WN866
WN866 (Southwest Airlines) is a multi-stop service on 45 routes, busiest Phoenix to El Paso. Of 845 departures recorded from October 2024 to July 2026, 73.8% left on time, according to the US BTS.
- On-time departures73.8%of 845 flights
- Average delay13.5 min
- July 202634▲ 13.3%vs July 2025
- Cancelled1.4%
- Legs flown under this number45
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 | 60 | 29 | ▼ 51.7% |
| February | 41 | 35 | ▼ 14.6% |
| March | 45 | 32 | ▼ 28.9% |
| April | 34 | 43 | ▲ 26.5% |
| May | 31 | 49 | ▲ 58.1% |
| June | 30 | 35 | ▲ 16.7% |
| July | 30 | 34 | ▲ 13.3% |
| August | 64 | – | – |
| September | 69 | – | – |
| October | 18 | – | in progress |
| November | 27 | – | – |
| December | 28 | – | – |
| Year to date (Jan–Jul) | 271 | 257 | ▼ 5.2% |
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 | 66.1% | 96.3% | ▲ 45.7% |
| February | 75.6% | 76.5% | ▲ 1.1% |
| March | 86.4% | 42.9% | ▼ 50.4% |
| April | 100.0% | 61.0% | ▼ 39.0% |
| May | 87.1% | 53.1% | ▼ 39.1% |
| June | 86.7% | 65.7% | ▼ 24.2% |
| July | 80.0% | 88.2% | ▲ 10.3% |
| August | 75.0% | – | – |
| September | 76.8% | – | – |
| October | 61.1% | – | in progress |
| November | 63.0% | – | – |
| December | 57.1% | – | – |
| Year-to-date average (Jan–Jul) | 83.1% | 69.1% | ▼ 16.9% |
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 | 1 | 2 | ▲ 100.0% |
| February | 0 | 1 | – |
| March | 1 | 4 | ▲ 300.0% |
| April | 0 | 2 | – |
| 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) | 2 | 9 | ▲ 350.0% |
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% 833
- Cancelled 1.4% 12
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 | 20 | 20 | 100.0% | 0 |
| November 2024 | 35 | 35 | 88.6% | 0 |
| December 2024 | 56 | 55 | 58.2% | 1 |
| January 2025 | 60 | 59 | 66.1% | 1 |
| February 2025 | 41 | 41 | 75.6% | 0 |
| March 2025 | 45 | 44 | 86.4% | 1 |
| April 2025 | 34 | 34 | 100.0% | 0 |
| May 2025 | 31 | 31 | 87.1% | 0 |
| June 2025 | 30 | 30 | 86.7% | 0 |
| July 2025 | 30 | 30 | 80.0% | 0 |
| August 2025 | 64 | 64 | 75.0% | 0 |
| September 2025 | 69 | 69 | 76.8% | 0 |
| October 2025 | 18 | 18 | 61.1% | 0 |
| November 2025 | 27 | 27 | 63.0% | 0 |
| December 2025 | 28 | 28 | 57.1% | 0 |
| January 2026 | 29 | 27 | 96.3% | 2 |
| February 2026 | 35 | 34 | 76.5% | 1 |
| March 2026 | 32 | 28 | 42.9% | 4 |
| April 2026 | 43 | 41 | 61.0% | 2 |
| May 2026 | 49 | 49 | 53.1% | 0 |
| June 2026 | 35 | 35 | 65.7% | 0 |
| July 2026 | 34 | 34 | 88.2% | 0 |