WN4296
WN4296 (Southwest Airlines) is a multi-stop service on 14 routes, busiest Ontario to Phoenix. Of 371 departures recorded from October 2024 to July 2026, 90.5% left on time, according to the US BTS.
- On-time departures90.5%of 371 flights
- Average delay2.3 min
- July 202621▲ 425.0%vs July 2025
- Cancelled0.3%
- Legs flown under this number14
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 | 26 | 2 | ▼ 92.3% |
| February | 26 | 7 | ▼ 73.1% |
| March | 31 | 1 | ▼ 96.8% |
| April | 7 | 11 | ▲ 57.1% |
| May | 1 | 12 | ▲ 1,100.0% |
| June | 4 | 22 | ▲ 450.0% |
| July | 4 | 21 | ▲ 425.0% |
| August | 28 | – | – |
| September | 30 | – | – |
| October | 27 | – | in progress |
| November | 24 | – | – |
| December | 20 | – | – |
| Year to date (Jan–Jul) | 99 | 76 | ▼ 23.2% |
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 | 92.0% | 100.0% | ▲ 8.7% |
| February | 100.0% | 100.0% | 0.0% |
| March | 77.4% | 100.0% | ▲ 29.2% |
| April | 85.7% | 100.0% | ▲ 16.7% |
| May | 100.0% | 100.0% | 0.0% |
| June | 100.0% | 100.0% | 0.0% |
| July | 75.0% | 95.2% | ▲ 27.0% |
| August | 85.7% | – | – |
| September | 83.3% | – | – |
| October | 81.5% | – | in progress |
| November | 91.7% | – | – |
| December | 100.0% | – | – |
| Year-to-date average (Jan–Jul) | 90.0% | 99.3% | ▲ 10.3% |
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 | 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) | 1 | 0 | ▼ 100.0% |
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 99.7% 370
- Cancelled 0.3% 1
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 |
|---|---|---|---|---|
| ONT PHX Ontario International Airport – Phoenix Sky Harbor International Airport | 522 | 1.2 min | 91.9% | 75 |
| SMF BOI Sacramento International Airport – Boise Air Terminal/Gowen Field | 703 | 5.7 min | 84.5% | 58 |
| SEA PHX Seattle–Tacoma International Airport – Phoenix Sky Harbor International Airport | 1,782 | 0.8 min | 97.8% | 45 |
| SNA LAS John Wayne Orange County International Airport – Harry Reid International Airport | 365 | -4.1 min | 97.6% | 41 |
| BUR SJC Hollywood Burbank/Bob Hope Airport – Mineta San Jose International Airport | 477 | 8.5 min | 78.8% | 33 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 95.0% | 0 |
| November 2024 | 19 | 19 | 100.0% | 0 |
| December 2024 | 28 | 28 | 78.6% | 0 |
| January 2025 | 26 | 25 | 92.0% | 1 |
| February 2025 | 26 | 26 | 100.0% | 0 |
| March 2025 | 31 | 31 | 77.4% | 0 |
| April 2025 | 7 | 7 | 85.7% | 0 |
| May 2025 | 1 | 1 | 100.0% | 0 |
| June 2025 | 4 | 4 | 100.0% | 0 |
| July 2025 | 4 | 4 | 75.0% | 0 |
| August 2025 | 28 | 28 | 85.7% | 0 |
| September 2025 | 30 | 30 | 83.3% | 0 |
| October 2025 | 27 | 27 | 81.5% | 0 |
| November 2025 | 24 | 24 | 91.7% | 0 |
| December 2025 | 20 | 20 | 100.0% | 0 |
| January 2026 | 2 | 2 | 100.0% | 0 |
| February 2026 | 7 | 7 | 100.0% | 0 |
| March 2026 | 1 | 1 | 100.0% | 0 |
| April 2026 | 11 | 11 | 100.0% | 0 |
| May 2026 | 12 | 12 | 100.0% | 0 |
| June 2026 | 22 | 22 | 100.0% | 0 |
| July 2026 | 21 | 21 | 95.2% | 0 |