WN4226
WN4226 (Southwest Airlines) is a multi-stop service on 26 routes, busiest Baltimore to Pittsburgh. Of 384 departures recorded from October 2024 to July 2026, 81.6% left on time, according to the US BTS.
- On-time departures81.6%of 384 flights
- Average delay8.3 min
- July 202617▲ 112.5%vs July 2025
- Cancelled0.8%
- Legs flown under this number26
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 | 43 | 4 | ▼ 90.7% |
| February | 54 | 8 | ▼ 85.2% |
| March | 36 | 27 | ▼ 25.0% |
| April | 7 | 27 | ▲ 285.7% |
| May | – | 25 | – |
| June | 8 | 19 | ▲ 137.5% |
| July | 8 | 17 | ▲ 112.5% |
| August | 2 | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 6 | – | – |
| December | 2 | – | – |
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 | 85.4% | 100.0% | ▲ 17.1% |
| February | 81.5% | 87.5% | ▲ 7.4% |
| March | 82.9% | 70.4% | ▼ 15.1% |
| April | 57.1% | 88.9% | ▲ 55.6% |
| May | – | 76.0% | – |
| June | 87.5% | 36.8% | ▼ 57.9% |
| July | 62.5% | 64.7% | ▲ 3.5% |
| August | 100.0% | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 83.3% | – | – |
| December | 100.0% | – | – |
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 periods16 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 2 | 0 | ▼ 100.0% |
| February | 0 | 0 | – |
| March | 1 | 0 | ▼ 100.0% |
| April | 0 | 0 | – |
| May | – | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | – | – | – |
| October | – | – | 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 99.2% 381
- Cancelled 0.8% 3
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 PIT Baltimore/Washington International Thurgood Marshall Airport – Pittsburgh International Airport | 338 | 1.5 min | 93.1% | 104 |
| SMF ONT Sacramento International Airport – Ontario International Airport | 627 | 4.8 min | 90.5% | 42 |
| OAK LAS Oakland San Francisco Bay Airport – Harry Reid International Airport | 654 | 7.7 min | 81.8% | 33 |
| PHX MCO Phoenix Sky Harbor International Airport – Orlando International Airport | 2,969 | 12.4 min | 75.0% | 32 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 11 | 11 | 100.0% | 0 |
| November 2024 | 36 | 36 | 97.2% | 0 |
| December 2024 | 44 | 44 | 93.2% | 0 |
| January 2025 | 43 | 41 | 85.4% | 2 |
| February 2025 | 54 | 54 | 81.5% | 0 |
| March 2025 | 36 | 35 | 82.9% | 1 |
| April 2025 | 7 | 7 | 57.1% | 0 |
| June 2025 | 8 | 8 | 87.5% | 0 |
| July 2025 | 8 | 8 | 62.5% | 0 |
| August 2025 | 2 | 2 | 100.0% | 0 |
| November 2025 | 6 | 6 | 83.3% | 0 |
| December 2025 | 2 | 2 | 100.0% | 0 |
| January 2026 | 4 | 4 | 100.0% | 0 |
| February 2026 | 8 | 8 | 87.5% | 0 |
| March 2026 | 27 | 27 | 70.4% | 0 |
| April 2026 | 27 | 27 | 88.9% | 0 |
| May 2026 | 25 | 25 | 76.0% | 0 |
| June 2026 | 19 | 19 | 36.8% | 0 |
| July 2026 | 17 | 17 | 64.7% | 0 |