WN4357
WN4357 (Southwest Airlines) is a multi-stop service on 18 routes, busiest Fort Myers to Baltimore. Of 449 departures recorded from October 2024 to July 2026, 70.8% left on time, according to the US BTS.
- On-time departures70.8%of 449 flights
- Average delay16.0 min
- July 202627▼ 52.6%vs July 2025
- Cancelled0.2%
- Legs flown under this number18
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods18 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 11 | 6 | ▼ 45.5% |
| February | 15 | 12 | ▼ 20.0% |
| March | 2 | 1 | ▼ 50.0% |
| April | 23 | 10 | ▼ 56.5% |
| May | 31 | 14 | ▼ 54.8% |
| June | 52 | 24 | ▼ 53.8% |
| July | 57 | 27 | ▼ 52.6% |
| August | 23 | – | – |
| September | 17 | – | – |
| October | – | – | in progress |
| November | 30 | – | – |
| December | 33 | – | – |
| Year to date (Jan–Jul) | 191 | 94 | ▼ 50.8% |
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 periods18 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 63.6% | 66.7% | ▲ 4.8% |
| February | 78.6% | 83.3% | ▲ 6.1% |
| March | 0.0% | 100.0% | – |
| April | 87.0% | 80.0% | ▼ 8.0% |
| May | 61.3% | 78.6% | ▲ 28.2% |
| June | 65.4% | 37.5% | ▼ 42.6% |
| July | 56.1% | 66.7% | ▲ 18.8% |
| August | 65.2% | – | – |
| September | 88.2% | – | – |
| October | – | – | in progress |
| November | 80.0% | – | – |
| December | 72.7% | – | – |
| Year-to-date average (Jan–Jul) | 58.9% | 73.2% | ▲ 24.5% |
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 periods18 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | 1 | 0 | ▼ 100.0% |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | – | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 1 | 0 | ▼ 100.0% |
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 99.8% 448
- Cancelled 0.2% 1
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
6| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| RSW BWI Southwest Florida International Airport – Baltimore/Washington International Thurgood Marshall Airport | 1,483 | 16.5 min | 81.3% | 81 |
| SAN HOU San Diego International Airport – William P. Hobby Airport | 2,109 | 22.0 min | 51.7% | 60 |
| OAK EUG Oakland San Francisco Bay Airport – Eugene Airport | 717 | 15.7 min | 72.4% | 58 |
| SJC MDW Mineta San Jose International Airport – Chicago Midway International Airport | 2,950 | 20.2 min | 54.0% | 50 |
| SMF BUR Sacramento International Airport – Hollywood Burbank/Bob Hope Airport | 577 | 14.6 min | 71.7% | 46 |
| SMF SNA Sacramento International Airport – John Wayne Orange County International Airport | 650 | 1.5 min | 87.5% | 32 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 7 | 7 | 100.0% | 0 |
| November 2024 | 26 | 26 | 96.2% | 0 |
| December 2024 | 28 | 28 | 82.1% | 0 |
| January 2025 | 11 | 11 | 63.6% | 0 |
| February 2025 | 15 | 14 | 78.6% | 1 |
| March 2025 | 2 | 2 | 0.0% | 0 |
| April 2025 | 23 | 23 | 87.0% | 0 |
| May 2025 | 31 | 31 | 61.3% | 0 |
| June 2025 | 52 | 52 | 65.4% | 0 |
| July 2025 | 57 | 57 | 56.1% | 0 |
| August 2025 | 23 | 23 | 65.2% | 0 |
| September 2025 | 17 | 17 | 88.2% | 0 |
| November 2025 | 30 | 30 | 80.0% | 0 |
| December 2025 | 33 | 33 | 72.7% | 0 |
| January 2026 | 6 | 6 | 66.7% | 0 |
| February 2026 | 12 | 12 | 83.3% | 0 |
| March 2026 | 1 | 1 | 100.0% | 0 |
| April 2026 | 10 | 10 | 80.0% | 0 |
| May 2026 | 14 | 14 | 78.6% | 0 |
| June 2026 | 24 | 24 | 37.5% | 0 |
| July 2026 | 27 | 27 | 66.7% | 0 |