WN156
WN156 (Southwest Airlines) is a multi-stop service on 37 routes, busiest Dallas to Las Vegas. Of 733 departures recorded from October 2024 to July 2026, 79.2% left on time, according to the US BTS.
- On-time departures79.2%of 733 flights
- Average delay13.4 min
- July 202631▲ 0.0%vs July 2025
- Cancelled1.5%
- Legs flown under this number37
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 | 41 | 31 | ▼ 24.4% |
| February | 31 | 28 | ▼ 9.7% |
| March | 43 | 38 | ▼ 11.6% |
| April | 43 | 31 | ▼ 27.9% |
| May | 45 | 31 | ▼ 31.1% |
| June | 31 | 30 | ▼ 3.2% |
| July | 31 | 31 | 0.0% |
| August | 32 | – | – |
| September | 30 | – | – |
| October | 43 | – | in progress |
| November | 30 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 265 | 220 | ▼ 17.0% |
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 | 85.0% | 66.7% | ▼ 21.6% |
| February | 80.7% | 78.6% | ▼ 2.6% |
| March | 93.0% | 76.3% | ▼ 18.0% |
| April | 90.7% | 100.0% | ▲ 10.3% |
| May | 97.8% | 93.6% | ▼ 4.3% |
| June | 83.9% | 58.6% | ▼ 30.1% |
| July | 80.7% | 50.0% | ▼ 38.0% |
| August | 71.9% | – | – |
| September | 76.7% | – | – |
| October | 58.1% | – | in progress |
| November | 74.1% | – | – |
| December | 74.2% | – | – |
| Year-to-date average (Jan–Jul) | 87.4% | 74.8% | ▼ 14.4% |
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 | 1 | 1 | 0.0% |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 1 | – |
| July | 0 | 5 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 3 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 1 | 7 | ▲ 600.0% |
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 98.5% 722
- Cancelled 1.5% 11
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
99 of 9
| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| DAL LAS Dallas Love Field – Harry Reid International Airport | 1,714 | 16.6 min | 81.3% | 92 |
| LGB OAK Long Beach International Airport – Oakland San Francisco Bay Airport | 569 | 7.3 min | 80.3% | 61 |
| BNA MCI Nashville International Airport – Kansas City International Airport | 790 | -0.4 min | 96.6% | 58 |
| BWI SDF Baltimore/Washington International Thurgood Marshall Airport – Louisville Muhammad Ali International Airport | 795 | 37.2 min | 52.9% | 57 |
| BNA ECP Nashville International Airport – Northwest Florida Beaches International Airport | 647 | 11.7 min | 73.9% | 47 |
| ONT LAS Ontario International Airport – Harry Reid International Airport | 317 | 21.8 min | 64.3% | 45 |
| TUS MDW Tucson International Airport – Chicago Midway International Airport | 2,314 | 5.1 min | 97.6% | 42 |
| ABQ DEN Albuquerque International Sunport – Denver International Airport | 563 | 19.8 min | 66.7% | 42 |
| CMH RSW John Glenn Columbus International Airport – Southwest Florida International Airport | 1,501 | 2.5 min | 93.9% | 33 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 70.0% | 0 |
| November 2024 | 30 | 30 | 76.7% | 0 |
| December 2024 | 32 | 32 | 84.4% | 0 |
| January 2025 | 41 | 40 | 85.0% | 1 |
| February 2025 | 31 | 31 | 80.7% | 0 |
| March 2025 | 43 | 43 | 93.0% | 0 |
| April 2025 | 43 | 43 | 90.7% | 0 |
| May 2025 | 45 | 45 | 97.8% | 0 |
| June 2025 | 31 | 31 | 83.9% | 0 |
| July 2025 | 31 | 31 | 80.7% | 0 |
| August 2025 | 32 | 32 | 71.9% | 0 |
| September 2025 | 30 | 30 | 76.7% | 0 |
| October 2025 | 43 | 43 | 58.1% | 0 |
| November 2025 | 30 | 27 | 74.1% | 3 |
| December 2025 | 31 | 31 | 74.2% | 0 |
| January 2026 | 31 | 30 | 66.7% | 1 |
| February 2026 | 28 | 28 | 78.6% | 0 |
| March 2026 | 38 | 38 | 76.3% | 0 |
| April 2026 | 31 | 31 | 100.0% | 0 |
| May 2026 | 31 | 31 | 93.6% | 0 |
| June 2026 | 30 | 29 | 58.6% | 1 |
| July 2026 | 31 | 26 | 50.0% | 5 |