WN4845
WN4845 (Southwest Airlines) is a multi-stop service on 14 routes, busiest Detroit to Baltimore. Of 214 departures recorded from October 2024 to July 2026, 76.4% left on time, according to the US BTS.
- On-time departures76.4%of 214 flights
- Average delay10.1 min
- July 202622
- Cancelled0.9%
- Legs flown under this number14
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods11 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | – | 2 | – |
| February | – | 37 | – |
| March | 38 | 4 | ▼ 89.5% |
| April | 10 | 24 | ▲ 140.0% |
| May | – | 31 | – |
| June | – | 23 | – |
| July | – | 22 | – |
| August | – | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 3 | – | – |
| December | 9 | – | – |
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 periods11 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | – | 50.0% | – |
| February | – | 94.3% | – |
| March | 89.5% | 25.0% | ▼ 72.1% |
| April | 80.0% | 100.0% | ▲ 25.0% |
| May | – | 100.0% | – |
| June | – | 17.4% | – |
| July | – | 40.9% | – |
| August | – | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 100.0% | – | – |
| December | 55.6% | – | – |
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 periods11 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | – | 0 | – |
| February | – | 2 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | – | 0 | – |
| June | – | 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 99.1% 212
- Cancelled 0.9% 2
Share of all recorded flights in the period, all legs. · Oct 13, 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 |
|---|---|---|---|---|
| DTW BWI Detroit Metropolitan Wayne County Airport – Baltimore/Washington International Thurgood Marshall Airport | 657 | -2.7 min | 100.0% | 58 |
| SEA DEN Seattle–Tacoma International Airport – Denver International Airport | 1,645 | 39.4 min | 23.8% | 42 |
| ATL BWI Hartsfield Jackson Atlanta International Airport – Baltimore/Washington International Thurgood Marshall Airport | 928 | 2.9 min | 87.9% | 33 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 10 | 10 | 80.0% | 0 |
| November 2024 | 1 | 1 | 100.0% | 0 |
| March 2025 | 38 | 38 | 89.5% | 0 |
| April 2025 | 10 | 10 | 80.0% | 0 |
| November 2025 | 3 | 3 | 100.0% | 0 |
| December 2025 | 9 | 9 | 55.6% | 0 |
| January 2026 | 2 | 2 | 50.0% | 0 |
| February 2026 | 37 | 35 | 94.3% | 2 |
| March 2026 | 4 | 4 | 25.0% | 0 |
| April 2026 | 24 | 24 | 100.0% | 0 |
| May 2026 | 31 | 31 | 100.0% | 0 |
| June 2026 | 23 | 23 | 17.4% | 0 |
| July 2026 | 22 | 22 | 40.9% | 0 |