WN404
WN404 (Southwest Airlines) is a multi-stop service on 41 routes, busiest San Jose to Austin. Of 705 departures recorded from October 2024 to July 2026, 80.7% left on time, according to the US BTS.
- On-time departures80.7%of 705 flights
- Average delay9.3 min
- July 202629▼ 3.3%vs July 2025
- Cancelled0.9%
- Legs flown under this number41
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 | 27 | 47 | ▲ 74.1% |
| February | 19 | 51 | ▲ 168.4% |
| March | 30 | 31 | ▲ 3.3% |
| April | 39 | 29 | ▼ 25.6% |
| May | 43 | 31 | ▼ 27.9% |
| June | 32 | 26 | ▼ 18.8% |
| July | 30 | 29 | ▼ 3.3% |
| August | 31 | – | – |
| September | 30 | – | – |
| October | 31 | – | in progress |
| November | 22 | – | – |
| December | 17 | – | – |
| Year to date (Jan–Jul) | 220 | 244 | ▲ 10.9% |
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 | 77.8% | 80.0% | ▲ 2.9% |
| February | 89.5% | 91.8% | ▲ 2.6% |
| March | 86.7% | 93.3% | ▲ 7.7% |
| April | 94.9% | 86.2% | ▼ 9.1% |
| May | 67.4% | 45.2% | ▼ 33.0% |
| June | 84.4% | 65.4% | ▼ 22.5% |
| July | 80.0% | 69.0% | ▼ 13.8% |
| August | 83.9% | – | – |
| September | 86.7% | – | – |
| October | 90.3% | – | in progress |
| November | 100.0% | – | – |
| December | 58.8% | – | – |
| Year-to-date average (Jan–Jul) | 82.9% | 75.8% | ▼ 8.6% |
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 | 0 | 2 | – |
| February | 0 | 2 | – |
| March | 0 | 1 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 1 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 0 | 5 |
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 99.1% 699
- Cancelled 0.9% 6
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
7| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| SJC AUS Mineta San Jose International Airport – Austin Bergstrom International Airport | 2,372 | 6.5 min | 80.6% | 72 |
| SJC HNL Mineta San Jose International Airport – Daniel K. Inouye International Airport | 3,886 | 9.5 min | 86.2% | 58 |
| LGA MDW LaGuardia Airport – Chicago Midway International Airport | 1,164 | 10.7 min | 63.8% | 58 |
| ATL LAS Hartsfield Jackson Atlanta International Airport – Harry Reid International Airport | 2,805 | 22.4 min | 76.2% | 42 |
| LIT DAL Bill & Hillary Clinton National Airport/Adams Field – Dallas Love Field | 476 | 2.6 min | 87.5% | 41 |
| ISP MCO Long Island MacArthur Airport – Orlando International Airport | 1,565 | 10.6 min | 87.9% | 33 |
| MDW BOS Chicago Midway International Airport – Boston Logan International Airport | 1,381 | 1.4 min | 93.8% | 32 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 27 | 27 | 96.3% | 0 |
| November 2024 | 35 | 35 | 77.1% | 0 |
| December 2024 | 48 | 48 | 70.8% | 0 |
| January 2025 | 27 | 27 | 77.8% | 0 |
| February 2025 | 19 | 19 | 89.5% | 0 |
| March 2025 | 30 | 30 | 86.7% | 0 |
| April 2025 | 39 | 39 | 94.9% | 0 |
| May 2025 | 43 | 43 | 67.4% | 0 |
| June 2025 | 32 | 32 | 84.4% | 0 |
| July 2025 | 30 | 30 | 80.0% | 0 |
| August 2025 | 31 | 31 | 83.9% | 0 |
| September 2025 | 30 | 30 | 86.7% | 0 |
| October 2025 | 31 | 31 | 90.3% | 0 |
| November 2025 | 22 | 21 | 100.0% | 1 |
| December 2025 | 17 | 17 | 58.8% | 0 |
| January 2026 | 47 | 45 | 80.0% | 2 |
| February 2026 | 51 | 49 | 91.8% | 2 |
| March 2026 | 31 | 30 | 93.3% | 1 |
| April 2026 | 29 | 29 | 86.2% | 0 |
| May 2026 | 31 | 31 | 45.2% | 0 |
| June 2026 | 26 | 26 | 65.4% | 0 |
| July 2026 | 29 | 29 | 69.0% | 0 |