WN1571
WN1571 (Southwest Airlines) is a multi-stop service on 31 routes, busiest Denver to Las Vegas. Of 721 departures recorded from October 2024 to July 2026, 60.0% left on time, according to the US BTS.
- On-time departures60.0%of 721 flights
- Average delay23.2 min
- July 202645▼ 2.2%vs July 2025
- Cancelled1.8%
- Legs flown under this number31
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 | 28 | 31 | ▲ 10.7% |
| February | 28 | 35 | ▲ 25.0% |
| March | 31 | 83 | ▲ 167.7% |
| April | 22 | 42 | ▲ 90.9% |
| May | 21 | 30 | ▲ 42.9% |
| June | 41 | 41 | 0.0% |
| July | 46 | 45 | ▼ 2.2% |
| August | 29 | – | – |
| September | 26 | – | – |
| October | 35 | – | in progress |
| November | 30 | – | – |
| December | 29 | – | – |
| Year to date (Jan–Jul) | 217 | 307 | ▲ 41.5% |
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 | 67.9% | 70.0% | ▲ 3.2% |
| February | 75.0% | 68.6% | ▼ 8.6% |
| March | 77.4% | 38.6% | ▼ 50.2% |
| April | 68.2% | 43.9% | ▼ 35.6% |
| May | 57.1% | 41.4% | ▼ 27.6% |
| June | 56.1% | 15.0% | ▼ 73.3% |
| July | 57.1% | 33.3% | ▼ 41.7% |
| August | 86.2% | – | – |
| September | 96.2% | – | – |
| October | 80.0% | – | in progress |
| November | 79.3% | – | – |
| December | 64.3% | – | – |
| Year-to-date average (Jan–Jul) | 65.5% | 44.4% | ▼ 32.3% |
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 | 1 | – |
| May | 0 | 1 | – |
| June | 0 | 1 | – |
| July | 4 | 0 | ▼ 100.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 1 | – | – |
| December | 1 | – | – |
| Year to date (Jan–Jul) | 4 | 4 | 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 98.2% 708
- Cancelled 1.8% 13
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 | 14 | 11 | 90.9% | 3 |
| November 2024 | 20 | 20 | 90.0% | 0 |
| December 2024 | 14 | 14 | 85.7% | 0 |
| January 2025 | 28 | 28 | 67.9% | 0 |
| February 2025 | 28 | 28 | 75.0% | 0 |
| March 2025 | 31 | 31 | 77.4% | 0 |
| April 2025 | 22 | 22 | 68.2% | 0 |
| May 2025 | 21 | 21 | 57.1% | 0 |
| June 2025 | 41 | 41 | 56.1% | 0 |
| July 2025 | 46 | 42 | 57.1% | 4 |
| August 2025 | 29 | 29 | 86.2% | 0 |
| September 2025 | 26 | 26 | 96.2% | 0 |
| October 2025 | 35 | 35 | 80.0% | 0 |
| November 2025 | 30 | 29 | 79.3% | 1 |
| December 2025 | 29 | 28 | 64.3% | 1 |
| January 2026 | 31 | 30 | 70.0% | 1 |
| February 2026 | 35 | 35 | 68.6% | 0 |
| March 2026 | 83 | 83 | 38.6% | 0 |
| April 2026 | 42 | 41 | 43.9% | 1 |
| May 2026 | 30 | 29 | 41.4% | 1 |
| June 2026 | 41 | 40 | 15.0% | 1 |
| July 2026 | 45 | 45 | 33.3% | 0 |