WN3597
WN3597 (Southwest Airlines) is a multi-stop service on 29 routes, busiest Los Angeles to San Jose. Of 566 departures recorded from October 2024 to July 2026, 82.8% left on time, according to the US BTS.
- On-time departures82.8%of 566 flights
- Average delay8.3 min
- July 202631▲ 675.0%vs July 2025
- Cancelled0.2%
- Legs flown under this number29
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 | 34 | 5 | ▼ 85.3% |
| February | 30 | 3 | ▼ 90.0% |
| March | 47 | 27 | ▼ 42.6% |
| April | 11 | 30 | ▲ 172.7% |
| May | – | 31 | – |
| June | 4 | 30 | ▲ 650.0% |
| July | 4 | 31 | ▲ 675.0% |
| August | 30 | – | – |
| September | 34 | – | – |
| October | 47 | – | in progress |
| November | 42 | – | – |
| December | 34 | – | – |
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 | 79.4% | 100.0% | ▲ 25.9% |
| February | 83.3% | 100.0% | ▲ 20.0% |
| March | 91.5% | 74.1% | ▼ 19.0% |
| April | 81.8% | 90.0% | ▲ 10.0% |
| May | – | 93.6% | – |
| June | 50.0% | 43.3% | ▼ 13.3% |
| July | 100.0% | 60.0% | ▼ 40.0% |
| August | 90.0% | – | – |
| September | 97.1% | – | – |
| October | 91.5% | – | in progress |
| November | 92.9% | – | – |
| December | 79.4% | – | – |
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 | – |
| June | 0 | 0 | – |
| July | 0 | 1 | – |
| 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% 565
- 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 | 9.1 min | 81.0% | 116 |
| OGG HNL Kahului International Airport – Daniel K. Inouye International Airport | 162 | -1.2 min | 91.4% | 58 |
| DAL BNA Dallas Love Field – Nashville International Airport | 1,000 | 5.7 min | 93.0% | 57 |
| STL DAL St. Louis Lambert International Airport – Dallas Love Field | 878 | 28.2 min | 44.9% | 50 |
| PDX DEN Portland International Airport – Denver International Airport | 1,592 | 2.4 min | 95.5% | 44 |
| SJU BWI Luis Munoz Marin International Airport – Baltimore/Washington International Thurgood Marshall Airport | 2,525 | 17.4 min | 78.8% | 33 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 85.0% | 0 |
| November 2024 | 35 | 35 | 82.9% | 0 |
| December 2024 | 37 | 37 | 75.7% | 0 |
| January 2025 | 34 | 34 | 79.4% | 0 |
| February 2025 | 30 | 30 | 83.3% | 0 |
| March 2025 | 47 | 47 | 91.5% | 0 |
| April 2025 | 11 | 11 | 81.8% | 0 |
| June 2025 | 4 | 4 | 50.0% | 0 |
| July 2025 | 4 | 4 | 100.0% | 0 |
| August 2025 | 30 | 30 | 90.0% | 0 |
| September 2025 | 34 | 34 | 97.1% | 0 |
| October 2025 | 47 | 47 | 91.5% | 0 |
| November 2025 | 42 | 42 | 92.9% | 0 |
| December 2025 | 34 | 34 | 79.4% | 0 |
| January 2026 | 5 | 5 | 100.0% | 0 |
| February 2026 | 3 | 3 | 100.0% | 0 |
| March 2026 | 27 | 27 | 74.1% | 0 |
| April 2026 | 30 | 30 | 90.0% | 0 |
| May 2026 | 31 | 31 | 93.6% | 0 |
| June 2026 | 30 | 30 | 43.3% | 0 |
| July 2026 | 31 | 30 | 60.0% | 1 |