WN4630
WN4630 (Southwest Airlines) is a multi-stop service on 12 routes, busiest Baltimore to Rochester. Of 245 departures recorded from October 2024 to July 2026, 67.8% left on time, according to the US BTS.
- On-time departures67.8%of 245 flights
- Average delay16.6 min
- July 202617
- Cancelled1.2%
- Legs flown under this number12
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 | 1 | 27 | ▲ 2,600.0% |
| February | – | 28 | – |
| March | – | 50 | – |
| April | 20 | 10 | ▼ 50.0% |
| May | 26 | 1 | ▼ 96.2% |
| June | 4 | 16 | ▲ 300.0% |
| July | – | 17 | – |
| August | 4 | – | – |
| September | 4 | – | – |
| 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 | 0.0% | 73.1% | – |
| February | – | 63.0% | – |
| March | – | 68.0% | – |
| April | 80.0% | 80.0% | 0.0% |
| May | 76.9% | 100.0% | ▲ 30.0% |
| June | 100.0% | 43.8% | ▼ 56.3% |
| July | – | 18.8% | – |
| August | 75.0% | – | – |
| September | 75.0% | – | – |
| October | – | – | in progress |
| November | 100.0% | – | – |
| December | 0.0% | – | – |
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 | 0 | 1 | – |
| February | – | 1 | – |
| March | – | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | – | 1 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| 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 98.8% 242
- Cancelled 1.2% 3
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 29, 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 |
|---|---|---|---|---|
| BWI ROC Baltimore/Washington International Thurgood Marshall Airport – Frederick Douglass Greater Rochester International Airport | 447 | 13.3 min | 66.1% | 58 |
| DCA HOU Ronald Reagan Washington National Airport – William P. Hobby Airport | 1,959 | 13.0 min | 80.0% | 50 |
| BNA RIC Nashville International Airport – Richmond International Airport | 847 | 17.7 min | 69.7% | 33 |
| BNA PNS Nashville International Airport – Pensacola International Airport | 630 | 37.9 min | 32.3% | 32 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 13 | 13 | 84.6% | 0 |
| November 2024 | 15 | 15 | 80.0% | 0 |
| December 2024 | 4 | 4 | 75.0% | 0 |
| January 2025 | 1 | 1 | 0.0% | 0 |
| April 2025 | 20 | 20 | 80.0% | 0 |
| May 2025 | 26 | 26 | 76.9% | 0 |
| June 2025 | 4 | 4 | 100.0% | 0 |
| August 2025 | 4 | 4 | 75.0% | 0 |
| September 2025 | 4 | 4 | 75.0% | 0 |
| November 2025 | 3 | 3 | 100.0% | 0 |
| December 2025 | 2 | 2 | 0.0% | 0 |
| January 2026 | 27 | 26 | 73.1% | 1 |
| February 2026 | 28 | 27 | 63.0% | 1 |
| March 2026 | 50 | 50 | 68.0% | 0 |
| April 2026 | 10 | 10 | 80.0% | 0 |
| May 2026 | 1 | 1 | 100.0% | 0 |
| June 2026 | 16 | 16 | 43.8% | 0 |
| July 2026 | 17 | 16 | 18.8% | 1 |