WN3642
WN3642 (Southwest Airlines) is a multi-stop service on 27 routes, busiest San Jose to San Diego. Of 454 departures recorded from October 2024 to July 2026, 69.4% left on time, according to the US BTS.
- On-time departures69.4%of 454 flights
- Average delay18.5 min
- July 202627▲ 440.0%vs July 2025
- Cancelled1.5%
- Legs flown under this number27
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 | 22 | 6 | ▼ 72.7% |
| February | 38 | 11 | ▼ 71.1% |
| March | 33 | 5 | ▼ 84.8% |
| April | 13 | 25 | ▲ 92.3% |
| May | 9 | 31 | ▲ 244.4% |
| June | 5 | 26 | ▲ 420.0% |
| July | 5 | 27 | ▲ 440.0% |
| August | 42 | – | – |
| September | 47 | – | – |
| October | 5 | – | in progress |
| November | 3 | – | – |
| December | 2 | – | – |
| Year to date (Jan–Jul) | 125 | 131 | ▲ 4.8% |
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 | 85.7% | 66.7% | ▼ 22.2% |
| February | 68.4% | 81.8% | ▲ 19.6% |
| March | 71.9% | 80.0% | ▲ 11.3% |
| April | 76.9% | 96.0% | ▲ 24.8% |
| May | 22.2% | 96.8% | ▲ 335.5% |
| June | 40.0% | 26.9% | ▼ 32.7% |
| July | 20.0% | 24.0% | ▲ 20.0% |
| August | 59.5% | – | – |
| September | 70.2% | – | – |
| October | 80.0% | – | in progress |
| November | 66.7% | – | – |
| December | 100.0% | – | – |
| Year-to-date average (Jan–Jul) | 55.0% | 67.5% | ▲ 22.6% |
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 | 1 | 0 | ▼ 100.0% |
| February | 0 | 0 | – |
| March | 1 | 0 | ▼ 100.0% |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 2 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 2 | 2 | 0.0% |
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 98.5% 447
- Cancelled 1.5% 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
6| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| SJC SAN Mineta San Jose International Airport – San Diego International Airport | 671 | 10.9 min | 80.5% | 85 |
| OMA STL Eppley Airfield – St. Louis Lambert International Airport | 549 | 0.7 min | 96.6% | 58 |
| SFO DEN San Francisco International Airport – Denver International Airport | 1,553 | 53.5 min | 17.5% | 42 |
| PHX SLC Phoenix Sky Harbor International Airport – Salt Lake City International Airport | 818 | 26.2 min | 69.1% | 42 |
| BNA PNS Nashville International Airport – Pensacola International Airport | 630 | 13.3 min | 71.9% | 33 |
| LGB PHX Long Beach International Airport – Phoenix Sky Harbor International Airport | 570 | 26.4 min | 62.5% | 32 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 70.0% | 0 |
| November 2024 | 37 | 37 | 83.8% | 0 |
| December 2024 | 42 | 39 | 84.6% | 3 |
| January 2025 | 22 | 21 | 85.7% | 1 |
| February 2025 | 38 | 38 | 68.4% | 0 |
| March 2025 | 33 | 32 | 71.9% | 1 |
| April 2025 | 13 | 13 | 76.9% | 0 |
| May 2025 | 9 | 9 | 22.2% | 0 |
| June 2025 | 5 | 5 | 40.0% | 0 |
| July 2025 | 5 | 5 | 20.0% | 0 |
| August 2025 | 42 | 42 | 59.5% | 0 |
| September 2025 | 47 | 47 | 70.2% | 0 |
| October 2025 | 5 | 5 | 80.0% | 0 |
| November 2025 | 3 | 3 | 66.7% | 0 |
| December 2025 | 2 | 2 | 100.0% | 0 |
| January 2026 | 6 | 6 | 66.7% | 0 |
| February 2026 | 11 | 11 | 81.8% | 0 |
| March 2026 | 5 | 5 | 80.0% | 0 |
| April 2026 | 25 | 25 | 96.0% | 0 |
| May 2026 | 31 | 31 | 96.8% | 0 |
| June 2026 | 26 | 26 | 26.9% | 0 |
| July 2026 | 27 | 25 | 24.0% | 2 |