WN479
WN479 (Southwest Airlines) is a multi-stop service on 32 routes, busiest Ontario to Denver. Of 746 departures recorded from October 2024 to July 2026, 82.6% left on time, according to the US BTS.
- On-time departures82.6%of 746 flights
- Average delay9.5 min
- July 202631▲ 0.0%vs July 2025
- Cancelled0.7%
- Legs flown under this number32
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 | 50 | 32 | ▼ 36.0% |
| February | 37 | 28 | ▼ 24.3% |
| March | 28 | 23 | ▼ 17.9% |
| April | 32 | 43 | ▲ 34.4% |
| May | 33 | 49 | ▲ 48.5% |
| June | 31 | 33 | ▲ 6.5% |
| July | 31 | 31 | 0.0% |
| August | 31 | – | – |
| September | 30 | – | – |
| October | 45 | – | in progress |
| November | 42 | – | – |
| December | 35 | – | – |
| Year to date (Jan–Jul) | 242 | 239 | ▼ 1.2% |
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% | 77.4% | ▼ 14.0% |
| February | 94.6% | 85.7% | ▼ 9.4% |
| March | 88.0% | 82.6% | ▼ 6.1% |
| April | 87.5% | 67.4% | ▼ 22.9% |
| May | 84.9% | 81.6% | ▼ 3.8% |
| June | 83.9% | 78.8% | ▼ 6.1% |
| July | 71.0% | 80.7% | ▲ 13.6% |
| August | 93.6% | – | – |
| September | 96.7% | – | – |
| October | 82.2% | – | in progress |
| November | 66.7% | – | – |
| December | 51.4% | – | – |
| Year-to-date average (Jan–Jul) | 85.7% | 79.2% | ▼ 7.6% |
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 | 1 | – |
| February | 0 | 0 | – |
| March | 3 | 0 | ▼ 100.0% |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| 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 99.3% 741
- Cancelled 0.7% 5
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
10Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 11 | 10 | 70.0% | 1 |
| November 2024 | 32 | 32 | 100.0% | 0 |
| December 2024 | 39 | 39 | 100.0% | 0 |
| January 2025 | 50 | 50 | 90.0% | 0 |
| February 2025 | 37 | 37 | 94.6% | 0 |
| March 2025 | 28 | 25 | 88.0% | 3 |
| April 2025 | 32 | 32 | 87.5% | 0 |
| May 2025 | 33 | 33 | 84.9% | 0 |
| June 2025 | 31 | 31 | 83.9% | 0 |
| July 2025 | 31 | 31 | 71.0% | 0 |
| August 2025 | 31 | 31 | 93.6% | 0 |
| September 2025 | 30 | 30 | 96.7% | 0 |
| October 2025 | 45 | 45 | 82.2% | 0 |
| November 2025 | 42 | 42 | 66.7% | 0 |
| December 2025 | 35 | 35 | 51.4% | 0 |
| January 2026 | 32 | 31 | 77.4% | 1 |
| February 2026 | 28 | 28 | 85.7% | 0 |
| March 2026 | 23 | 23 | 82.6% | 0 |
| April 2026 | 43 | 43 | 67.4% | 0 |
| May 2026 | 49 | 49 | 81.6% | 0 |
| June 2026 | 33 | 33 | 78.8% | 0 |
| July 2026 | 31 | 31 | 80.7% | 0 |