WN4396
WN4396 (Southwest Airlines) is a multi-stop service on 11 routes, busiest Chicago to Richmond. Of 312 departures recorded from October 2024 to July 2026, 83.2% left on time, according to the US BTS.
- On-time departures83.2%of 312 flights
- Average delay7.8 min
- July 202627
- Cancelled1.0%
- Legs flown under this number11
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 | 25 | 26 | ▲ 4.0% |
| February | 18 | 18 | 0.0% |
| March | 4 | 3 | ▼ 25.0% |
| April | 3 | 32 | ▲ 966.7% |
| May | 4 | 38 | ▲ 850.0% |
| June | 1 | 28 | ▲ 2,700.0% |
| July | – | 27 | – |
| August | 23 | – | – |
| September | 26 | – | – |
| October | 1 | – | in progress |
| November | 4 | – | – |
| December | – | – | – |
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 | 92.0% | 91.7% | ▼ 0.4% |
| February | 83.3% | 88.9% | ▲ 6.7% |
| March | 75.0% | 100.0% | ▲ 33.3% |
| April | 66.7% | 84.4% | ▲ 26.6% |
| May | 50.0% | 97.4% | ▲ 94.7% |
| June | 100.0% | 55.6% | ▼ 44.4% |
| July | – | 70.4% | – |
| August | 95.7% | – | – |
| September | 96.2% | – | – |
| October | 100.0% | – | in progress |
| November | 50.0% | – | – |
| December | – | – | – |
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 | 2 | – |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 1 | – |
| July | – | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | – | – | – |
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% 309
- Cancelled 1.0% 3
Share of all recorded flights in the period, all legs. · Oct 31, 2024 → Jul 31, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
5| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| MDW RIC Chicago Midway International Airport – Richmond International Airport | 1,011 | 12.2 min | 80.5% | 77 |
| SNA PHX John Wayne Orange County International Airport – Phoenix Sky Harbor International Airport | 544 | -1.8 min | 96.5% | 57 |
| STL LGA St. Louis Lambert International Airport – LaGuardia Airport | 1,426 | 0.4 min | 96.0% | 50 |
| DAL ELP Dallas Love Field – El Paso International Airport | 902 | 17.3 min | 59.2% | 50 |
| STL DAL St. Louis Lambert International Airport – Dallas Love Field | 878 | 4.7 min | 89.1% | 48 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 1 | 1 | 100.0% | 0 |
| November 2024 | 12 | 12 | 83.3% | 0 |
| December 2024 | 18 | 18 | 61.1% | 0 |
| January 2025 | 25 | 25 | 92.0% | 0 |
| February 2025 | 18 | 18 | 83.3% | 0 |
| March 2025 | 4 | 4 | 75.0% | 0 |
| April 2025 | 3 | 3 | 66.7% | 0 |
| May 2025 | 4 | 4 | 50.0% | 0 |
| June 2025 | 1 | 1 | 100.0% | 0 |
| August 2025 | 23 | 23 | 95.7% | 0 |
| September 2025 | 26 | 26 | 96.2% | 0 |
| October 2025 | 1 | 1 | 100.0% | 0 |
| November 2025 | 4 | 4 | 50.0% | 0 |
| January 2026 | 26 | 24 | 91.7% | 2 |
| February 2026 | 18 | 18 | 88.9% | 0 |
| March 2026 | 3 | 3 | 100.0% | 0 |
| April 2026 | 32 | 32 | 84.4% | 0 |
| May 2026 | 38 | 38 | 97.4% | 0 |
| June 2026 | 28 | 27 | 55.6% | 1 |
| July 2026 | 27 | 27 | 70.4% | 0 |