WN4475
WN4475 (Southwest Airlines) is a multi-stop service on 11 routes, busiest Detroit to Baltimore. Of 250 departures recorded from October 2024 to July 2026, 75.1% left on time, according to the US BTS.
- On-time departures75.1%of 250 flights
- Average delay14.8 min
- July 202621
- Cancelled0.4%
- Legs flown under this number11
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 | 3 | ▲ 200.0% |
| February | – | – | – |
| March | – | 8 | – |
| April | 32 | 1 | ▼ 96.9% |
| May | 45 | 1 | ▼ 97.8% |
| June | 5 | 20 | ▲ 300.0% |
| July | – | 21 | – |
| August | 27 | – | – |
| September | 30 | – | – |
| October | 1 | – | in progress |
| November | 4 | – | – |
| December | 11 | – | – |
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 | 100.0% | 66.7% | ▼ 33.3% |
| February | – | – | – |
| March | – | 57.1% | – |
| April | 90.6% | 100.0% | ▲ 10.3% |
| May | 93.3% | 100.0% | ▲ 7.1% |
| June | 100.0% | 40.0% | ▼ 60.0% |
| July | – | 33.3% | – |
| August | 70.4% | – | – |
| September | 86.7% | – | – |
| October | 100.0% | – | in progress |
| November | 75.0% | – | – |
| December | 63.6% | – | – |
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 periods15 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | – | – | – |
| March | – | 1 | – |
| 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 99.6% 249
- 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 |
|---|---|---|---|---|
| TPA ATL Tampa International Airport – Hartsfield Jackson Atlanta International Airport | 655 | 15.2 min | 79.3% | 58 |
| DTW BWI Detroit Metropolitan Wayne County Airport – Baltimore/Washington International Thurgood Marshall Airport | 657 | 0.7 min | 96.6% | 58 |
| BNA MSY Nashville International Airport – Louis Armstrong New Orleans International Airport | 759 | 33.8 min | 36.6% | 41 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 19 | 19 | 79.0% | 0 |
| November 2024 | 15 | 15 | 73.3% | 0 |
| December 2024 | 6 | 6 | 83.3% | 0 |
| January 2025 | 1 | 1 | 100.0% | 0 |
| April 2025 | 32 | 32 | 90.6% | 0 |
| May 2025 | 45 | 45 | 93.3% | 0 |
| June 2025 | 5 | 5 | 100.0% | 0 |
| August 2025 | 27 | 27 | 70.4% | 0 |
| September 2025 | 30 | 30 | 86.7% | 0 |
| October 2025 | 1 | 1 | 100.0% | 0 |
| November 2025 | 4 | 4 | 75.0% | 0 |
| December 2025 | 11 | 11 | 63.6% | 0 |
| January 2026 | 3 | 3 | 66.7% | 0 |
| March 2026 | 8 | 7 | 57.1% | 1 |
| April 2026 | 1 | 1 | 100.0% | 0 |
| May 2026 | 1 | 1 | 100.0% | 0 |
| June 2026 | 20 | 20 | 40.0% | 0 |
| July 2026 | 21 | 21 | 33.3% | 0 |