WN3153
WN3153 (Southwest Airlines) is a multi-stop service on 20 routes, busiest Ontario to Chicago. Of 411 departures recorded from October 2024 to July 2026, 70.6% left on time, according to the US BTS.
- On-time departures70.6%of 411 flights
- Average delay13.3 min
- July 202631▲ 72.2%vs July 2025
- Cancelled0.7%
- Legs flown under this number20
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 | 8 | 30 | ▲ 275.0% |
| February | 22 | 18 | ▼ 18.2% |
| March | 4 | 26 | ▲ 550.0% |
| April | 3 | 29 | ▲ 866.7% |
| May | 4 | 31 | ▲ 675.0% |
| June | 15 | 30 | ▲ 100.0% |
| July | 18 | 31 | ▲ 72.2% |
| August | 36 | – | – |
| September | 39 | – | – |
| October | 2 | – | in progress |
| November | 7 | – | – |
| December | 13 | – | – |
| Year to date (Jan–Jul) | 74 | 195 | ▲ 163.5% |
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 | 87.5% | 70.0% | ▼ 20.0% |
| February | 66.7% | 50.0% | ▼ 25.0% |
| March | 25.0% | 96.0% | ▲ 284.0% |
| April | 33.3% | 96.6% | ▲ 189.7% |
| May | 0.0% | 90.3% | – |
| June | 53.3% | 70.0% | ▲ 31.3% |
| July | 55.6% | 77.4% | ▲ 39.3% |
| August | 60.0% | – | – |
| September | 71.8% | – | – |
| October | 100.0% | – | in progress |
| November | 71.4% | – | – |
| December | 61.5% | – | – |
| Year-to-date average (Jan–Jul) | 45.9% | 78.6% | ▲ 71.2% |
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 | 0 | 0 | – |
| February | 1 | 0 | ▼ 100.0% |
| March | 0 | 1 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 1 | – | – |
| September | 0 | – | – |
| October | 0 | – | 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% 408
- 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
4| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| ONT MDW Ontario International Airport – Chicago Midway International Airport | 2,740 | 10.2 min | 74.1% | 58 |
| MDW CLT Chicago Midway International Airport – Charlotte Douglas International Airport | 940 | 15.9 min | 67.9% | 57 |
| STL LAS St. Louis Lambert International Airport – Harry Reid International Airport | 2,202 | 2.7 min | 92.2% | 51 |
| MSP DEN Minneapolis–Saint Paul International Airport / Wold–Chamberlain Field – Denver International Airport | 1,092 | 14.0 min | 68.1% | 47 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 19 | 19 | 84.2% | 0 |
| November 2024 | 8 | 8 | 100.0% | 0 |
| December 2024 | 18 | 18 | 22.2% | 0 |
| January 2025 | 8 | 8 | 87.5% | 0 |
| February 2025 | 22 | 21 | 66.7% | 1 |
| March 2025 | 4 | 4 | 25.0% | 0 |
| April 2025 | 3 | 3 | 33.3% | 0 |
| May 2025 | 4 | 4 | 0.0% | 0 |
| June 2025 | 15 | 15 | 53.3% | 0 |
| July 2025 | 18 | 18 | 55.6% | 0 |
| August 2025 | 36 | 35 | 60.0% | 1 |
| September 2025 | 39 | 39 | 71.8% | 0 |
| October 2025 | 2 | 2 | 100.0% | 0 |
| November 2025 | 7 | 7 | 71.4% | 0 |
| December 2025 | 13 | 13 | 61.5% | 0 |
| January 2026 | 30 | 30 | 70.0% | 0 |
| February 2026 | 18 | 18 | 50.0% | 0 |
| March 2026 | 26 | 25 | 96.0% | 1 |
| April 2026 | 29 | 29 | 96.6% | 0 |
| May 2026 | 31 | 31 | 90.3% | 0 |
| June 2026 | 30 | 30 | 70.0% | 0 |
| July 2026 | 31 | 31 | 77.4% | 0 |