WN4244
WN4244 (Southwest Airlines) is a multi-stop service on 27 routes, busiest Baltimore to Rochester. Of 402 departures recorded from October 2024 to July 2026, 73.2% left on time, according to the US BTS.
- On-time departures73.2%of 402 flights
- Average delay13.5 min
- July 202617▼ 26.1%vs July 2025
- Cancelled0.8%
- Legs flown under this number27
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 | 25 | 4 | ▼ 84.0% |
| February | 18 | 13 | ▼ 27.8% |
| March | 30 | 5 | ▼ 83.3% |
| April | 27 | 22 | ▼ 18.5% |
| May | 27 | 26 | ▼ 3.7% |
| June | 22 | 15 | ▼ 31.8% |
| July | 23 | 17 | ▼ 26.1% |
| August | 2 | – | – |
| September | – | – | – |
| October | 58 | – | in progress |
| November | 1 | – | – |
| December | 5 | – | – |
| Year to date (Jan–Jul) | 172 | 102 | ▼ 40.7% |
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 | 88.0% | 100.0% | ▲ 13.6% |
| February | 72.2% | 38.5% | ▼ 46.7% |
| March | 78.6% | 80.0% | ▲ 1.8% |
| April | 63.0% | 72.7% | ▲ 15.5% |
| May | 63.0% | 56.0% | ▼ 11.1% |
| June | 63.6% | 40.0% | ▼ 37.1% |
| July | 82.6% | 35.3% | ▼ 57.3% |
| August | 100.0% | – | – |
| September | – | – | – |
| October | 84.5% | – | in progress |
| November | 100.0% | – | – |
| December | 40.0% | – | – |
| Year-to-date average (Jan–Jul) | 73.0% | 60.4% | ▼ 17.3% |
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 | 0 | 0 | – |
| March | 2 | 0 | ▼ 100.0% |
| April | 0 | 0 | – |
| May | 0 | 1 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | – | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 2 | 1 | ▼ 50.0% |
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 99.3% 399
- Cancelled 0.7% 3
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 |
|---|---|---|---|---|
| BWI ROC Baltimore/Washington International Thurgood Marshall Airport – Frederick Douglass Greater Rochester International Airport | 447 | 5.9 min | 87.8% | 83 |
| SJC LAS Mineta San Jose International Airport – Harry Reid International Airport | 620 | 14.7 min | 61.2% | 50 |
| PHX MSY Phoenix Sky Harbor International Airport – Louis Armstrong New Orleans International Airport | 2,088 | 28.5 min | 64.0% | 50 |
| TPA STL Tampa International Airport – St. Louis Lambert International Airport | 1,400 | 8.6 min | 74.4% | 43 |
| BWI STL Baltimore/Washington International Thurgood Marshall Airport – St. Louis Lambert International Airport | 1,185 | 14.2 min | 71.9% | 33 |
| PHX SAT Phoenix Sky Harbor International Airport – San Antonio International Airport | 1,354 | 4.6 min | 83.9% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 100.0% | 0 |
| November 2024 | 23 | 23 | 95.7% | 0 |
| December 2024 | 19 | 19 | 89.5% | 0 |
| January 2025 | 25 | 25 | 88.0% | 0 |
| February 2025 | 18 | 18 | 72.2% | 0 |
| March 2025 | 30 | 28 | 78.6% | 2 |
| April 2025 | 27 | 27 | 63.0% | 0 |
| May 2025 | 27 | 27 | 63.0% | 0 |
| June 2025 | 22 | 22 | 63.6% | 0 |
| July 2025 | 23 | 23 | 82.6% | 0 |
| August 2025 | 2 | 2 | 100.0% | 0 |
| October 2025 | 58 | 58 | 84.5% | 0 |
| November 2025 | 1 | 1 | 100.0% | 0 |
| December 2025 | 5 | 5 | 40.0% | 0 |
| January 2026 | 4 | 4 | 100.0% | 0 |
| February 2026 | 13 | 13 | 38.5% | 0 |
| March 2026 | 5 | 5 | 80.0% | 0 |
| April 2026 | 22 | 22 | 72.7% | 0 |
| May 2026 | 26 | 25 | 56.0% | 1 |
| June 2026 | 15 | 15 | 40.0% | 0 |
| July 2026 | 17 | 17 | 35.3% | 0 |