WN3871
WN3871 (Southwest Airlines) is a multi-stop service on 23 routes, busiest Las Vegas to San Jose. Of 458 departures recorded from October 2024 to July 2026, 74.8% left on time, according to the US BTS.
- On-time departures74.8%of 458 flights
- Average delay13.3 min
- July 202623▲ 360.0%vs July 2025
- Cancelled1.1%
- 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 periods17 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 25 | 22 | ▼ 12.0% |
| February | 20 | 62 | ▲ 210.0% |
| March | 31 | 20 | ▼ 35.5% |
| April | 27 | 46 | ▲ 70.4% |
| May | 26 | 57 | ▲ 119.2% |
| June | 8 | 24 | ▲ 200.0% |
| July | 5 | 23 | ▲ 360.0% |
| August | 1 | – | – |
| September | – | – | – |
| October | 18 | – | in progress |
| November | 1 | – | – |
| December | – | – | – |
| Year to date (Jan–Jul) | 142 | 254 | ▲ 78.9% |
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 periods17 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 92.0% | 95.0% | ▲ 3.3% |
| February | 95.0% | 83.6% | ▼ 12.0% |
| March | 51.6% | 90.0% | ▲ 74.4% |
| April | 63.0% | 52.2% | ▼ 17.1% |
| May | 65.4% | 63.2% | ▼ 3.4% |
| June | 87.5% | 75.0% | ▼ 14.3% |
| July | 80.0% | 100.0% | ▲ 25.0% |
| August | 100.0% | – | – |
| September | – | – | – |
| October | 61.1% | – | in progress |
| November | 0.0% | – | – |
| December | – | – | – |
| Year-to-date average (Jan–Jul) | 76.4% | 79.8% | ▲ 4.6% |
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 periods17 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 2 | – |
| February | 0 | 1 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 2 | – |
| August | 0 | – | – |
| September | – | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | – | – | – |
| 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 98.9% 453
- Cancelled 1.1% 5
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 |
|---|---|---|---|---|
| LAS SJC Harry Reid International Airport – Mineta San Jose International Airport | 620 | 2.4 min | 91.8% | 73 |
| LGB SMF Long Beach International Airport – Sacramento International Airport | 624 | 11.5 min | 72.0% | 50 |
| AUS LBB Austin Bergstrom International Airport – Lubbock Preston Smith International Airport | 550 | 0.2 min | 85.4% | 50 |
| SNA SMF John Wayne Orange County International Airport – Sacramento International Airport | 650 | 15.1 min | 87.5% | 42 |
| LAS AUS Harry Reid International Airport – Austin Bergstrom International Airport | 1,752 | 30.9 min | 52.4% | 42 |
| DEN JAX Denver International Airport – Jacksonville International Airport | 2,325 | 28.6 min | 39.4% | 33 |
| SNA LAS John Wayne Orange County International Airport – Harry Reid International Airport | 365 | 27.6 min | 50.0% | 32 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 10 | 10 | 80.0% | 0 |
| November 2024 | 14 | 14 | 85.7% | 0 |
| December 2024 | 18 | 18 | 94.4% | 0 |
| January 2025 | 25 | 25 | 92.0% | 0 |
| February 2025 | 20 | 20 | 95.0% | 0 |
| March 2025 | 31 | 31 | 51.6% | 0 |
| April 2025 | 27 | 27 | 63.0% | 0 |
| May 2025 | 26 | 26 | 65.4% | 0 |
| June 2025 | 8 | 8 | 87.5% | 0 |
| July 2025 | 5 | 5 | 80.0% | 0 |
| August 2025 | 1 | 1 | 100.0% | 0 |
| October 2025 | 18 | 18 | 61.1% | 0 |
| November 2025 | 1 | 1 | 0.0% | 0 |
| January 2026 | 22 | 20 | 95.0% | 2 |
| February 2026 | 62 | 61 | 83.6% | 1 |
| March 2026 | 20 | 20 | 90.0% | 0 |
| April 2026 | 46 | 46 | 52.2% | 0 |
| May 2026 | 57 | 57 | 63.2% | 0 |
| June 2026 | 24 | 24 | 75.0% | 0 |
| July 2026 | 23 | 21 | 100.0% | 2 |