WN3429
WN3429 (Southwest Airlines) is a multi-stop service on 21 routes, busiest Los Angeles to San Jose. Of 451 departures recorded from October 2024 to July 2026, 81.8% left on time, according to the US BTS.
- On-time departures81.8%of 451 flights
- Average delay11.3 min
- July 202614▼ 53.3%vs July 2025
- Cancelled0.2%
- Legs flown under this number21
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 | 9 | 3 | ▼ 66.7% |
| February | 9 | – | – |
| March | 60 | 27 | ▼ 55.0% |
| April | 38 | 9 | ▼ 76.3% |
| May | 31 | 5 | ▼ 83.9% |
| June | 30 | 12 | ▼ 60.0% |
| July | 30 | 14 | ▼ 53.3% |
| August | 20 | – | – |
| September | 17 | – | – |
| October | 29 | – | in progress |
| November | 27 | – | – |
| December | 22 | – | – |
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 | 88.9% | 100.0% | ▲ 12.5% |
| February | 77.8% | – | – |
| March | 93.3% | 100.0% | ▲ 7.1% |
| April | 76.3% | 77.8% | ▲ 1.9% |
| May | 77.4% | 40.0% | ▼ 48.3% |
| June | 76.7% | 33.3% | ▼ 56.5% |
| July | 96.7% | 42.9% | ▼ 55.7% |
| August | 75.0% | – | – |
| September | 76.5% | – | – |
| October | 86.2% | – | in progress |
| November | 88.9% | – | – |
| December | 81.8% | – | – |
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 | – | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| 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 99.8% 450
- Cancelled 0.2% 1
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
6| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| LAX SJC Los Angeles International Airport – Mineta San Jose International Airport | 496 | 4.7 min | 83.1% | 65 |
| SJC BOI Mineta San Jose International Airport – Boise Air Terminal/Gowen Field | 841 | 4.3 min | 88.3% | 60 |
| SEA DEN Seattle–Tacoma International Airport – Denver International Airport | 1,645 | 30.6 min | 66.7% | 42 |
| LGA DAL LaGuardia Airport – Dallas Love Field | 2,219 | 10.6 min | 90.5% | 42 |
| IND TPA Indianapolis International Airport – Tampa International Airport | 1,351 | -2.9 min | 100.0% | 33 |
| SNA SJC John Wayne Orange County International Airport – Mineta San Jose International Airport | 550 | 6.8 min | 86.7% | 30 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 95.0% | 0 |
| November 2024 | 21 | 21 | 81.0% | 0 |
| December 2024 | 18 | 17 | 70.6% | 1 |
| January 2025 | 9 | 9 | 88.9% | 0 |
| February 2025 | 9 | 9 | 77.8% | 0 |
| March 2025 | 60 | 60 | 93.3% | 0 |
| April 2025 | 38 | 38 | 76.3% | 0 |
| May 2025 | 31 | 31 | 77.4% | 0 |
| June 2025 | 30 | 30 | 76.7% | 0 |
| July 2025 | 30 | 30 | 96.7% | 0 |
| August 2025 | 20 | 20 | 75.0% | 0 |
| September 2025 | 17 | 17 | 76.5% | 0 |
| October 2025 | 29 | 29 | 86.2% | 0 |
| November 2025 | 27 | 27 | 88.9% | 0 |
| December 2025 | 22 | 22 | 81.8% | 0 |
| January 2026 | 3 | 3 | 100.0% | 0 |
| March 2026 | 27 | 27 | 100.0% | 0 |
| April 2026 | 9 | 9 | 77.8% | 0 |
| May 2026 | 5 | 5 | 40.0% | 0 |
| June 2026 | 12 | 12 | 33.3% | 0 |
| July 2026 | 14 | 14 | 42.9% | 0 |