WN4487
WN4487 (Southwest Airlines) is a multi-stop service on 24 routes, busiest Phoenix to Santa Ana. Of 462 departures recorded from October 2024 to July 2026, 72.5% left on time, according to the US BTS.
- On-time departures72.5%of 462 flights
- Average delay13.4 min
- July 202627▲ 35.0%vs July 2025
- Cancelled1.7%
- Legs flown under this number24
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 | 30 | 29 | ▼ 3.3% |
| February | 23 | 38 | ▲ 65.2% |
| March | 4 | 9 | ▲ 125.0% |
| April | 15 | 17 | ▲ 13.3% |
| May | 23 | 23 | 0.0% |
| June | 22 | 24 | ▲ 9.1% |
| July | 20 | 27 | ▲ 35.0% |
| August | 42 | – | – |
| September | 42 | – | – |
| October | 1 | – | in progress |
| November | 4 | – | – |
| December | 11 | – | – |
| Year to date (Jan–Jul) | 137 | 167 | ▲ 21.9% |
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 | 90.0% | 92.6% | ▲ 2.9% |
| February | 87.0% | 55.6% | ▼ 36.1% |
| March | 50.0% | 77.8% | ▲ 55.6% |
| April | 66.7% | 62.5% | ▼ 6.3% |
| May | 50.0% | 56.5% | ▲ 13.0% |
| June | 68.2% | 41.7% | ▼ 38.9% |
| July | 55.6% | 37.0% | ▼ 33.3% |
| August | 90.5% | – | – |
| September | 83.3% | – | – |
| October | 100.0% | – | in progress |
| November | 100.0% | – | – |
| December | 100.0% | – | – |
| Year-to-date average (Jan–Jul) | 66.8% | 60.5% | ▼ 9.4% |
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 | 2 | – |
| February | 0 | 2 | – |
| March | 0 | 0 | – |
| April | 0 | 1 | – |
| May | 1 | 0 | ▼ 100.0% |
| June | 0 | 0 | – |
| July | 2 | 0 | ▼ 100.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 3 | 5 | ▲ 66.7% |
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 98.3% 454
- Cancelled 1.7% 8
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
6| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| PHX SNA Phoenix Sky Harbor International Airport – John Wayne Orange County International Airport | 544 | 1.3 min | 89.2% | 65 |
| GEG OAK Spokane International Airport – Oakland San Francisco Bay Airport | 1,165 | 4.3 min | 93.1% | 58 |
| BWI SAN Baltimore/Washington International Thurgood Marshall Airport – San Diego International Airport | 3,686 | 9.2 min | 72.6% | 53 |
| LAS COS Harry Reid International Airport – City of Colorado Springs Municipal Airport | 970 | 33.5 min | 42.9% | 42 |
| STL HOU St. Louis Lambert International Airport – William P. Hobby Airport | 1,108 | 20.5 min | 59.0% | 40 |
| STL MCO St. Louis Lambert International Airport – Orlando International Airport | 1,420 | 11.3 min | 74.2% | 32 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 29 | 29 | 86.2% | 0 |
| November 2024 | 14 | 14 | 92.9% | 0 |
| December 2024 | 15 | 15 | 80.0% | 0 |
| January 2025 | 30 | 30 | 90.0% | 0 |
| February 2025 | 23 | 23 | 87.0% | 0 |
| March 2025 | 4 | 4 | 50.0% | 0 |
| April 2025 | 15 | 15 | 66.7% | 0 |
| May 2025 | 23 | 22 | 50.0% | 1 |
| June 2025 | 22 | 22 | 68.2% | 0 |
| July 2025 | 20 | 18 | 55.6% | 2 |
| August 2025 | 42 | 42 | 90.5% | 0 |
| September 2025 | 42 | 42 | 83.3% | 0 |
| October 2025 | 1 | 1 | 100.0% | 0 |
| November 2025 | 4 | 4 | 100.0% | 0 |
| December 2025 | 11 | 11 | 100.0% | 0 |
| January 2026 | 29 | 27 | 92.6% | 2 |
| February 2026 | 38 | 36 | 55.6% | 2 |
| March 2026 | 9 | 9 | 77.8% | 0 |
| April 2026 | 17 | 16 | 62.5% | 1 |
| May 2026 | 23 | 23 | 56.5% | 0 |
| June 2026 | 24 | 24 | 41.7% | 0 |
| July 2026 | 27 | 27 | 37.0% | 0 |