WN4374
WN4374 (Southwest Airlines) is a multi-stop service on 12 routes, busiest Baltimore to Tampa. Of 433 departures recorded from October 2024 to July 2026, 72.7% left on time, according to the US BTS.
- On-time departures72.7%of 433 flights
- Average delay15.9 min
- July 202627
- Cancelled0.9%
- Legs flown under this number12
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 | 27 | 6 | ▼ 77.8% |
| February | 28 | – | – |
| March | 31 | – | – |
| April | 27 | 24 | ▼ 11.1% |
| May | 25 | 31 | ▲ 24.0% |
| June | 4 | 26 | ▲ 550.0% |
| July | – | 27 | – |
| August | 27 | – | – |
| September | 30 | – | – |
| October | 31 | – | in progress |
| November | 27 | – | – |
| December | 29 | – | – |
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 | 92.3% | 66.7% | ▼ 27.8% |
| February | 57.1% | – | – |
| March | 75.9% | – | – |
| April | 66.7% | 66.7% | 0.0% |
| May | 76.0% | 77.4% | ▲ 1.9% |
| June | 50.0% | 69.2% | ▲ 38.5% |
| July | – | 37.0% | – |
| August | 85.2% | – | – |
| September | 75.9% | – | – |
| October | 83.9% | – | in progress |
| November | 77.8% | – | – |
| December | 75.9% | – | – |
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 | 1 | 0 | ▼ 100.0% |
| February | 0 | – | – |
| March | 2 | – | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | – | 0 | – |
| August | 0 | – | – |
| September | 1 | – | – |
| 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 99.1% 429
- Cancelled 0.9% 4
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
8| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| BWI TPA Baltimore/Washington International Thurgood Marshall Airport – Tampa International Airport | 1,358 | 13.4 min | 75.3% | 83 |
| SNA SMF John Wayne Orange County International Airport – Sacramento International Airport | 650 | 9.6 min | 80.7% | 58 |
| SMF SEA Sacramento International Airport – Seattle–Tacoma International Airport | 975 | 13.3 min | 72.4% | 58 |
| BWI MCO Baltimore/Washington International Thurgood Marshall Airport – Orlando International Airport | 1,269 | 33.3 min | 52.0% | 50 |
| MCI MKE Kansas City International Airport – General Mitchell International Airport | 700 | 13.7 min | 71.4% | 49 |
| SMF ONT Sacramento International Airport – Ontario International Airport | 627 | 13.7 min | 81.0% | 42 |
| RSW IND Southwest Florida International Airport – Indianapolis International Airport | 1,525 | 22.9 min | 68.8% | 33 |
| SAN OAK San Diego International Airport – Oakland San Francisco Bay Airport | 718 | 9.0 min | 83.9% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 9 | 9 | 77.8% | 0 |
| November 2024 | 9 | 9 | 88.9% | 0 |
| December 2024 | 15 | 15 | 66.7% | 0 |
| January 2025 | 27 | 26 | 92.3% | 1 |
| February 2025 | 28 | 28 | 57.1% | 0 |
| March 2025 | 31 | 29 | 75.9% | 2 |
| April 2025 | 27 | 27 | 66.7% | 0 |
| May 2025 | 25 | 25 | 76.0% | 0 |
| June 2025 | 4 | 4 | 50.0% | 0 |
| August 2025 | 27 | 27 | 85.2% | 0 |
| September 2025 | 30 | 29 | 75.9% | 1 |
| October 2025 | 31 | 31 | 83.9% | 0 |
| November 2025 | 27 | 27 | 77.8% | 0 |
| December 2025 | 29 | 29 | 75.9% | 0 |
| January 2026 | 6 | 6 | 66.7% | 0 |
| April 2026 | 24 | 24 | 66.7% | 0 |
| May 2026 | 31 | 31 | 77.4% | 0 |
| June 2026 | 26 | 26 | 69.2% | 0 |
| July 2026 | 27 | 27 | 37.0% | 0 |