WN4584
WN4584 (Southwest Airlines) is a multi-stop service on 16 routes, busiest Santa Ana to Denver. Of 289 departures recorded from October 2024 to July 2026, 67.8% left on time, according to the US BTS.
- On-time departures67.8%of 289 flights
- Average delay21.2 min
- July 202623▼ 4.2%vs July 2025
- Cancelled1.0%
- Legs flown under this number16
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods16 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 8 | 6 | ▼ 25.0% |
| February | 7 | 15 | ▲ 114.3% |
| March | 17 | 28 | ▲ 64.7% |
| April | 4 | 20 | ▲ 400.0% |
| May | – | 18 | – |
| June | 18 | 21 | ▲ 16.7% |
| July | 24 | 23 | ▼ 4.2% |
| August | 2 | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 3 | – | – |
| December | 2 | – | – |
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 periods16 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 62.5% | 83.3% | ▲ 33.3% |
| February | 42.9% | 73.3% | ▲ 71.1% |
| March | 100.0% | 92.9% | ▼ 7.1% |
| April | 75.0% | 45.0% | ▼ 40.0% |
| May | – | 22.2% | – |
| June | 66.7% | 90.5% | ▲ 35.7% |
| July | 62.5% | 95.5% | ▲ 52.7% |
| August | 100.0% | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 66.7% | – | – |
| December | 0.0% | – | – |
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 periods16 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | – | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 1 | – |
| August | 1 | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 0 | – | – |
| December | 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 99.0% 286
- Cancelled 1.0% 3
Share of all recorded flights in the period, all legs. · Oct 13, 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 |
|---|---|---|---|---|
| SNA DEN John Wayne Orange County International Airport – Denver International Airport | 1,360 | 39.9 min | 64.3% | 43 |
| ISP BWI Long Island MacArthur Airport – Baltimore/Washington International Thurgood Marshall Airport | 353 | -1.7 min | 97.6% | 42 |
| TUS DAL Tucson International Airport – Dallas Love Field | 1,323 | 17.2 min | 57.1% | 36 |
| SFO LAX San Francisco International Airport – Los Angeles International Airport | 543 | 63.6 min | 18.2% | 33 |
| TYS BWI McGhee Tyson Airport – Baltimore/Washington International Thurgood Marshall Airport | 746 | 1.5 min | 93.8% | 32 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 16 | 16 | 62.5% | 0 |
| November 2024 | 43 | 42 | 59.5% | 1 |
| December 2024 | 14 | 14 | 42.9% | 0 |
| January 2025 | 8 | 8 | 62.5% | 0 |
| February 2025 | 7 | 7 | 42.9% | 0 |
| March 2025 | 17 | 17 | 100.0% | 0 |
| April 2025 | 4 | 4 | 75.0% | 0 |
| June 2025 | 18 | 18 | 66.7% | 0 |
| July 2025 | 24 | 24 | 62.5% | 0 |
| August 2025 | 2 | 1 | 100.0% | 1 |
| November 2025 | 3 | 3 | 66.7% | 0 |
| December 2025 | 2 | 2 | 0.0% | 0 |
| January 2026 | 6 | 6 | 83.3% | 0 |
| February 2026 | 15 | 15 | 73.3% | 0 |
| March 2026 | 28 | 28 | 92.9% | 0 |
| April 2026 | 20 | 20 | 45.0% | 0 |
| May 2026 | 18 | 18 | 22.2% | 0 |
| June 2026 | 21 | 21 | 90.5% | 0 |
| July 2026 | 23 | 22 | 95.5% | 1 |