WN4631
WN4631 (Southwest Airlines) is a multi-stop service on 12 routes, busiest Fort Myers to Chicago. Of 362 departures recorded from October 2024 to July 2026, 79.5% left on time, according to the US BTS.
- On-time departures79.5%of 362 flights
- Average delay8.4 min
- July 202618
- Cancelled0.3%
- Legs flown under this number12
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods16 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 28 | 4 | ▼ 85.7% |
| February | 26 | 17 | ▼ 34.6% |
| March | 5 | 14 | ▲ 180.0% |
| April | 23 | 16 | ▼ 30.4% |
| May | 31 | 17 | ▼ 45.2% |
| June | 4 | 24 | ▲ 500.0% |
| July | – | 18 | – |
| August | – | – | – |
| September | – | – | – |
| October | 17 | – | in progress |
| November | 30 | – | – |
| December | 19 | – | – |
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 periods16 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 74.1% | 100.0% | ▲ 35.0% |
| February | 80.8% | 76.5% | ▼ 5.3% |
| March | 60.0% | 85.7% | ▲ 42.8% |
| April | 87.0% | 100.0% | ▲ 15.0% |
| May | 54.8% | 100.0% | ▲ 82.3% |
| June | 100.0% | 91.7% | ▼ 8.3% |
| July | – | 94.4% | – |
| August | – | – | – |
| September | – | – | – |
| October | 52.9% | – | in progress |
| November | 83.3% | – | – |
| December | 94.7% | – | – |
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 periods16 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 1 | 0 | ▼ 100.0% |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | – | 0 | – |
| August | – | – | – |
| September | – | – | – |
| 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 99.7% 361
- Cancelled 0.3% 1
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
4| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| RSW MDW Southwest Florida International Airport – Chicago Midway International Airport | 1,782 | 14.3 min | 73.2% | 113 |
| HOU IND William P. Hobby Airport – Indianapolis International Airport | 1,387 | 13.0 min | 70.7% | 58 |
| DAL MCI Dallas Love Field – Kansas City International Airport | 743 | -0.2 min | 95.1% | 41 |
| MDW PHX Chicago Midway International Airport – Phoenix Sky Harbor International Airport | 2,319 | -1.4 min | 96.8% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 14 | 14 | 78.6% | 0 |
| November 2024 | 26 | 26 | 73.1% | 0 |
| December 2024 | 29 | 29 | 65.5% | 0 |
| January 2025 | 28 | 27 | 74.1% | 1 |
| February 2025 | 26 | 26 | 80.8% | 0 |
| March 2025 | 5 | 5 | 60.0% | 0 |
| April 2025 | 23 | 23 | 87.0% | 0 |
| May 2025 | 31 | 31 | 54.8% | 0 |
| June 2025 | 4 | 4 | 100.0% | 0 |
| October 2025 | 17 | 17 | 52.9% | 0 |
| November 2025 | 30 | 30 | 83.3% | 0 |
| December 2025 | 19 | 19 | 94.7% | 0 |
| January 2026 | 4 | 4 | 100.0% | 0 |
| February 2026 | 17 | 17 | 76.5% | 0 |
| March 2026 | 14 | 14 | 85.7% | 0 |
| April 2026 | 16 | 16 | 100.0% | 0 |
| May 2026 | 17 | 17 | 100.0% | 0 |
| June 2026 | 24 | 24 | 91.7% | 0 |
| July 2026 | 18 | 18 | 94.4% | 0 |