WN3580
WN3580 (Southwest Airlines) is a multi-stop service on 33 routes, busiest Denver to Las Vegas. Of 376 departures recorded from October 2024 to July 2026, 75.9% left on time, according to the US BTS.
- On-time departures75.9%of 376 flights
- Average delay13.4 min
- July 202621▲ 425.0%vs July 2025
- Cancelled0.5%
- Legs flown under this number33
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 | 26 | 42 | ▲ 61.5% |
| February | 26 | 40 | ▲ 53.8% |
| March | 27 | 8 | ▼ 70.4% |
| April | 6 | 4 | ▼ 33.3% |
| May | 1 | 11 | ▲ 1,000.0% |
| June | 4 | 23 | ▲ 475.0% |
| July | 4 | 21 | ▲ 425.0% |
| August | 9 | – | – |
| September | 8 | – | – |
| October | 5 | – | in progress |
| November | 33 | – | – |
| December | 28 | – | – |
| Year to date (Jan–Jul) | 94 | 149 | ▲ 58.5% |
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 | 69.2% | 87.8% | ▲ 26.8% |
| February | 80.8% | 70.0% | ▼ 13.3% |
| March | 81.5% | 75.0% | ▼ 8.0% |
| April | 50.0% | 75.0% | ▲ 50.0% |
| May | 100.0% | 81.8% | ▼ 18.2% |
| June | 50.0% | 82.6% | ▲ 65.2% |
| July | 50.0% | 71.4% | ▲ 42.9% |
| August | 55.6% | – | – |
| September | 87.5% | – | – |
| October | 80.0% | – | in progress |
| November | 72.7% | – | – |
| December | 75.0% | – | – |
| Year-to-date average (Jan–Jul) | 68.8% | 77.7% | ▲ 12.9% |
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 | 0 | 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) | 0 | 1 |
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 99.5% 374
- Cancelled 0.5% 2
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 29, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
3| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| DEN LAS Denver International Airport – Harry Reid International Airport | 1,009 | 11.6 min | 79.5% | 78 |
| AMA DAL Rick Husband Amarillo International Airport – Dallas Love Field | 520 | 8.6 min | 84.4% | 45 |
| SLC AUS Salt Lake City International Airport – Austin Bergstrom International Airport | 1,747 | 21.6 min | 75.0% | 36 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 10 | 10 | 80.0% | 0 |
| November 2024 | 14 | 14 | 71.4% | 0 |
| December 2024 | 26 | 25 | 80.0% | 1 |
| January 2025 | 26 | 26 | 69.2% | 0 |
| February 2025 | 26 | 26 | 80.8% | 0 |
| March 2025 | 27 | 27 | 81.5% | 0 |
| April 2025 | 6 | 6 | 50.0% | 0 |
| May 2025 | 1 | 1 | 100.0% | 0 |
| June 2025 | 4 | 4 | 50.0% | 0 |
| July 2025 | 4 | 4 | 50.0% | 0 |
| August 2025 | 9 | 9 | 55.6% | 0 |
| September 2025 | 8 | 8 | 87.5% | 0 |
| October 2025 | 5 | 5 | 80.0% | 0 |
| November 2025 | 33 | 33 | 72.7% | 0 |
| December 2025 | 28 | 28 | 75.0% | 0 |
| January 2026 | 42 | 41 | 87.8% | 1 |
| February 2026 | 40 | 40 | 70.0% | 0 |
| March 2026 | 8 | 8 | 75.0% | 0 |
| April 2026 | 4 | 4 | 75.0% | 0 |
| May 2026 | 11 | 11 | 81.8% | 0 |
| June 2026 | 23 | 23 | 82.6% | 0 |
| July 2026 | 21 | 21 | 71.4% | 0 |