WN3823
WN3823 (Southwest Airlines) is a multi-stop service on 23 routes, busiest San Jose to San Diego. Of 435 departures recorded from October 2024 to July 2026, 73.2% left on time, according to the US BTS.
- On-time departures73.2%of 435 flights
- Average delay14.4 min
- July 202616▼ 40.7%vs July 2025
- Cancelled1.4%
- Legs flown under this number23
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 | 29 | 2 | ▼ 93.1% |
| February | 38 | 7 | ▼ 81.6% |
| March | 57 | 42 | ▼ 26.3% |
| April | 28 | 8 | ▼ 71.4% |
| May | 16 | 2 | ▼ 87.5% |
| June | 25 | 15 | ▼ 40.0% |
| July | 27 | 16 | ▼ 40.7% |
| August | 17 | – | – |
| September | 17 | – | – |
| October | 25 | – | in progress |
| November | – | – | – |
| December | 8 | – | – |
| Year to date (Jan–Jul) | 220 | 92 | ▼ 58.2% |
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 | 89.3% | 100.0% | ▲ 12.0% |
| February | 86.8% | 85.7% | ▼ 1.3% |
| March | 82.5% | 63.4% | ▼ 23.1% |
| April | 70.4% | 100.0% | ▲ 42.1% |
| May | 87.5% | 100.0% | ▲ 14.3% |
| June | 24.0% | 46.7% | ▲ 94.5% |
| July | 26.9% | 53.3% | ▲ 98.1% |
| August | 76.5% | – | – |
| September | 70.6% | – | – |
| October | 76.0% | – | in progress |
| November | – | – | – |
| December | 87.5% | – | – |
| Year-to-date average (Jan–Jul) | 66.8% | 78.4% | ▲ 17.5% |
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 | 1 | 0 | ▼ 100.0% |
| February | 0 | 0 | – |
| March | 0 | 1 | – |
| April | 1 | 0 | ▼ 100.0% |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 1 | 1 | 0.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | – | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 3 | 2 | ▼ 33.3% |
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 98.6% 429
- Cancelled 1.4% 6
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 29, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
7| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| SJC SAN Mineta San Jose International Airport – San Diego International Airport | 671 | 1.7 min | 89.0% | 84 |
| MDW DEN Chicago Midway International Airport – Denver International Airport | 1,438 | 46.3 min | 22.0% | 51 |
| MHT MDW Manchester-Boston Regional Airport – Chicago Midway International Airport | 1,345 | 5.5 min | 78.8% | 33 |
| MDW SAT Chicago Midway International Airport – San Antonio International Airport | 1,668 | 18.6 min | 68.8% | 33 |
| DEN TPA Denver International Airport – Tampa International Airport | 2,423 | 3.1 min | 93.9% | 33 |
| DEN OKC Denver International Airport – OKC Will Rogers World Airport | 796 | 25.6 min | 62.5% | 33 |
| MSY HOU Louis Armstrong New Orleans International Airport – William P. Hobby Airport | 485 | 19.0 min | 74.2% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 100.0% | 0 |
| November 2024 | 14 | 14 | 85.7% | 0 |
| December 2024 | 22 | 21 | 100.0% | 1 |
| January 2025 | 29 | 28 | 89.3% | 1 |
| February 2025 | 38 | 38 | 86.8% | 0 |
| March 2025 | 57 | 57 | 82.5% | 0 |
| April 2025 | 28 | 27 | 70.4% | 1 |
| May 2025 | 16 | 16 | 87.5% | 0 |
| June 2025 | 25 | 25 | 24.0% | 0 |
| July 2025 | 27 | 26 | 26.9% | 1 |
| August 2025 | 17 | 17 | 76.5% | 0 |
| September 2025 | 17 | 17 | 70.6% | 0 |
| October 2025 | 25 | 25 | 76.0% | 0 |
| December 2025 | 8 | 8 | 87.5% | 0 |
| January 2026 | 2 | 2 | 100.0% | 0 |
| February 2026 | 7 | 7 | 85.7% | 0 |
| March 2026 | 42 | 41 | 63.4% | 1 |
| April 2026 | 8 | 8 | 100.0% | 0 |
| May 2026 | 2 | 2 | 100.0% | 0 |
| June 2026 | 15 | 15 | 46.7% | 0 |
| July 2026 | 16 | 15 | 53.3% | 1 |