WN4125
WN4125 (Southwest Airlines) is a multi-stop service on 33 routes, busiest Baltimore to Cincinnati. Of 457 departures recorded from October 2024 to July 2026, 80.2% left on time, according to the US BTS.
- On-time departures80.2%of 457 flights
- Average delay10.9 min
- July 202627▼ 22.9%vs July 2025
- Cancelled0.7%
- Legs flown under this number33
Recorded departures by month
All legs under this number combined; see the leg table.
The most recent periods19 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 28 | 9 | ▼ 67.9% |
| February | 25 | 10 | ▼ 60.0% |
| March | 4 | 8 | ▲ 100.0% |
| April | 9 | 3 | ▼ 66.7% |
| May | 15 | 1 | ▼ 93.3% |
| June | 31 | 23 | ▼ 25.8% |
| July | 35 | 27 | ▼ 22.9% |
| August | 32 | – | – |
| September | 30 | – | – |
| October | 56 | – | in progress |
| November | 16 | – | – |
| December | 30 | – | – |
| Year to date (Jan–Jul) | 147 | 81 | ▼ 44.9% |
according to the US BTS · October 2024 → July 2026
On-time departures by month
On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.
The most recent periods19 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 88.9% | 88.9% | 0.0% |
| February | 79.2% | 88.9% | ▲ 12.3% |
| March | 75.0% | 87.5% | ▲ 16.7% |
| April | 55.6% | 66.7% | ▲ 20.0% |
| May | 66.7% | 100.0% | ▲ 50.0% |
| June | 83.9% | 95.7% | ▲ 14.0% |
| July | 97.1% | 92.6% | ▼ 4.7% |
| August | 90.6% | – | – |
| September | 93.3% | – | – |
| October | 51.8% | – | in progress |
| November | 56.3% | – | – |
| December | 76.7% | – | – |
| Year-to-date average (Jan–Jul) | 78.0% | 88.6% | ▲ 13.5% |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
The most recent periods19 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 1 | 0 | ▼ 100.0% |
| February | 1 | 1 | 0.0% |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 2 | 1 | ▼ 50.0% |
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 99.3% 454
- Cancelled 0.7% 3
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
4| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| BWI CVG Baltimore/Washington International Thurgood Marshall Airport – Cincinnati Northern Kentucky International Airport | 690 | 5.7 min | 82.7% | 100 |
| PHX SLC Phoenix Sky Harbor International Airport – Salt Lake City International Airport | 818 | 1.9 min | 91.8% | 61 |
| SBA DEN Santa Barbara Municipal Airport – Denver International Airport | 1,471 | 5.1 min | 94.0% | 50 |
| DAL PIT Dallas Love Field – Pittsburgh International Airport | 1,704 | 8.8 min | 88.2% | 34 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 75.0% | 0 |
| November 2024 | 25 | 25 | 80.0% | 0 |
| December 2024 | 20 | 20 | 85.0% | 0 |
| January 2025 | 28 | 27 | 88.9% | 1 |
| February 2025 | 25 | 24 | 79.2% | 1 |
| March 2025 | 4 | 4 | 75.0% | 0 |
| April 2025 | 9 | 9 | 55.6% | 0 |
| May 2025 | 15 | 15 | 66.7% | 0 |
| June 2025 | 31 | 31 | 83.9% | 0 |
| July 2025 | 35 | 35 | 97.1% | 0 |
| August 2025 | 32 | 32 | 90.6% | 0 |
| September 2025 | 30 | 30 | 93.3% | 0 |
| October 2025 | 56 | 56 | 51.8% | 0 |
| November 2025 | 16 | 16 | 56.3% | 0 |
| December 2025 | 30 | 30 | 76.7% | 0 |
| January 2026 | 9 | 9 | 88.9% | 0 |
| February 2026 | 10 | 9 | 88.9% | 1 |
| March 2026 | 8 | 8 | 87.5% | 0 |
| April 2026 | 3 | 3 | 66.7% | 0 |
| May 2026 | 1 | 1 | 100.0% | 0 |
| June 2026 | 23 | 23 | 95.7% | 0 |
| July 2026 | 27 | 27 | 92.6% | 0 |