WN4145
WN4145 (Southwest Airlines) is a multi-stop service on 19 routes, busiest West Palm Beach to Baltimore. Of 344 departures recorded from October 2024 to July 2026, 84.1% left on time, according to the US BTS.
- On-time departures84.1%of 344 flights
- Average delay6.5 min
- July 202627▲ 237.5%vs July 2025
- Cancelled1.5%
- 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 periods18 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 2 | 42 | ▲ 2,000.0% |
| February | 12 | 32 | ▲ 166.7% |
| March | 3 | 7 | ▲ 133.3% |
| April | 17 | 24 | ▲ 41.2% |
| May | 22 | 31 | ▲ 40.9% |
| June | 11 | 26 | ▲ 136.4% |
| July | 8 | 27 | ▲ 237.5% |
| August | 2 | – | – |
| September | – | – | – |
| October | 30 | – | in progress |
| November | 17 | – | – |
| December | 15 | – | – |
| Year to date (Jan–Jul) | 75 | 189 | ▲ 152.0% |
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 periods18 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 100.0% | 94.7% | ▼ 5.3% |
| February | 75.0% | 90.6% | ▲ 20.8% |
| March | 100.0% | 71.4% | ▼ 28.6% |
| April | 76.5% | 95.8% | ▲ 25.3% |
| May | 63.6% | 96.8% | ▲ 52.1% |
| June | 100.0% | 92.3% | ▼ 7.7% |
| July | 87.5% | 92.6% | ▲ 5.8% |
| August | 0.0% | – | – |
| September | – | – | – |
| October | 80.0% | – | in progress |
| November | 76.5% | – | – |
| December | 28.6% | – | – |
| Year-to-date average (Jan–Jul) | 86.1% | 90.6% | ▲ 5.3% |
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 periods18 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 4 | – |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | – | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 1 | – | – |
| Year to date (Jan–Jul) | 0 | 4 |
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 98.5% 339
- Cancelled 1.5% 5
Share of all recorded flights in the period, all legs. · Oct 15, 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 |
|---|---|---|---|---|
| DJT BWI President Donald J. Trump International Airport – Baltimore/Washington International Thurgood Marshall Airport | 1,425 | -1.8 min | 96.6% | 58 |
| DAL AUS Dallas Love Field – Austin Bergstrom International Airport | 304 | 3.6 min | 94.2% | 55 |
| SFO PHX San Francisco International Airport – Phoenix Sky Harbor International Airport | 1,047 | -0.1 min | 92.0% | 50 |
| MDW MSP Chicago Midway International Airport – Minneapolis–Saint Paul International Airport / Wold–Chamberlain Field | 560 | 25.1 min | 71.4% | 42 |
| SNA OAK John Wayne Orange County International Airport – Oakland San Francisco Bay Airport | 597 | 14.9 min | 55.9% | 35 |
| PHX ATL Phoenix Sky Harbor International Airport – Hartsfield Jackson Atlanta International Airport | 2,549 | 7.2 min | 80.0% | 30 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 6 | 6 | 83.3% | 0 |
| November 2024 | 2 | 2 | 100.0% | 0 |
| December 2024 | 8 | 8 | 75.0% | 0 |
| January 2025 | 2 | 2 | 100.0% | 0 |
| February 2025 | 12 | 12 | 75.0% | 0 |
| March 2025 | 3 | 3 | 100.0% | 0 |
| April 2025 | 17 | 17 | 76.5% | 0 |
| May 2025 | 22 | 22 | 63.6% | 0 |
| June 2025 | 11 | 11 | 100.0% | 0 |
| July 2025 | 8 | 8 | 87.5% | 0 |
| August 2025 | 2 | 2 | 0.0% | 0 |
| October 2025 | 30 | 30 | 80.0% | 0 |
| November 2025 | 17 | 17 | 76.5% | 0 |
| December 2025 | 15 | 14 | 28.6% | 1 |
| January 2026 | 42 | 38 | 94.7% | 4 |
| February 2026 | 32 | 32 | 90.6% | 0 |
| March 2026 | 7 | 7 | 71.4% | 0 |
| April 2026 | 24 | 24 | 95.8% | 0 |
| May 2026 | 31 | 31 | 96.8% | 0 |
| June 2026 | 26 | 26 | 92.3% | 0 |
| July 2026 | 27 | 27 | 92.6% | 0 |