WN3576
WN3576 (Southwest Airlines) is a multi-stop service on 28 routes, busiest Denver to Phoenix. Of 654 departures recorded from October 2024 to July 2026, 67.9% left on time, according to the US BTS.
- On-time departures67.9%of 654 flights
- Average delay15.7 min
- July 202614▼ 79.1%vs July 2025
- Cancelled0.9%
- Legs flown under this number28
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 | 18 | 28 | ▲ 55.6% |
| February | 21 | 28 | ▲ 33.3% |
| March | 6 | 31 | ▲ 416.7% |
| April | 42 | 30 | ▼ 28.6% |
| May | 58 | 31 | ▼ 46.6% |
| June | 68 | 15 | ▼ 77.9% |
| July | 67 | 14 | ▼ 79.1% |
| August | 11 | – | – |
| September | – | – | – |
| October | 88 | – | in progress |
| November | 24 | – | – |
| December | 20 | – | – |
| Year to date (Jan–Jul) | 280 | 177 | ▼ 36.8% |
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 periods18 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 94.4% | 32.1% | ▼ 66.0% |
| February | 81.0% | 28.6% | ▼ 64.7% |
| March | 100.0% | 74.2% | ▼ 25.8% |
| April | 57.1% | 50.0% | ▼ 12.5% |
| May | 61.4% | 51.6% | ▼ 15.9% |
| June | 71.2% | 21.4% | ▼ 69.9% |
| July | 77.6% | 28.6% | ▼ 63.2% |
| August | 27.3% | – | – |
| September | – | – | – |
| October | 88.4% | – | in progress |
| November | 75.0% | – | – |
| December | 80.0% | – | – |
| Year-to-date average (Jan–Jul) | 77.5% | 40.9% | ▼ 47.2% |
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 | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 1 | 0 | ▼ 100.0% |
| June | 2 | 1 | ▼ 50.0% |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | – | – | – |
| October | 2 | – | 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 99.1% 648
- Cancelled 0.9% 6
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
10Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 18 | 18 | 88.9% | 0 |
| November 2024 | 20 | 20 | 100.0% | 0 |
| December 2024 | 16 | 16 | 93.8% | 0 |
| January 2025 | 18 | 18 | 94.4% | 0 |
| February 2025 | 21 | 21 | 81.0% | 0 |
| March 2025 | 6 | 6 | 100.0% | 0 |
| April 2025 | 42 | 42 | 57.1% | 0 |
| May 2025 | 58 | 57 | 61.4% | 1 |
| June 2025 | 68 | 66 | 71.2% | 2 |
| July 2025 | 67 | 67 | 77.6% | 0 |
| August 2025 | 11 | 11 | 27.3% | 0 |
| October 2025 | 88 | 86 | 88.4% | 2 |
| November 2025 | 24 | 24 | 75.0% | 0 |
| December 2025 | 20 | 20 | 80.0% | 0 |
| January 2026 | 28 | 28 | 32.1% | 0 |
| February 2026 | 28 | 28 | 28.6% | 0 |
| March 2026 | 31 | 31 | 74.2% | 0 |
| April 2026 | 30 | 30 | 50.0% | 0 |
| May 2026 | 31 | 31 | 51.6% | 0 |
| June 2026 | 15 | 14 | 21.4% | 1 |
| July 2026 | 14 | 14 | 28.6% | 0 |