WN4409
WN4409 (Southwest Airlines) is a multi-stop service on 18 routes, busiest Ontario to Sacramento. Of 458 departures recorded from October 2024 to July 2026, 78.2% left on time, according to the US BTS.
- On-time departures78.2%of 458 flights
- Average delay10.1 min
- July 202631▲ 287.5%vs July 2025
- Cancelled0.7%
- Legs flown under this number18
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 | 26 | 26 | 0.0% |
| February | 16 | 27 | ▲ 68.8% |
| March | 25 | 31 | ▲ 24.0% |
| April | 18 | 27 | ▲ 50.0% |
| May | 20 | 26 | ▲ 30.0% |
| June | 9 | 30 | ▲ 233.3% |
| July | 8 | 31 | ▲ 287.5% |
| August | 2 | – | – |
| September | – | – | – |
| October | 33 | – | in progress |
| November | 18 | – | – |
| December | 15 | – | – |
| Year to date (Jan–Jul) | 122 | 198 | ▲ 62.3% |
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 | 73.1% | 88.5% | ▲ 21.0% |
| February | 100.0% | 96.3% | ▼ 3.7% |
| March | 83.3% | 96.7% | ▲ 16.0% |
| April | 66.7% | 96.3% | ▲ 44.4% |
| May | 40.0% | 96.2% | ▲ 140.4% |
| June | 66.7% | 80.0% | ▲ 20.0% |
| July | 87.5% | 83.9% | ▼ 4.1% |
| August | 50.0% | – | – |
| September | – | – | – |
| October | 40.6% | – | in progress |
| November | 66.7% | – | – |
| December | 86.7% | – | – |
| Year-to-date average (Jan–Jul) | 73.9% | 91.1% | ▲ 23.3% |
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 | 0 | 0 | – |
| February | 0 | 0 | – |
| March | 1 | 1 | 0.0% |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | – | – | – |
| October | 1 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 1 | 1 | 0.0% |
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 99.3% 455
- Cancelled 0.7% 3
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
8| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| ONT SMF Ontario International Airport – Sacramento International Airport | 627 | 6.4 min | 84.9% | 66 |
| MDW FLL Chicago Midway International Airport – Fort Lauderdale Hollywood International Airport | 1,881 | 9.4 min | 80.4% | 56 |
| AUS MDW Austin Bergstrom International Airport – Chicago Midway International Airport | 1,565 | 4.1 min | 96.2% | 53 |
| SNA SMF John Wayne Orange County International Airport – Sacramento International Airport | 650 | -2.1 min | 96.0% | 50 |
| SNA SJC John Wayne Orange County International Airport – Mineta San Jose International Airport | 550 | 4.0 min | 74.3% | 35 |
| SAV BWI Savannah Hilton Head International Airport – Baltimore/Washington International Thurgood Marshall Airport | 884 | -2.5 min | 96.9% | 33 |
| MCO HOU Orlando International Airport – William P. Hobby Airport | 1,364 | 36.4 min | 54.6% | 33 |
| STL BOS St. Louis Lambert International Airport – Boston Logan International Airport | 1,680 | 27.3 min | 37.9% | 30 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 23 | 23 | 60.9% | 0 |
| November 2024 | 19 | 19 | 79.0% | 0 |
| December 2024 | 28 | 28 | 75.0% | 0 |
| January 2025 | 26 | 26 | 73.1% | 0 |
| February 2025 | 16 | 16 | 100.0% | 0 |
| March 2025 | 25 | 24 | 83.3% | 1 |
| April 2025 | 18 | 18 | 66.7% | 0 |
| May 2025 | 20 | 20 | 40.0% | 0 |
| June 2025 | 9 | 9 | 66.7% | 0 |
| July 2025 | 8 | 8 | 87.5% | 0 |
| August 2025 | 2 | 2 | 50.0% | 0 |
| October 2025 | 33 | 32 | 40.6% | 1 |
| November 2025 | 18 | 18 | 66.7% | 0 |
| December 2025 | 15 | 15 | 86.7% | 0 |
| January 2026 | 26 | 26 | 88.5% | 0 |
| February 2026 | 27 | 27 | 96.3% | 0 |
| March 2026 | 31 | 30 | 96.7% | 1 |
| April 2026 | 27 | 27 | 96.3% | 0 |
| May 2026 | 26 | 26 | 96.2% | 0 |
| June 2026 | 30 | 30 | 80.0% | 0 |
| July 2026 | 31 | 31 | 83.9% | 0 |