76.9% | 0 |
| January 2025 | 30 | 25 | 68.0% | 5 |
| February 2025 | 28 | 27 | 70.4% | 1 |
| March 2025 | 25 | 25 | 76.0% | 0 |
| April 2025 | 5 | 5 | 80.0% | 0 |
| June 2025 | 18 | 18 | 72.2% | 0 |
| July 2025 | 24 | 23 | 87.0% | 1 |
| August 2025 | 2 | 2 | 100.0% | 0 |
| November 2025 | 3 | 3 | 100.0% | 0 |
| December 2025 | 2 | 2 | 50.0% | 0 |
| January 2026 | 1 | 1 | 100.0% | 0 |
| March 2026 | 20 | 19 | 68.4% | 1 |
| April 2026 | 29 | 29 | 96.6% | 0 |
| May 2026 | 31 | 31 | 100.0% | 0 |
| June 2026 | 22 | 21 | 57.1% | 1 |
| July 2026 | 23 | 22 | 72.7% | 1 |