WN4260
WN4260 (Southwest Airlines) is a multi-stop service on 20 routes, busiest Seattle to San Jose. Of 396 departures recorded from October 2024 to July 2026, 81.0% left on time, according to the US BTS.
- On-time departures81.0%of 396 flights
- Average delay8.0 min
- July 202630
- Cancelled0.5%
- Legs flown under this number20
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods18 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 1 | 3 | ▲ 200.0% |
| February | 2 | 2 | 0.0% |
| March | 27 | 31 | ▲ 14.8% |
| April | 30 | 18 | ▼ 40.0% |
| May | 31 | 12 | ▼ 61.3% |
| June | 4 | 29 | ▲ 625.0% |
| July | – | 30 | – |
| August | 26 | – | – |
| September | 30 | – | – |
| October | 1 | – | in progress |
| November | 41 | – | – |
| December | 47 | – | – |
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 periods18 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 100.0% | 100.0% | 0.0% |
| February | 100.0% | 50.0% | ▼ 50.0% |
| March | 96.3% | 67.7% | ▼ 29.7% |
| April | 86.7% | 88.9% | ▲ 2.6% |
| May | 90.3% | 33.3% | ▼ 63.1% |
| June | 100.0% | 41.4% | ▼ 58.6% |
| July | – | 53.3% | – |
| August | 73.1% | – | – |
| September | 83.3% | – | – |
| October | 100.0% | – | in progress |
| November | 94.9% | – | – |
| December | 100.0% | – | – |
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 periods18 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | – | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 2 | – | – |
| December | 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 99.5% 394
- Cancelled 0.5% 2
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
5| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| SEA SJC Seattle–Tacoma International Airport – Mineta San Jose International Airport | 1,122 | 5.3 min | 79.0% | 57 |
| SAN SMF San Diego International Airport – Sacramento International Airport | 773 | -4.0 min | 97.6% | 43 |
| OAK PSP Oakland San Francisco Bay Airport – Palm Springs International Airport | 673 | 7.8 min | 85.7% | 42 |
| MKE BNA General Mitchell International Airport – Nashville International Airport | 766 | -2.2 min | 93.9% | 33 |
| ELP SAT El Paso International Airport – San Antonio International Airport | 797 | 29.4 min | 45.2% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 13 | 13 | 92.3% | 0 |
| November 2024 | 14 | 14 | 100.0% | 0 |
| December 2024 | 4 | 4 | 100.0% | 0 |
| January 2025 | 1 | 1 | 100.0% | 0 |
| February 2025 | 2 | 2 | 100.0% | 0 |
| March 2025 | 27 | 27 | 96.3% | 0 |
| April 2025 | 30 | 30 | 86.7% | 0 |
| May 2025 | 31 | 31 | 90.3% | 0 |
| June 2025 | 4 | 4 | 100.0% | 0 |
| August 2025 | 26 | 26 | 73.1% | 0 |
| September 2025 | 30 | 30 | 83.3% | 0 |
| October 2025 | 1 | 1 | 100.0% | 0 |
| November 2025 | 41 | 39 | 94.9% | 2 |
| December 2025 | 47 | 47 | 100.0% | 0 |
| January 2026 | 3 | 3 | 100.0% | 0 |
| February 2026 | 2 | 2 | 50.0% | 0 |
| March 2026 | 31 | 31 | 67.7% | 0 |
| April 2026 | 18 | 18 | 88.9% | 0 |
| May 2026 | 12 | 12 | 33.3% | 0 |
| June 2026 | 29 | 29 | 41.4% | 0 |
| July 2026 | 30 | 30 | 53.3% | 0 |