WN351
WN351 (Southwest Airlines) is a multi-stop service on 52 routes, busiest Midland to Austin. Of 772 departures recorded from October 2024 to July 2026, 74.1% left on time, according to the US BTS.
- On-time departures74.1%of 772 flights
- Average delay15.1 min
- July 202657▲ 171.4%vs July 2025
- Cancelled0.7%
- Legs flown under this number52
according to the US BTS · Oct 12, 2024 → Jul 31, 2026 domestic flights only
Recorded departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
All legs under this number combined; see the leg table.
The most recent periods19 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 36 | 17 | ▼ 52.8% |
| February | 35 | 19 | ▼ 45.7% |
| March | 28 | 69 | ▲ 146.4% |
| April | 35 | 48 | ▲ 37.1% |
| May | 40 | 38 | ▼ 5.0% |
| June | 25 | 56 | ▲ 124.0% |
| July | 21 | 57 | ▲ 171.4% |
| August | 20 | – | – |
| September | 17 | – | – |
| October | 30 | – | in progress |
| November | 41 | – | – |
| December | 42 | – | – |
| Year to date (Jan–Jul) | 220 | 304 | ▲ 38.2% |
according to the US BTS · October 2024 → July 2026
On-time departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.
The most recent periods19 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 84.9% | 87.5% | ▲ 3.1% |
| February | 82.9% | 89.5% | ▲ 8.0% |
| March | 78.6% | 66.7% | ▼ 15.1% |
| April | 91.4% | 87.5% | ▼ 4.3% |
| May | 70.0% | 63.2% | ▼ 9.8% |
| June | 80.0% | 73.2% | ▼ 8.5% |
| July | 61.9% | 71.9% | ▲ 16.2% |
| August | 70.0% | – | – |
| September | 50.0% | – | – |
| October | 43.3% | – | in progress |
| November | 75.6% | – | – |
| December | 95.2% | – | – |
| Year-to-date average (Jan–Jul) | 78.5% | 77.1% | ▼ 1.9% |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
Partial coverage: domestic flights only · 22 of 22 periods have data
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
The most recent periods19 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 3 | 1 | ▼ 66.7% |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 1 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 3 | 1 | ▼ 66.7% |
according to the US BTS · October 2024 → July 2026
This is not a forecast
This is a historical record of departures already flown, not a forecast for your flight.
This number flies several legs
Several legs: the headline figure averages all of them. See the leg table.
Cancellation share
- Not cancelled 99.4% 767
- Cancelled 0.6% 5
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
88 of 8
| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| MAF AUS Midland International Air and Space Port – Austin Bergstrom International Airport | 474 | -2.6 min | 93.2% | 59 |
| TUL PHX Tulsa International Airport – Phoenix Sky Harbor International Airport | 1,501 | 10.2 min | 78.0% | 50 |
| DEN MCI Denver International Airport – Kansas City International Airport | 855 | 10.6 min | 79.6% | 49 |
| LGA ATL LaGuardia Airport – Hartsfield Jackson Atlanta International Airport | 1,225 | 45.6 min | 71.1% | 45 |
| CLT BWI Charlotte Douglas International Airport – Baltimore/Washington International Thurgood Marshall Airport | 581 | 8.3 min | 88.1% | 42 |
| STL RSW St. Louis Lambert International Airport – Southwest Florida International Airport | 1,578 | 29.3 min | 47.1% | 35 |
| BNA PHL Nashville International Airport – Philadelphia International Airport | 1,084 | 28.6 min | 45.2% | 31 |
| AUS MCO Austin Bergstrom International Airport – Orlando International Airport | 1,596 | 0.6 min | 89.7% | 30 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 34 | 34 | 88.2% | 0 |
| November 2024 | 31 | 31 | 54.8% | 0 |
| December 2024 | 33 | 33 | 54.6% | 0 |
| January 2025 | 36 | 33 | 84.9% | 3 |
| February 2025 | 35 | 35 | 82.9% | 0 |
| March 2025 | 28 | 28 | 78.6% | 0 |
| April 2025 | 35 | 35 | 91.4% | 0 |
| May 2025 | 40 | 40 | 70.0% | 0 |
| June 2025 | 25 | 25 | 80.0% | 0 |
| July 2025 | 21 | 21 | 61.9% | 0 |
| August 2025 | 20 | 20 | 70.0% | 0 |
| September 2025 | 17 | 16 | 50.0% | 1 |
| October 2025 | 30 | 30 | 43.3% | 0 |
| November 2025 | 41 | 41 | 75.6% | 0 |
| December 2025 | 42 | 42 | 95.2% | 0 |
| January 2026 | 17 | 16 | 87.5% | 1 |
| February 2026 | 19 | 19 | 89.5% | 0 |
| March 2026 | 69 | 69 | 66.7% | 0 |
| April 2026 | 48 | 48 | 87.5% | 0 |
| May 2026 | 38 | 38 | 63.2% | 0 |
| June 2026 | 56 | 56 | 73.2% | 0 |
| July 2026 | 57 | 57 | 71.9% | 0 |