WN4657
WN4657 (Southwest Airlines) is a multi-stop service on 10 routes, busiest Manchester to Baltimore. Of 229 departures recorded from October 2024 to July 2026, 80.4% left on time, according to the US BTS.
- On-time departures80.4%of 229 flights
- Average delay6.1 min
- July 202630
- Cancelled0.0%
- Legs flown under this number10
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 | 2 | 27 | ▲ 1,250.0% |
| February | 2 | 24 | ▲ 1,100.0% |
| March | 1 | 4 | ▲ 300.0% |
| April | 3 | 3 | 0.0% |
| May | 3 | 5 | ▲ 66.7% |
| June | 1 | 27 | ▲ 2,600.0% |
| July | – | 30 | – |
| August | – | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 26 | – | – |
| December | 29 | – | – |
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 | 100.0% | 88.9% | ▼ 11.1% |
| February | 50.0% | 62.5% | ▲ 25.0% |
| March | 100.0% | 25.0% | ▼ 75.0% |
| April | 100.0% | 66.7% | ▼ 33.3% |
| May | 33.3% | 60.0% | ▲ 80.0% |
| June | 100.0% | 100.0% | 0.0% |
| July | – | 96.7% | – |
| August | – | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 73.1% | – | – |
| December | 62.1% | – | – |
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 | 0 | 0 | – |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | – | 0 | – |
| August | – | – | – |
| 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 100.0% 229
- Cancelled 0.0% 0
Share of all recorded flights in the period, all legs. · Oct 14, 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 |
|---|---|---|---|---|
| MHT BWI Manchester-Boston Regional Airport – Baltimore/Washington International Thurgood Marshall Airport | 606 | -6.0 min | 98.3% | 57 |
| STL CMH St. Louis Lambert International Airport – John Glenn Columbus International Airport | 657 | 9.9 min | 65.5% | 55 |
| MCI LAS Kansas City International Airport – Harry Reid International Airport | 1,829 | 9.7 min | 72.0% | 50 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 7 | 7 | 42.9% | 0 |
| November 2024 | 27 | 27 | 96.3% | 0 |
| December 2024 | 8 | 8 | 100.0% | 0 |
| January 2025 | 2 | 2 | 100.0% | 0 |
| February 2025 | 2 | 2 | 50.0% | 0 |
| March 2025 | 1 | 1 | 100.0% | 0 |
| April 2025 | 3 | 3 | 100.0% | 0 |
| May 2025 | 3 | 3 | 33.3% | 0 |
| June 2025 | 1 | 1 | 100.0% | 0 |
| November 2025 | 26 | 26 | 73.1% | 0 |
| December 2025 | 29 | 29 | 62.1% | 0 |
| January 2026 | 27 | 27 | 88.9% | 0 |
| February 2026 | 24 | 24 | 62.5% | 0 |
| March 2026 | 4 | 4 | 25.0% | 0 |
| April 2026 | 3 | 3 | 66.7% | 0 |
| May 2026 | 5 | 5 | 60.0% | 0 |
| June 2026 | 27 | 27 | 100.0% | 0 |
| July 2026 | 30 | 30 | 96.7% | 0 |