WN4800
WN4800 (Southwest Airlines) is a multi-stop service on 10 routes, busiest Baltimore to Rochester. Of 245 departures recorded from October 2024 to July 2026, 63.1% left on time, according to the US BTS.
- On-time departures63.1%of 245 flights
- Average delay20.1 min
- July 202630
- Cancelled0.4%
- 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 periods9 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 26 | 26 | 0.0% |
| February | 21 | 18 | ▼ 14.3% |
| March | 4 | 3 | ▼ 25.0% |
| April | – | – | – |
| May | – | – | – |
| June | – | 27 | – |
| July | – | 30 | – |
| August | – | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | – | – | – |
| December | 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 periods9 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 72.0% | 84.6% | ▲ 17.5% |
| February | 61.9% | 66.7% | ▲ 7.7% |
| March | 100.0% | 66.7% | ▼ 33.3% |
| April | – | – | – |
| May | – | – | – |
| June | – | 37.0% | – |
| July | – | 56.7% | – |
| August | – | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | – | – | – |
| December | 100.0% | – | – |
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 periods9 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 1 | 0 | ▼ 100.0% |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | – | – | – |
| May | – | – | – |
| June | – | 0 | – |
| July | – | 0 | – |
| August | – | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | – | – | – |
| 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 99.6% 244
- Cancelled 0.4% 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
3| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| BWI ROC Baltimore/Washington International Thurgood Marshall Airport – Frederick Douglass Greater Rochester International Airport | 447 | 18.8 min | 61.1% | 109 |
| HOU MAF William P. Hobby Airport – Midland International Air and Space Port | 709 | 34.6 min | 46.4% | 56 |
| LAS SFO Harry Reid International Airport – San Francisco International Airport | 665 | 15.6 min | 76.6% | 47 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 26 | 26 | 80.8% | 0 |
| November 2024 | 29 | 29 | 55.2% | 0 |
| December 2024 | 34 | 34 | 52.9% | 0 |
| January 2025 | 26 | 25 | 72.0% | 1 |
| February 2025 | 21 | 21 | 61.9% | 0 |
| March 2025 | 4 | 4 | 100.0% | 0 |
| December 2025 | 1 | 1 | 100.0% | 0 |
| January 2026 | 26 | 26 | 84.6% | 0 |
| February 2026 | 18 | 18 | 66.7% | 0 |
| March 2026 | 3 | 3 | 66.7% | 0 |
| June 2026 | 27 | 27 | 37.0% | 0 |
| July 2026 | 30 | 30 | 56.7% | 0 |