WN4790
WN4790 (Southwest Airlines) is a multi-stop service on 13 routes, busiest Denver to Ontario. Of 230 departures recorded from October 2024 to July 2026, 70.9% left on time, according to the US BTS.
- On-time departures70.9%of 230 flights
- Average delay16.6 min
- July 202626▲ 116.7%vs July 2025
- Cancelled0.0%
- Legs flown under this number13
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods15 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 22 | 28 | ▲ 27.3% |
| February | 16 | 25 | ▲ 56.3% |
| March | 8 | 4 | ▼ 50.0% |
| April | 1 | – | – |
| May | – | – | – |
| June | 13 | 19 | ▲ 46.2% |
| July | 12 | 26 | ▲ 116.7% |
| August | 2 | – | – |
| September | – | – | – |
| October | 30 | – | in progress |
| November | 1 | – | – |
| December | 8 | – | – |
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 periods15 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 95.5% | 75.0% | ▼ 21.4% |
| February | 100.0% | 56.0% | ▼ 44.0% |
| March | 100.0% | 100.0% | 0.0% |
| April | 100.0% | – | – |
| May | – | – | – |
| June | 84.6% | 21.1% | ▼ 75.1% |
| July | 91.7% | 42.3% | ▼ 53.8% |
| August | 100.0% | – | – |
| September | – | – | – |
| October | 56.7% | – | in progress |
| November | 100.0% | – | – |
| December | 87.5% | – | – |
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 periods15 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | – | – |
| May | – | – | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | – | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 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 100.0% 230
- Cancelled 0.0% 0
Share of all recorded flights in the period, all legs. · Oct 13, 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 |
|---|---|---|---|---|
| DEN ONT Denver International Airport – Ontario International Airport | 1,316 | 18.1 min | 67.3% | 55 |
| MDW CLE Chicago Midway International Airport – Cleveland Hopkins International Airport | 493 | -3.5 min | 97.8% | 45 |
| DEN BZN Denver International Airport – Bozeman Yellowstone International Airport | 844 | 44.3 min | 31.0% | 42 |
| SJU MCO Luis Munoz Marin International Airport – Orlando International Airport | 1,913 | 20.3 min | 56.7% | 30 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 10 | 10 | 90.0% | 0 |
| November 2024 | 3 | 3 | 100.0% | 0 |
| December 2024 | 2 | 2 | 100.0% | 0 |
| January 2025 | 22 | 22 | 95.5% | 0 |
| February 2025 | 16 | 16 | 100.0% | 0 |
| March 2025 | 8 | 8 | 100.0% | 0 |
| April 2025 | 1 | 1 | 100.0% | 0 |
| June 2025 | 13 | 13 | 84.6% | 0 |
| July 2025 | 12 | 12 | 91.7% | 0 |
| August 2025 | 2 | 2 | 100.0% | 0 |
| October 2025 | 30 | 30 | 56.7% | 0 |
| November 2025 | 1 | 1 | 100.0% | 0 |
| December 2025 | 8 | 8 | 87.5% | 0 |
| January 2026 | 28 | 28 | 75.0% | 0 |
| February 2026 | 25 | 25 | 56.0% | 0 |
| March 2026 | 4 | 4 | 100.0% | 0 |
| June 2026 | 19 | 19 | 21.1% | 0 |
| July 2026 | 26 | 26 | 42.3% | 0 |