WN1579
WN1579 (Southwest Airlines) is a multi-stop service on 24 routes, busiest Sacramento to Houston. Of 618 departures recorded from October 2024 to July 2026, 69.5% left on time, according to the US BTS.
- On-time departures69.5%of 618 flights
- Average delay15.4 min
- July 20268▼ 77.1%vs July 2025
- Cancelled1.3%
- Legs flown under this number24
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 | 31 | 0.0% |
| February | 28 | 28 | 0.0% |
| March | 25 | 34 | ▲ 36.0% |
| April | 28 | 40 | ▲ 42.9% |
| May | 31 | 44 | ▲ 41.9% |
| June | 34 | 12 | ▼ 64.7% |
| July | 35 | 8 | ▼ 77.1% |
| August | 18 | – | – |
| September | 17 | – | – |
| October | 21 | – | in progress |
| November | 38 | – | – |
| December | 33 | – | – |
| Year to date (Jan–Jul) | 212 | 197 | ▼ 7.1% |
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 | 90.0% | 48.4% | ▼ 46.2% |
| February | 75.0% | 57.1% | ▼ 23.8% |
| March | 84.0% | 63.6% | ▼ 24.2% |
| April | 82.1% | 50.0% | ▼ 39.1% |
| May | 50.0% | 23.3% | ▼ 53.5% |
| June | 76.5% | 54.6% | ▼ 28.7% |
| July | 68.6% | 33.3% | ▼ 51.4% |
| August | 83.3% | – | – |
| September | 100.0% | – | – |
| October | 66.7% | – | in progress |
| November | 89.5% | – | – |
| December | 78.1% | – | – |
| Year-to-date average (Jan–Jul) | 75.2% | 47.2% | ▼ 37.2% |
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 | 1 | 0 | ▼ 100.0% |
| February | 0 | 0 | – |
| March | 0 | 1 | – |
| April | 0 | 0 | – |
| May | 1 | 1 | 0.0% |
| June | 0 | 1 | – |
| July | 0 | 2 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 1 | – | – |
| Year to date (Jan–Jul) | 2 | 5 | ▲ 150.0% |
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 98.7% 610
- Cancelled 1.3% 8
Share of all recorded flights in the period, all legs. · Oct 13, 2024 → Jul 26, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
8| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| SMF HOU Sacramento International Airport – William P. Hobby Airport | 2,610 | 4.0 min | 94.2% | 87 |
| MCO SJU Orlando International Airport – Luis Munoz Marin International Airport | 1,913 | 21.1 min | 55.2% | 58 |
| MCO MCI Orlando International Airport – Kansas City International Airport | 1,726 | 12.5 min | 66.7% | 58 |
| MCI DCA Kansas City International Airport – Ronald Reagan Washington National Airport | 1,524 | 42.1 min | 28.6% | 50 |
| TUS LAS Tucson International Airport – Harry Reid International Airport | 587 | 1.7 min | 88.9% | 45 |
| DEN SAN Denver International Airport – San Diego International Airport | 1,371 | 20.3 min | 72.1% | 43 |
| LAS MCI Harry Reid International Airport – Kansas City International Airport | 1,829 | 40.4 min | 43.8% | 32 |
| RNO LAS Reno Tahoe International Airport – Harry Reid International Airport | 556 | -3.7 min | 100.0% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 23 | 23 | 78.3% | 0 |
| November 2024 | 28 | 28 | 96.4% | 0 |
| December 2024 | 31 | 31 | 87.1% | 0 |
| January 2025 | 31 | 30 | 90.0% | 1 |
| February 2025 | 28 | 28 | 75.0% | 0 |
| March 2025 | 25 | 25 | 84.0% | 0 |
| April 2025 | 28 | 28 | 82.1% | 0 |
| May 2025 | 31 | 30 | 50.0% | 1 |
| June 2025 | 34 | 34 | 76.5% | 0 |
| July 2025 | 35 | 35 | 68.6% | 0 |
| August 2025 | 18 | 18 | 83.3% | 0 |
| September 2025 | 17 | 17 | 100.0% | 0 |
| October 2025 | 21 | 21 | 66.7% | 0 |
| November 2025 | 38 | 38 | 89.5% | 0 |
| December 2025 | 33 | 32 | 78.1% | 1 |
| January 2026 | 31 | 31 | 48.4% | 0 |
| February 2026 | 28 | 28 | 57.1% | 0 |
| March 2026 | 34 | 33 | 63.6% | 1 |
| April 2026 | 40 | 40 | 50.0% | 0 |
| May 2026 | 44 | 43 | 23.3% | 1 |
| June 2026 | 12 | 11 | 54.6% | 1 |
| July 2026 | 8 | 6 | 33.3% | 2 |