WN4598
WN4598 (Southwest Airlines) is a multi-stop service on 19 routes, busiest Los Angeles to Denver. Of 330 departures recorded from October 2024 to July 2026, 78.5% left on time, according to the US BTS.
- On-time departures78.5%of 330 flights
- Average delay13.8 min
- July 202631▲ 3,000.0%vs July 2025
- Cancelled0.0%
- Legs flown under this number19
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods15 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 9 | 18 | ▲ 100.0% |
| February | 15 | 23 | ▲ 53.3% |
| March | 22 | 24 | ▲ 9.1% |
| April | 5 | 25 | ▲ 400.0% |
| May | – | 25 | – |
| June | – | 30 | – |
| July | 1 | 31 | ▲ 3,000.0% |
| August | – | – | – |
| September | – | – | – |
| October | 18 | – | in progress |
| November | 4 | – | – |
| 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 periods15 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 66.7% | 83.3% | ▲ 25.0% |
| February | 93.3% | 78.3% | ▼ 16.1% |
| March | 59.1% | 95.8% | ▲ 62.2% |
| April | 60.0% | 76.0% | ▲ 26.7% |
| May | – | 76.0% | – |
| June | – | 90.0% | – |
| July | 100.0% | 100.0% | 0.0% |
| August | – | – | – |
| September | – | – | – |
| October | 38.9% | – | in progress |
| November | 75.0% | – | – |
| 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 periods15 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 | – |
| July | 0 | 0 | – |
| August | – | – | – |
| September | – | – | – |
| October | 0 | – | 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 100.0% 330
- 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
4| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| LAX DEN Los Angeles International Airport – Denver International Airport | 1,385 | 12.8 min | 81.2% | 69 |
| MKE BNA General Mitchell International Airport – Nashville International Airport | 766 | -2.1 min | 96.5% | 57 |
| TUS DEN Tucson International Airport – Denver International Airport | 1,029 | 12.5 min | 73.8% | 42 |
| MSY DAL Louis Armstrong New Orleans International Airport – Dallas Love Field | 700 | 7.1 min | 86.1% | 36 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 32 | 32 | 71.9% | 0 |
| November 2024 | 25 | 25 | 76.0% | 0 |
| December 2024 | 21 | 21 | 85.7% | 0 |
| January 2025 | 9 | 9 | 66.7% | 0 |
| February 2025 | 15 | 15 | 93.3% | 0 |
| March 2025 | 22 | 22 | 59.1% | 0 |
| April 2025 | 5 | 5 | 60.0% | 0 |
| July 2025 | 1 | 1 | 100.0% | 0 |
| October 2025 | 18 | 18 | 38.9% | 0 |
| November 2025 | 4 | 4 | 75.0% | 0 |
| December 2025 | 2 | 2 | 0.0% | 0 |
| January 2026 | 18 | 18 | 83.3% | 0 |
| February 2026 | 23 | 23 | 78.3% | 0 |
| March 2026 | 24 | 24 | 95.8% | 0 |
| April 2026 | 25 | 25 | 76.0% | 0 |
| May 2026 | 25 | 25 | 76.0% | 0 |
| June 2026 | 30 | 30 | 90.0% | 0 |
| July 2026 | 31 | 31 | 100.0% | 0 |