WN4343
WN4343 (Southwest Airlines) is a multi-stop service on 17 routes, busiest Richmond to Baltimore. Of 224 departures recorded from October 2024 to July 2026, 78.6% left on time, according to the US BTS.
- On-time departures78.6%of 224 flights
- Average delay14.0 min
- July 202618▼ 41.9%vs July 2025
- Cancelled1.8%
- 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 periods15 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 4 | 1 | ▼ 75.0% |
| February | – | 13 | – |
| March | 26 | 21 | ▼ 19.2% |
| April | 7 | 13 | ▲ 85.7% |
| May | 1 | – | – |
| June | 26 | 16 | ▼ 38.5% |
| July | 31 | 18 | ▼ 41.9% |
| August | 4 | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 4 | – | – |
| 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 periods15 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 75.0% | 0.0% | ▼ 100.0% |
| February | – | 76.9% | – |
| March | 84.0% | 60.0% | ▼ 28.6% |
| April | 85.7% | 61.5% | ▼ 28.2% |
| May | 100.0% | – | – |
| June | 92.3% | 50.0% | ▼ 45.8% |
| July | 96.7% | 52.9% | ▼ 45.2% |
| August | 100.0% | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 100.0% | – | – |
| December | 50.0% | – | – |
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 periods15 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | – | 0 | – |
| March | 1 | 1 | 0.0% |
| April | 0 | 0 | – |
| May | 0 | – | – |
| June | 0 | 0 | – |
| July | 1 | 1 | 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 98.2% 220
- Cancelled 1.8% 4
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
3| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| RIC BWI Richmond International Airport – Baltimore/Washington International Thurgood Marshall Airport | 194 | 7.7 min | 95.0% | 61 |
| MDW CLT Chicago Midway International Airport – Charlotte Douglas International Airport | 940 | 26.2 min | 51.5% | 34 |
| TPA STL Tampa International Airport – St. Louis Lambert International Airport | 1,400 | 11.0 min | 84.4% | 33 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 6 | 6 | 100.0% | 0 |
| November 2024 | 9 | 9 | 100.0% | 0 |
| December 2024 | 22 | 22 | 81.8% | 0 |
| January 2025 | 4 | 4 | 75.0% | 0 |
| March 2025 | 26 | 25 | 84.0% | 1 |
| April 2025 | 7 | 7 | 85.7% | 0 |
| May 2025 | 1 | 1 | 100.0% | 0 |
| June 2025 | 26 | 26 | 92.3% | 0 |
| July 2025 | 31 | 30 | 96.7% | 1 |
| August 2025 | 4 | 4 | 100.0% | 0 |
| November 2025 | 4 | 4 | 100.0% | 0 |
| December 2025 | 2 | 2 | 50.0% | 0 |
| January 2026 | 1 | 1 | 0.0% | 0 |
| February 2026 | 13 | 13 | 76.9% | 0 |
| March 2026 | 21 | 20 | 60.0% | 1 |
| April 2026 | 13 | 13 | 61.5% | 0 |
| June 2026 | 16 | 16 | 50.0% | 0 |
| July 2026 | 18 | 17 | 52.9% | 1 |