WN4085
WN4085 (Southwest Airlines) is a multi-stop service on 19 routes, busiest Baltimore to Nashville. Of 381 departures recorded from October 2024 to July 2026, 64.7% left on time, according to the US BTS.
- On-time departures64.7%of 381 flights
- Average delay19.4 min
- July 202661▲ 103.3%vs July 2025
- Cancelled1.8%
- Legs flown under this number19
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods17 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 11 | 1 | ▼ 90.9% |
| February | 17 | 1 | ▼ 94.1% |
| March | 3 | – | – |
| April | – | 3 | – |
| May | 1 | 6 | ▲ 500.0% |
| June | 26 | 55 | ▲ 111.5% |
| July | 30 | 61 | ▲ 103.3% |
| August | 30 | – | – |
| September | 30 | – | – |
| October | 18 | – | in progress |
| November | 14 | – | – |
| December | 5 | – | – |
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 periods17 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 60.0% | 100.0% | ▲ 66.7% |
| February | 70.6% | 100.0% | ▲ 41.7% |
| March | 66.7% | – | – |
| April | – | 33.3% | – |
| May | 100.0% | 33.3% | ▼ 66.7% |
| June | 92.3% | 59.3% | ▼ 35.8% |
| July | 96.7% | 39.0% | ▼ 59.7% |
| August | 56.7% | – | – |
| September | 69.0% | – | – |
| October | 50.0% | – | in progress |
| November | 50.0% | – | – |
| December | 40.0% | – | – |
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 periods17 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 1 | 0 | ▼ 100.0% |
| February | 0 | 0 | – |
| March | 0 | – | – |
| April | – | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 1 | – |
| July | 0 | 2 | – |
| August | 0 | – | – |
| September | 1 | – | – |
| October | 0 | – | in progress |
| November | 2 | – | – |
| 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 98.2% 374
- Cancelled 1.8% 7
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
4| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| BWI BNA Baltimore/Washington International Thurgood Marshall Airport – Nashville International Airport | 944 | 14.9 min | 77.4% | 63 |
| PHX SAT Phoenix Sky Harbor International Airport – San Antonio International Airport | 1,354 | 19.1 min | 60.7% | 57 |
| MDW MSP Chicago Midway International Airport – Minneapolis–Saint Paul International Airport / Wold–Chamberlain Field | 560 | 34.9 min | 35.2% | 57 |
| OGG HNL Kahului International Airport – Daniel K. Inouye International Airport | 162 | -2.8 min | 98.0% | 51 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 16 | 16 | 93.8% | 0 |
| November 2024 | 25 | 25 | 88.0% | 0 |
| December 2024 | 28 | 28 | 60.7% | 0 |
| January 2025 | 11 | 10 | 60.0% | 1 |
| February 2025 | 17 | 17 | 70.6% | 0 |
| March 2025 | 3 | 3 | 66.7% | 0 |
| May 2025 | 1 | 1 | 100.0% | 0 |
| June 2025 | 26 | 26 | 92.3% | 0 |
| July 2025 | 30 | 30 | 96.7% | 0 |
| August 2025 | 30 | 30 | 56.7% | 0 |
| September 2025 | 30 | 29 | 69.0% | 1 |
| October 2025 | 18 | 18 | 50.0% | 0 |
| November 2025 | 14 | 12 | 50.0% | 2 |
| December 2025 | 5 | 5 | 40.0% | 0 |
| January 2026 | 1 | 1 | 100.0% | 0 |
| February 2026 | 1 | 1 | 100.0% | 0 |
| April 2026 | 3 | 3 | 33.3% | 0 |
| May 2026 | 6 | 6 | 33.3% | 0 |
| June 2026 | 55 | 54 | 59.3% | 1 |
| July 2026 | 61 | 59 | 39.0% | 2 |