WN143
WN143 (Southwest Airlines) is a multi-stop service on 40 routes, busiest Tulsa to Houston. Of 704 departures recorded from October 2024 to July 2026, 85.2% left on time, according to the US BTS.
- On-time departures85.2%of 704 flights
- Average delay6.5 min
- July 202639▲ 25.8%vs July 2025
- Cancelled1.0%
- Legs flown under this number40
Recorded departures by month
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 | 31 | 33 | ▲ 6.5% |
| February | 36 | 28 | ▼ 22.2% |
| March | 32 | 18 | ▼ 43.8% |
| April | 30 | 30 | 0.0% |
| May | 31 | 36 | ▲ 16.1% |
| June | 30 | 38 | ▲ 26.7% |
| July | 31 | 39 | ▲ 25.8% |
| August | 28 | – | – |
| September | 26 | – | – |
| October | 27 | – | in progress |
| November | 43 | – | – |
| December | 54 | – | – |
| Year to date (Jan–Jul) | 221 | 222 | ▲ 0.5% |
according to the US BTS · October 2024 → July 2026
On-time departures by month
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 | 96.6% | 84.4% | ▼ 12.6% |
| February | 94.4% | 100.0% | ▲ 5.9% |
| March | 93.8% | 83.3% | ▼ 11.1% |
| April | 65.5% | 93.3% | ▲ 42.4% |
| May | 64.5% | 91.7% | ▲ 42.1% |
| June | 86.7% | 68.4% | ▼ 21.1% |
| July | 96.7% | 59.0% | ▼ 39.0% |
| August | 92.9% | – | – |
| September | 92.3% | – | – |
| October | 85.2% | – | in progress |
| November | 87.8% | – | – |
| December | 87.0% | – | – |
| Year-to-date average (Jan–Jul) | 85.4% | 82.9% | ▼ 3.0% |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
The most recent periods19 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 2 | 1 | ▼ 50.0% |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 1 | 0 | ▼ 100.0% |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 1 | 0 | ▼ 100.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 2 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 4 | 1 | ▼ 75.0% |
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% 697
- Cancelled 1.0% 7
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
7| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| TUL HOU Tulsa International Airport – William P. Hobby Airport | 731 | 1.5 min | 96.0% | 101 |
| OAK LAS Oakland San Francisco Bay Airport – Harry Reid International Airport | 654 | 10.0 min | 89.5% | 59 |
| AUS DAL Austin Bergstrom International Airport – Dallas Love Field | 304 | 0.4 min | 94.8% | 58 |
| PHX BUR Phoenix Sky Harbor International Airport – Hollywood Burbank/Bob Hope Airport | 593 | 1.4 min | 92.2% | 51 |
| SJC BUR Mineta San Jose International Airport – Hollywood Burbank/Bob Hope Airport | 477 | -3.5 min | 97.6% | 43 |
| MCO AUS Orlando International Airport – Austin Bergstrom International Airport | 1,596 | 20.3 min | 66.7% | 42 |
| BNA ORD Nashville International Airport – Chicago O'Hare International Airport | 660 | 9.2 min | 84.4% | 33 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 80.0% | 0 |
| November 2024 | 30 | 30 | 93.3% | 0 |
| December 2024 | 33 | 33 | 84.9% | 0 |
| January 2025 | 31 | 29 | 96.6% | 2 |
| February 2025 | 36 | 36 | 94.4% | 0 |
| March 2025 | 32 | 32 | 93.8% | 0 |
| April 2025 | 30 | 29 | 65.5% | 1 |
| May 2025 | 31 | 31 | 64.5% | 0 |
| June 2025 | 30 | 30 | 86.7% | 0 |
| July 2025 | 31 | 30 | 96.7% | 1 |
| August 2025 | 28 | 28 | 92.9% | 0 |
| September 2025 | 26 | 26 | 92.3% | 0 |
| October 2025 | 27 | 27 | 85.2% | 0 |
| November 2025 | 43 | 41 | 87.8% | 2 |
| December 2025 | 54 | 54 | 87.0% | 0 |
| January 2026 | 33 | 32 | 84.4% | 1 |
| February 2026 | 28 | 28 | 100.0% | 0 |
| March 2026 | 18 | 18 | 83.3% | 0 |
| April 2026 | 30 | 30 | 93.3% | 0 |
| May 2026 | 36 | 36 | 91.7% | 0 |
| June 2026 | 38 | 38 | 68.4% | 0 |
| July 2026 | 39 | 39 | 59.0% | 0 |