WN237
WN237 (Southwest Airlines) is a multi-stop service on 38 routes, busiest San Jose to Long Beach. Of 796 departures recorded from October 2024 to July 2026, 74.4% left on time, according to the US BTS.
- On-time departures74.4%of 796 flights
- Average delay12.8 min
- July 202631▼ 34.0%vs July 2025
- Cancelled0.9%
- Legs flown under this number38
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 | 37 | 30 | ▼ 18.9% |
| February | 28 | 28 | 0.0% |
| March | 31 | 43 | ▲ 38.7% |
| April | 37 | 33 | ▼ 10.8% |
| May | 39 | 31 | ▼ 20.5% |
| June | 48 | 30 | ▼ 37.5% |
| July | 47 | 31 | ▼ 34.0% |
| August | 39 | – | – |
| September | 34 | – | – |
| October | 31 | – | in progress |
| November | 30 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 267 | 226 | ▼ 15.4% |
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 | 89.2% | 63.3% | ▼ 29.0% |
| February | 96.3% | 85.2% | ▼ 11.5% |
| March | 93.6% | 80.5% | ▼ 14.0% |
| April | 81.1% | 72.7% | ▼ 10.3% |
| May | 76.9% | 61.3% | ▼ 20.3% |
| June | 66.7% | 66.7% | 0.0% |
| July | 68.1% | 67.7% | ▼ 0.5% |
| August | 66.7% | – | – |
| September | 76.5% | – | – |
| October | 61.3% | – | in progress |
| November | 78.6% | – | – |
| December | 58.1% | – | – |
| Year-to-date average (Jan–Jul) | 81.7% | 71.1% | ▼ 13.0% |
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 | 0 | – |
| February | 1 | 1 | 0.0% |
| March | 0 | 2 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 2 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 1 | 3 | ▲ 200.0% |
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 99.1% 789
- Cancelled 0.9% 7
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
11Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 26 | 26 | 88.5% | 0 |
| November 2024 | 47 | 47 | 78.7% | 0 |
| December 2024 | 65 | 64 | 70.3% | 1 |
| January 2025 | 37 | 37 | 89.2% | 0 |
| February 2025 | 28 | 27 | 96.3% | 1 |
| March 2025 | 31 | 31 | 93.6% | 0 |
| April 2025 | 37 | 37 | 81.1% | 0 |
| May 2025 | 39 | 39 | 76.9% | 0 |
| June 2025 | 48 | 48 | 66.7% | 0 |
| July 2025 | 47 | 47 | 68.1% | 0 |
| August 2025 | 39 | 39 | 66.7% | 0 |
| September 2025 | 34 | 34 | 76.5% | 0 |
| October 2025 | 31 | 31 | 61.3% | 0 |
| November 2025 | 30 | 28 | 78.6% | 2 |
| December 2025 | 31 | 31 | 58.1% | 0 |
| January 2026 | 30 | 30 | 63.3% | 0 |
| February 2026 | 28 | 27 | 85.2% | 1 |
| March 2026 | 43 | 41 | 80.5% | 2 |
| April 2026 | 33 | 33 | 72.7% | 0 |
| May 2026 | 31 | 31 | 61.3% | 0 |
| June 2026 | 30 | 30 | 66.7% | 0 |
| July 2026 | 31 | 31 | 67.7% | 0 |