WN443
WN443 (Southwest Airlines) is a multi-stop service on 32 routes, busiest Las Vegas to Ontario. Of 661 departures recorded from October 2024 to July 2026, 76.3% left on time, according to the US BTS.
- On-time departures76.3%of 661 flights
- Average delay13.5 min
- July 202639▲ 30.0%vs July 2025
- Cancelled1.1%
- Legs flown under this number32
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 | 35 | 10 | ▼ 71.4% |
| February | 28 | 18 | ▼ 35.7% |
| March | 31 | 29 | ▼ 6.5% |
| April | 30 | 30 | 0.0% |
| May | 31 | 31 | 0.0% |
| June | 30 | 38 | ▲ 26.7% |
| July | 30 | 39 | ▲ 30.0% |
| August | 31 | – | – |
| September | 30 | – | – |
| October | 32 | – | in progress |
| November | 28 | – | – |
| December | 29 | – | – |
| Year to date (Jan–Jul) | 215 | 195 | ▼ 9.3% |
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 | 91.2% | 80.0% | ▼ 12.3% |
| February | 100.0% | 77.8% | ▼ 22.2% |
| March | 90.0% | 79.3% | ▼ 11.9% |
| April | 100.0% | 93.3% | ▼ 6.7% |
| May | 90.3% | 90.3% | 0.0% |
| June | 73.3% | 42.1% | ▼ 42.6% |
| July | 79.3% | 57.9% | ▼ 27.0% |
| August | 64.5% | – | – |
| September | 66.7% | – | – |
| October | 77.4% | – | in progress |
| November | 57.1% | – | – |
| December | 37.0% | – | – |
| Year-to-date average (Jan–Jul) | 89.2% | 74.4% | ▼ 16.6% |
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 | 0 | ▼ 100.0% |
| February | 0 | 0 | – |
| March | 1 | 0 | ▼ 100.0% |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 1 | 1 | 0.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 1 | – | in progress |
| November | 0 | – | – |
| December | 2 | – | – |
| 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 98.9% 654
- Cancelled 1.1% 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
88 of 8
| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| LAS ONT Harry Reid International Airport – Ontario International Airport | 317 | -3.0 min | 98.9% | 91 |
| LGA DEN LaGuardia Airport – Denver International Airport | 2,600 | 39.5 min | 48.3% | 60 |
| SMF SAN Sacramento International Airport – San Diego International Airport | 773 | 2.9 min | 91.4% | 58 |
| SEA DEN Seattle–Tacoma International Airport – Denver International Airport | 1,645 | 2.5 min | 93.1% | 58 |
| BWI PWM Baltimore/Washington International Thurgood Marshall Airport – Portland International Jetport | 727 | 16.8 min | 67.2% | 58 |
| LAX AUS Los Angeles International Airport – Austin Bergstrom International Airport | 1,995 | 12.2 min | 76.0% | 51 |
| LAX SMF Los Angeles International Airport – Sacramento International Airport | 600 | 18.4 min | 76.3% | 38 |
| LAS RNO Harry Reid International Airport – Reno Tahoe International Airport | 556 | -1.9 min | 90.9% | 33 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 100.0% | 0 |
| November 2024 | 40 | 40 | 90.0% | 0 |
| December 2024 | 41 | 41 | 61.0% | 0 |
| January 2025 | 35 | 34 | 91.2% | 1 |
| February 2025 | 28 | 28 | 100.0% | 0 |
| March 2025 | 31 | 30 | 90.0% | 1 |
| April 2025 | 30 | 30 | 100.0% | 0 |
| May 2025 | 31 | 31 | 90.3% | 0 |
| June 2025 | 30 | 30 | 73.3% | 0 |
| July 2025 | 30 | 29 | 79.3% | 1 |
| August 2025 | 31 | 31 | 64.5% | 0 |
| September 2025 | 30 | 30 | 66.7% | 0 |
| October 2025 | 32 | 31 | 77.4% | 1 |
| November 2025 | 28 | 28 | 57.1% | 0 |
| December 2025 | 29 | 27 | 37.0% | 2 |
| January 2026 | 10 | 10 | 80.0% | 0 |
| February 2026 | 18 | 18 | 77.8% | 0 |
| March 2026 | 29 | 29 | 79.3% | 0 |
| April 2026 | 30 | 30 | 93.3% | 0 |
| May 2026 | 31 | 31 | 90.3% | 0 |
| June 2026 | 38 | 38 | 42.1% | 0 |
| July 2026 | 39 | 38 | 57.9% | 1 |