WN4545
WN4545 (Southwest Airlines) is a multi-stop service on 16 routes, busiest Rochester to Baltimore. Of 406 departures recorded from October 2024 to July 2026, 75.1% left on time, according to the US BTS.
- On-time departures75.1%of 406 flights
- Average delay12.2 min
- July 202623
- Cancelled0.0%
- Legs flown under this number16
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods16 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 4 | 33 | ▲ 725.0% |
| February | – | 28 | – |
| March | – | 31 | – |
| April | 21 | 27 | ▲ 28.6% |
| May | 33 | 25 | ▼ 24.2% |
| June | 2 | 22 | ▲ 1,000.0% |
| July | – | 23 | – |
| August | 27 | – | – |
| September | 30 | – | – |
| October | 1 | – | in progress |
| November | 30 | – | – |
| December | 40 | – | – |
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 periods16 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 50.0% | 87.9% | ▲ 75.8% |
| February | – | 57.1% | – |
| March | – | 61.3% | – |
| April | 66.7% | 66.7% | 0.0% |
| May | 72.7% | 36.0% | ▼ 50.5% |
| June | 100.0% | 86.4% | ▼ 13.6% |
| July | – | 91.3% | – |
| August | 96.3% | – | – |
| September | 93.3% | – | – |
| October | 100.0% | – | in progress |
| November | 83.3% | – | – |
| December | 75.0% | – | – |
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 periods16 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | – | 0 | – |
| March | – | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | – | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | 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% 406
- 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
6| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| ROC BWI Frederick Douglass Greater Rochester International Airport – Baltimore/Washington International Thurgood Marshall Airport | 447 | 1.4 min | 94.8% | 58 |
| LAX MDW Los Angeles International Airport – Chicago Midway International Airport | 2,812 | 12.5 min | 74.1% | 58 |
| STL AUS St. Louis Lambert International Airport – Austin Bergstrom International Airport | 1,161 | 8.0 min | 80.4% | 46 |
| TPA BWI Tampa International Airport – Baltimore/Washington International Thurgood Marshall Airport | 1,358 | 32.1 min | 45.2% | 42 |
| MCO PVD Orlando International Airport – Rhode Island T. F. Green International Airport | 1,728 | 3.5 min | 90.5% | 42 |
| STL LAS St. Louis Lambert International Airport – Harry Reid International Airport | 2,202 | 21.7 min | 60.6% | 33 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 13 | 13 | 76.9% | 0 |
| November 2024 | 5 | 5 | 100.0% | 0 |
| December 2024 | 11 | 11 | 63.6% | 0 |
| January 2025 | 4 | 4 | 50.0% | 0 |
| April 2025 | 21 | 21 | 66.7% | 0 |
| May 2025 | 33 | 33 | 72.7% | 0 |
| June 2025 | 2 | 2 | 100.0% | 0 |
| August 2025 | 27 | 27 | 96.3% | 0 |
| September 2025 | 30 | 30 | 93.3% | 0 |
| October 2025 | 1 | 1 | 100.0% | 0 |
| November 2025 | 30 | 30 | 83.3% | 0 |
| December 2025 | 40 | 40 | 75.0% | 0 |
| January 2026 | 33 | 33 | 87.9% | 0 |
| February 2026 | 28 | 28 | 57.1% | 0 |
| March 2026 | 31 | 31 | 61.3% | 0 |
| April 2026 | 27 | 27 | 66.7% | 0 |
| May 2026 | 25 | 25 | 36.0% | 0 |
| June 2026 | 22 | 22 | 86.4% | 0 |
| July 2026 | 23 | 23 | 91.3% | 0 |