WN1671
WN1671 (Southwest Airlines) is a multi-stop service on 28 routes, busiest Denver to Las Vegas. Of 729 departures recorded from October 2024 to July 2026, 67.5% left on time, according to the US BTS.
- On-time departures67.5%of 729 flights
- Average delay18.8 min
- July 202628▼ 34.9%vs July 2025
- Cancelled1.4%
- Legs flown under this number28
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 | 29 | ▲ 3.6% |
| February | 18 | 25 | ▲ 38.9% |
| March | 30 | 31 | ▲ 3.3% |
| April | 33 | 27 | ▼ 18.2% |
| May | 34 | 27 | ▼ 20.6% |
| June | 43 | 26 | ▼ 39.5% |
| July | 43 | 28 | ▼ 34.9% |
| August | 36 | – | – |
| September | 34 | – | – |
| October | 79 | – | in progress |
| November | 30 | – | – |
| December | 28 | – | – |
| Year to date (Jan–Jul) | 229 | 193 | ▼ 15.7% |
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 | 92.3% | 96.3% | ▲ 4.3% |
| February | 72.2% | 72.0% | ▼ 0.3% |
| March | 80.0% | 41.4% | ▼ 48.3% |
| April | 78.8% | 74.1% | ▼ 6.0% |
| May | 76.5% | 48.2% | ▼ 37.0% |
| June | 39.5% | 11.5% | ▼ 70.8% |
| July | 35.0% | 32.1% | ▼ 8.2% |
| August | 72.2% | – | – |
| September | 78.8% | – | – |
| October | 65.8% | – | in progress |
| November | 76.7% | – | – |
| December | 82.1% | – | – |
| Year-to-date average (Jan–Jul) | 67.8% | 53.7% | ▼ 20.8% |
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 | 2 | 2 | 0.0% |
| February | 0 | 0 | – |
| March | 0 | 2 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 3 | 0 | ▼ 100.0% |
| August | 0 | – | – |
| September | 1 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 5 | 4 | ▼ 20.0% |
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 98.6% 719
- Cancelled 1.4% 10
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
12Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 42 | 42 | 95.2% | 0 |
| November 2024 | 29 | 29 | 86.2% | 0 |
| December 2024 | 29 | 29 | 86.2% | 0 |
| January 2025 | 28 | 26 | 92.3% | 2 |
| February 2025 | 18 | 18 | 72.2% | 0 |
| March 2025 | 30 | 30 | 80.0% | 0 |
| April 2025 | 33 | 33 | 78.8% | 0 |
| May 2025 | 34 | 34 | 76.5% | 0 |
| June 2025 | 43 | 43 | 39.5% | 0 |
| July 2025 | 43 | 40 | 35.0% | 3 |
| August 2025 | 36 | 36 | 72.2% | 0 |
| September 2025 | 34 | 33 | 78.8% | 1 |
| October 2025 | 79 | 79 | 65.8% | 0 |
| November 2025 | 30 | 30 | 76.7% | 0 |
| December 2025 | 28 | 28 | 82.1% | 0 |
| January 2026 | 29 | 27 | 96.3% | 2 |
| February 2026 | 25 | 25 | 72.0% | 0 |
| March 2026 | 31 | 29 | 41.4% | 2 |
| April 2026 | 27 | 27 | 74.1% | 0 |
| May 2026 | 27 | 27 | 48.2% | 0 |
| June 2026 | 26 | 26 | 11.5% | 0 |
| July 2026 | 28 | 28 | 32.1% | 0 |