WN4286
WN4286 (Southwest Airlines) is a multi-stop service on 20 routes, busiest Phoenix to San Jose. Of 399 departures recorded from October 2024 to July 2026, 71.7% left on time, according to the US BTS.
- On-time departures71.7%of 399 flights
- Average delay14.7 min
- July 202627▲ 125.0%vs July 2025
- Cancelled0.0%
- Legs flown under this number20
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 | 5 | 28 | ▲ 460.0% |
| February | 2 | 28 | ▲ 1,300.0% |
| March | 9 | 27 | ▲ 200.0% |
| April | 2 | 29 | ▲ 1,350.0% |
| May | 1 | 31 | ▲ 3,000.0% |
| June | 12 | 22 | ▲ 83.3% |
| July | 12 | 27 | ▲ 125.0% |
| August | 19 | – | – |
| September | 17 | – | – |
| October | 15 | – | in progress |
| November | 25 | – | – |
| December | 22 | – | – |
| Year to date (Jan–Jul) | 43 | 192 | ▲ 346.5% |
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 | 100.0% | 96.4% | ▼ 3.6% |
| February | 100.0% | 100.0% | 0.0% |
| March | 88.9% | 59.3% | ▼ 33.3% |
| April | 50.0% | 86.2% | ▲ 72.4% |
| May | 100.0% | 58.1% | ▼ 41.9% |
| June | 50.0% | 31.8% | ▼ 36.4% |
| July | 58.3% | 25.9% | ▼ 55.5% |
| August | 94.7% | – | – |
| September | 94.1% | – | – |
| October | 80.0% | – | in progress |
| November | 84.0% | – | – |
| December | 68.2% | – | – |
| Year-to-date average (Jan–Jul) | 78.2% | 65.4% | ▼ 16.4% |
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 | 0 | – |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 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 100.0% 399
- Cancelled 0.0% 0
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
5| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| SJU MCO Luis Munoz Marin International Airport – Orlando International Airport | 1,913 | 12.3 min | 70.7% | 58 |
| PHX SJC Phoenix Sky Harbor International Airport – Mineta San Jose International Airport | 999 | -3.8 min | 98.3% | 58 |
| BNA MDW Nashville International Airport – Chicago Midway International Airport | 636 | 41.9 min | 21.4% | 42 |
| BWI SAV Baltimore/Washington International Thurgood Marshall Airport – Savannah Hilton Head International Airport | 884 | 19.8 min | 61.1% | 36 |
| LAS MDW Harry Reid International Airport – Chicago Midway International Airport | 2,442 | 1.6 min | 97.1% | 34 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 15 | 15 | 80.0% | 0 |
| November 2024 | 32 | 32 | 65.6% | 0 |
| December 2024 | 19 | 19 | 68.4% | 0 |
| January 2025 | 5 | 5 | 100.0% | 0 |
| February 2025 | 2 | 2 | 100.0% | 0 |
| March 2025 | 9 | 9 | 88.9% | 0 |
| April 2025 | 2 | 2 | 50.0% | 0 |
| May 2025 | 1 | 1 | 100.0% | 0 |
| June 2025 | 12 | 12 | 50.0% | 0 |
| July 2025 | 12 | 12 | 58.3% | 0 |
| August 2025 | 19 | 19 | 94.7% | 0 |
| September 2025 | 17 | 17 | 94.1% | 0 |
| October 2025 | 15 | 15 | 80.0% | 0 |
| November 2025 | 25 | 25 | 84.0% | 0 |
| December 2025 | 22 | 22 | 68.2% | 0 |
| January 2026 | 28 | 28 | 96.4% | 0 |
| February 2026 | 28 | 28 | 100.0% | 0 |
| March 2026 | 27 | 27 | 59.3% | 0 |
| April 2026 | 29 | 29 | 86.2% | 0 |
| May 2026 | 31 | 31 | 58.1% | 0 |
| June 2026 | 22 | 22 | 31.8% | 0 |
| July 2026 | 27 | 27 | 25.9% | 0 |