WN4710
WN4710 (Southwest Airlines) is a multi-stop service on 13 routes, busiest Baltimore to Chicago. Of 307 departures recorded from October 2024 to July 2026, 65.8% left on time, according to the US BTS.
- On-time departures65.8%of 307 flights
- Average delay15.6 min
- July 202616▼ 46.7%vs July 2025
- Cancelled1.0%
- Legs flown under this number13
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods18 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 26 | 27 | ▲ 3.8% |
| February | 24 | 28 | ▲ 16.7% |
| March | 4 | 4 | 0.0% |
| April | 3 | 11 | ▲ 266.7% |
| May | 3 | 12 | ▲ 300.0% |
| June | 27 | 17 | ▼ 37.0% |
| July | 30 | 16 | ▼ 46.7% |
| August | 4 | – | – |
| September | – | – | – |
| October | 4 | – | in progress |
| November | 2 | – | – |
| December | 2 | – | – |
| Year to date (Jan–Jul) | 117 | 115 | ▼ 1.7% |
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 periods18 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 62.5% | 74.1% | ▲ 18.5% |
| February | 75.0% | 67.9% | ▼ 9.5% |
| March | 25.0% | 50.0% | ▲ 100.0% |
| April | 100.0% | 90.9% | ▼ 9.1% |
| May | 0.0% | 50.0% | – |
| June | 74.1% | 47.1% | ▼ 36.5% |
| July | 70.0% | 50.0% | ▼ 28.6% |
| August | 100.0% | – | – |
| September | – | – | – |
| October | 75.0% | – | in progress |
| November | 50.0% | – | – |
| December | 100.0% | – | – |
| Year-to-date average (Jan–Jul) | 58.1% | 61.4% | ▲ 5.7% |
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 periods18 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 2 | 0 | ▼ 100.0% |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | – | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 2 | 0 | ▼ 100.0% |
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 99.0% 304
- Cancelled 1.0% 3
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 29, 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 |
|---|---|---|---|---|
| BWI MDW Baltimore/Washington International Thurgood Marshall Airport – Chicago Midway International Airport | 981 | 13.5 min | 63.8% | 96 |
| DEN RNO Denver International Airport – Reno Tahoe International Airport | 1,291 | 11.7 min | 69.0% | 58 |
| STL HOU St. Louis Lambert International Airport – William P. Hobby Airport | 1,108 | 20.7 min | 69.1% | 42 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 19 | 19 | 63.2% | 0 |
| November 2024 | 24 | 23 | 73.9% | 1 |
| December 2024 | 20 | 20 | 50.0% | 0 |
| January 2025 | 26 | 24 | 62.5% | 2 |
| February 2025 | 24 | 24 | 75.0% | 0 |
| March 2025 | 4 | 4 | 25.0% | 0 |
| April 2025 | 3 | 3 | 100.0% | 0 |
| May 2025 | 3 | 3 | 0.0% | 0 |
| June 2025 | 27 | 27 | 74.1% | 0 |
| July 2025 | 30 | 30 | 70.0% | 0 |
| August 2025 | 4 | 4 | 100.0% | 0 |
| October 2025 | 4 | 4 | 75.0% | 0 |
| November 2025 | 2 | 2 | 50.0% | 0 |
| December 2025 | 2 | 2 | 100.0% | 0 |
| January 2026 | 27 | 27 | 74.1% | 0 |
| February 2026 | 28 | 28 | 67.9% | 0 |
| March 2026 | 4 | 4 | 50.0% | 0 |
| April 2026 | 11 | 11 | 90.9% | 0 |
| May 2026 | 12 | 12 | 50.0% | 0 |
| June 2026 | 17 | 17 | 47.1% | 0 |
| July 2026 | 16 | 16 | 50.0% | 0 |