WN4246
WN4246 (Southwest Airlines) is a multi-stop service on 14 routes, busiest San Jose to Denver. Of 280 departures recorded from October 2024 to July 2026, 65.7% left on time, according to the US BTS.
- On-time departures65.7%of 280 flights
- Average delay16.9 min
- July 202623▲ 9.5%vs July 2025
- Cancelled1.1%
- Legs flown under this number14
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods14 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 6 | 2 | ▼ 66.7% |
| February | 3 | – | – |
| March | 23 | 39 | ▲ 69.6% |
| April | 6 | 9 | ▲ 50.0% |
| May | – | – | – |
| June | 20 | 19 | ▼ 5.0% |
| July | 21 | 23 | ▲ 9.5% |
| August | 4 | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 15 | – | – |
| December | 6 | – | – |
according to the US BTS · October 2024 → July 2026
On-time departures by month
Months without data are left blank.
On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.
The most recent periods14 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 50.0% | 100.0% | ▲ 100.0% |
| February | 66.7% | – | – |
| March | 47.8% | 68.4% | ▲ 43.0% |
| April | 50.0% | 66.7% | ▲ 33.3% |
| May | – | – | – |
| June | 100.0% | 36.8% | ▼ 63.2% |
| July | 100.0% | 43.5% | ▼ 56.5% |
| August | 75.0% | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 50.0% | – | – |
| December | 20.0% | – | – |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
Months without data are left blank.
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
Months without data are left blank.
The most recent periods14 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | 0 | – | – |
| March | 0 | 1 | – |
| April | 0 | 0 | – |
| May | – | – | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 1 | – | – |
| December | 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 98.9% 277
- Cancelled 1.1% 3
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
3| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| SJC DEN Mineta San Jose International Airport – Denver International Airport | 1,522 | 26.1 min | 45.2% | 62 |
| LGA MDW LaGuardia Airport – Chicago Midway International Airport | 1,164 | 27.1 min | 60.0% | 60 |
| SJC OGG Mineta San Jose International Airport – Kahului International Airport | 3,788 | 0.0 min | 97.8% | 45 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 27 | 27 | 88.9% | 0 |
| November 2024 | 28 | 28 | 71.4% | 0 |
| December 2024 | 29 | 29 | 55.2% | 0 |
| January 2025 | 6 | 6 | 50.0% | 0 |
| February 2025 | 3 | 3 | 66.7% | 0 |
| March 2025 | 23 | 23 | 47.8% | 0 |
| April 2025 | 6 | 6 | 50.0% | 0 |
| June 2025 | 20 | 20 | 100.0% | 0 |
| July 2025 | 21 | 21 | 100.0% | 0 |
| August 2025 | 4 | 4 | 75.0% | 0 |
| November 2025 | 15 | 14 | 50.0% | 1 |
| December 2025 | 6 | 5 | 20.0% | 1 |
| January 2026 | 2 | 2 | 100.0% | 0 |
| March 2026 | 39 | 38 | 68.4% | 1 |
| April 2026 | 9 | 9 | 66.7% | 0 |
| June 2026 | 19 | 19 | 36.8% | 0 |
| July 2026 | 23 | 23 | 43.5% | 0 |