WN4839
WN4839 (Southwest Airlines) is a multi-stop service on 8 routes, busiest Denver to Dallas. Of 165 departures recorded from October 2024 to July 2026, 72.2% left on time, according to the US BTS.
- On-time departures72.2%of 165 flights
- Average delay16.5 min
- July 202625▲ 525.0%vs July 2025
- Cancelled1.8%
- Legs flown under this number8
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods12 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 11 | 3 | ▼ 72.7% |
| February | 19 | 1 | ▼ 94.7% |
| March | 3 | – | – |
| April | – | – | – |
| May | – | – | – |
| June | 4 | 24 | ▲ 500.0% |
| July | 4 | 25 | ▲ 525.0% |
| August | 1 | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 4 | – | – |
| December | 11 | – | – |
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 periods12 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 100.0% | 100.0% | 0.0% |
| February | 94.7% | 0.0% | ▼ 100.0% |
| March | 100.0% | – | – |
| April | – | – | – |
| May | – | – | – |
| June | 66.7% | 30.4% | ▼ 54.4% |
| July | 50.0% | 37.5% | ▼ 25.0% |
| August | 100.0% | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 75.0% | – | – |
| December | 81.8% | – | – |
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 periods12 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | 0 | 0 | – |
| March | 0 | – | – |
| April | – | – | – |
| May | – | – | – |
| June | 1 | 1 | 0.0% |
| July | 0 | 1 | – |
| August | 0 | – | – |
| 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 98.2% 162
- Cancelled 1.8% 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
2| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| DEN DAL Denver International Airport – Dallas Love Field | 1,048 | 3.1 min | 94.8% | 77 |
| SAN ABQ San Diego International Airport – Albuquerque International Sunport | 1,009 | 38.9 min | 38.5% | 41 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 10 | 10 | 70.0% | 0 |
| November 2024 | 25 | 25 | 92.0% | 0 |
| December 2024 | 20 | 20 | 95.0% | 0 |
| January 2025 | 11 | 11 | 100.0% | 0 |
| February 2025 | 19 | 19 | 94.7% | 0 |
| March 2025 | 3 | 3 | 100.0% | 0 |
| June 2025 | 4 | 3 | 66.7% | 1 |
| July 2025 | 4 | 4 | 50.0% | 0 |
| August 2025 | 1 | 1 | 100.0% | 0 |
| November 2025 | 4 | 4 | 75.0% | 0 |
| December 2025 | 11 | 11 | 81.8% | 0 |
| January 2026 | 3 | 3 | 100.0% | 0 |
| February 2026 | 1 | 1 | 0.0% | 0 |
| June 2026 | 24 | 23 | 30.4% | 1 |
| July 2026 | 25 | 24 | 37.5% | 1 |