WN4671
WN4671 (Southwest Airlines) is a multi-stop service on 17 routes, busiest Pittsburgh to Baltimore. Of 356 departures recorded from October 2024 to July 2026, 82.3% left on time, according to the US BTS.
- On-time departures82.3%of 356 flights
- Average delay9.3 min
- July 202634
- Cancelled1.4%
- Legs flown under this number17
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods13 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | – | 46 | – |
| February | – | 47 | – |
| March | 50 | 23 | ▼ 54.0% |
| April | 30 | 7 | ▼ 76.7% |
| May | 22 | 4 | ▼ 81.8% |
| June | 3 | 30 | ▲ 900.0% |
| July | – | 34 | – |
| August | – | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 24 | – | – |
| December | 22 | – | – |
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 periods13 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | – | 90.9% | – |
| February | – | 91.5% | – |
| March | 81.6% | 69.6% | ▼ 14.8% |
| April | 89.7% | 42.9% | ▼ 52.2% |
| May | 72.7% | 50.0% | ▼ 31.3% |
| June | 100.0% | 93.3% | ▼ 6.7% |
| July | – | 93.9% | – |
| August | – | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 58.3% | – | – |
| December | 68.2% | – | – |
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 periods13 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | – | 2 | – |
| February | – | 0 | – |
| March | 1 | 0 | ▼ 100.0% |
| April | 1 | 0 | ▼ 100.0% |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | – | 1 | – |
| August | – | – | – |
| 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 98.6% 351
- Cancelled 1.4% 5
Share of all recorded flights in the period, all legs. · Oct 14, 2024 → Jul 31, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
3| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| PIT BWI Pittsburgh International Airport – Baltimore/Washington International Thurgood Marshall Airport | 338 | 1.2 min | 92.7% | 56 |
| MDW MEM Chicago Midway International Airport – Frederick W. Smith International Airport | 774 | -0.0 min | 92.3% | 53 |
| MEM DEN Frederick W. Smith International Airport – Denver International Airport | 1,401 | 6.1 min | 92.7% | 42 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 13 | 13 | 84.6% | 0 |
| November 2024 | 1 | 1 | 100.0% | 0 |
| March 2025 | 50 | 49 | 81.6% | 1 |
| April 2025 | 30 | 29 | 89.7% | 1 |
| May 2025 | 22 | 22 | 72.7% | 0 |
| June 2025 | 3 | 3 | 100.0% | 0 |
| November 2025 | 24 | 24 | 58.3% | 0 |
| December 2025 | 22 | 22 | 68.2% | 0 |
| January 2026 | 46 | 44 | 90.9% | 2 |
| February 2026 | 47 | 47 | 91.5% | 0 |
| March 2026 | 23 | 23 | 69.6% | 0 |
| April 2026 | 7 | 7 | 42.9% | 0 |
| May 2026 | 4 | 4 | 50.0% | 0 |
| June 2026 | 30 | 30 | 93.3% | 0 |
| July 2026 | 34 | 33 | 93.9% | 1 |