WN4133
WN4133 (Southwest Airlines) is a multi-stop service on 28 routes, busiest Richmond to Baltimore. Of 443 departures recorded from October 2024 to July 2026, 74.9% left on time, according to the US BTS.
- On-time departures74.9%of 443 flights
- Average delay11.7 min
- July 202637
- Cancelled0.0%
- Legs flown under this number28
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods17 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 2 | 4 | ▲ 100.0% |
| February | 2 | – | – |
| March | 27 | 28 | ▲ 3.7% |
| April | 13 | 54 | ▲ 315.4% |
| May | 9 | 62 | ▲ 588.9% |
| June | 1 | 37 | ▲ 3,600.0% |
| July | – | 37 | – |
| August | 26 | – | – |
| September | 30 | – | – |
| October | 59 | – | in progress |
| November | 7 | – | – |
| December | 8 | – | – |
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 periods17 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 50.0% | 75.0% | ▲ 50.0% |
| February | 50.0% | – | – |
| March | 96.3% | 67.9% | ▼ 29.5% |
| April | 92.3% | 57.4% | ▼ 37.8% |
| May | 88.9% | 43.6% | ▼ 51.0% |
| June | 0.0% | 89.2% | – |
| July | – | 89.2% | – |
| August | 92.3% | – | – |
| September | 93.3% | – | – |
| October | 79.7% | – | in progress |
| November | 71.4% | – | – |
| December | 62.5% | – | – |
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 periods17 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | 0 | – | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | – | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | 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 100.0% 443
- Cancelled 0.0% 0
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
6| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| RIC BWI Richmond International Airport – Baltimore/Washington International Thurgood Marshall Airport | 194 | 32.6 min | 37.9% | 58 |
| PIT RSW Pittsburgh International Airport – Southwest Florida International Airport | 1,558 | 2.2 min | 93.0% | 57 |
| RNO LAS Reno Tahoe International Airport – Harry Reid International Airport | 556 | 4.0 min | 83.3% | 42 |
| DEN RIC Denver International Airport – Richmond International Airport | 2,379 | 16.0 min | 59.5% | 42 |
| ITO HNL Hilo International Airport – Daniel K. Inouye International Airport | 349 | -3.2 min | 97.0% | 33 |
| DEN LAS Denver International Airport – Harry Reid International Airport | 1,009 | 11.4 min | 87.1% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 13 | 13 | 76.9% | 0 |
| November 2024 | 16 | 16 | 81.3% | 0 |
| December 2024 | 8 | 8 | 75.0% | 0 |
| January 2025 | 2 | 2 | 50.0% | 0 |
| February 2025 | 2 | 2 | 50.0% | 0 |
| March 2025 | 27 | 27 | 96.3% | 0 |
| April 2025 | 13 | 13 | 92.3% | 0 |
| May 2025 | 9 | 9 | 88.9% | 0 |
| June 2025 | 1 | 1 | 0.0% | 0 |
| August 2025 | 26 | 26 | 92.3% | 0 |
| September 2025 | 30 | 30 | 93.3% | 0 |
| October 2025 | 59 | 59 | 79.7% | 0 |
| November 2025 | 7 | 7 | 71.4% | 0 |
| December 2025 | 8 | 8 | 62.5% | 0 |
| January 2026 | 4 | 4 | 75.0% | 0 |
| March 2026 | 28 | 28 | 67.9% | 0 |
| April 2026 | 54 | 54 | 57.4% | 0 |
| May 2026 | 62 | 62 | 43.6% | 0 |
| June 2026 | 37 | 37 | 89.2% | 0 |
| July 2026 | 37 | 37 | 89.2% | 0 |