WN4290
WN4290 (Southwest Airlines) is a multi-stop service on 12 routes, busiest Houston to New Orleans. Of 373 departures recorded from October 2024 to July 2026, 75.1% left on time, according to the US BTS.
- On-time departures75.1%of 373 flights
- Average delay13.0 min
- July 202623▲ 475.0%vs July 2025
- Cancelled1.1%
- 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 periods18 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 31 | 9 | ▼ 71.0% |
| February | 28 | 19 | ▼ 32.1% |
| March | 5 | 2 | ▼ 60.0% |
| April | 28 | 14 | ▼ 50.0% |
| May | 33 | 18 | ▼ 45.5% |
| June | 10 | 20 | ▲ 100.0% |
| July | 4 | 23 | ▲ 475.0% |
| August | 16 | – | – |
| September | 17 | – | – |
| October | 25 | – | in progress |
| November | 1 | – | – |
| December | – | – | – |
| Year to date (Jan–Jul) | 139 | 105 | ▼ 24.5% |
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 periods18 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 96.4% | 62.5% | ▼ 35.2% |
| February | 92.9% | 73.7% | ▼ 20.7% |
| March | 100.0% | 50.0% | ▼ 50.0% |
| April | 71.4% | 71.4% | 0.0% |
| May | 48.5% | 50.0% | ▲ 3.1% |
| June | 90.0% | 55.0% | ▼ 38.9% |
| July | 100.0% | 60.9% | ▼ 39.1% |
| August | 75.0% | – | – |
| September | 58.8% | – | – |
| October | 84.0% | – | in progress |
| November | 100.0% | – | – |
| December | – | – | – |
| Year-to-date average (Jan–Jul) | 85.6% | 60.5% | ▼ 29.3% |
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 periods18 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 | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | – | – | – |
| Year to date (Jan–Jul) | 3 | 1 | ▼ 66.7% |
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 98.9% 369
- Cancelled 1.1% 4
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
6| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| HOU MSY William P. Hobby Airport – Louis Armstrong New Orleans International Airport | 485 | 1.6 min | 91.5% | 109 |
| SMF BUR Sacramento International Airport – Hollywood Burbank/Bob Hope Airport | 577 | 18.5 min | 57.1% | 49 |
| SMF SAN Sacramento International Airport – San Diego International Airport | 773 | 22.6 min | 59.5% | 42 |
| SJC LAS Mineta San Jose International Airport – Harry Reid International Airport | 620 | 36.9 min | 65.6% | 32 |
| SAT DAL San Antonio International Airport – Dallas Love Field | 399 | 23.3 min | 56.3% | 32 |
| PIT LAS Pittsburgh International Airport – Harry Reid International Airport | 3,066 | 16.6 min | 69.0% | 30 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 12 | 12 | 91.7% | 0 |
| November 2024 | 28 | 28 | 89.3% | 0 |
| December 2024 | 30 | 30 | 86.7% | 0 |
| January 2025 | 31 | 28 | 96.4% | 3 |
| February 2025 | 28 | 28 | 92.9% | 0 |
| March 2025 | 5 | 5 | 100.0% | 0 |
| April 2025 | 28 | 28 | 71.4% | 0 |
| May 2025 | 33 | 33 | 48.5% | 0 |
| June 2025 | 10 | 10 | 90.0% | 0 |
| July 2025 | 4 | 4 | 100.0% | 0 |
| August 2025 | 16 | 16 | 75.0% | 0 |
| September 2025 | 17 | 17 | 58.8% | 0 |
| October 2025 | 25 | 25 | 84.0% | 0 |
| November 2025 | 1 | 1 | 100.0% | 0 |
| January 2026 | 9 | 8 | 62.5% | 1 |
| February 2026 | 19 | 19 | 73.7% | 0 |
| March 2026 | 2 | 2 | 50.0% | 0 |
| April 2026 | 14 | 14 | 71.4% | 0 |
| May 2026 | 18 | 18 | 50.0% | 0 |
| June 2026 | 20 | 20 | 55.0% | 0 |
| July 2026 | 23 | 23 | 60.9% | 0 |