WN3985
WN3985 (Southwest Airlines) is a multi-stop service on 17 routes, busiest Denver to Dallas. Of 495 departures recorded from October 2024 to July 2026, 75.8% left on time, according to the US BTS.
- On-time departures75.8%of 495 flights
- Average delay15.8 min
- July 202630▼ 26.8%vs July 2025
- Cancelled0.6%
- Legs flown under this number17
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods17 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 30 | 6 | ▼ 80.0% |
| February | 28 | – | – |
| March | 5 | 5 | 0.0% |
| April | 23 | 28 | ▲ 21.7% |
| May | 31 | 36 | ▲ 16.1% |
| June | 36 | 30 | ▼ 16.7% |
| July | 41 | 30 | ▼ 26.8% |
| August | 4 | – | – |
| September | – | – | – |
| October | 29 | – | in progress |
| November | 29 | – | – |
| December | 35 | – | – |
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 periods17 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 75.9% | 66.7% | ▼ 12.1% |
| February | 71.4% | – | – |
| March | 60.0% | 80.0% | ▲ 33.3% |
| April | 60.9% | 96.4% | ▲ 58.4% |
| May | 54.8% | 88.9% | ▲ 62.1% |
| June | 72.2% | 93.3% | ▲ 29.2% |
| July | 80.5% | 93.3% | ▲ 16.0% |
| August | 50.0% | – | – |
| September | – | – | – |
| October | 71.4% | – | in progress |
| November | 86.2% | – | – |
| December | 60.0% | – | – |
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 periods17 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 1 | 0 | ▼ 100.0% |
| February | 0 | – | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | – | – | – |
| October | 1 | – | 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 99.4% 492
- Cancelled 0.6% 3
Share of all recorded flights in the period, all legs. · Oct 14, 2024 → Jul 31, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
7| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| DEN DAL Denver International Airport – Dallas Love Field | 1,048 | 18.0 min | 70.4% | 117 |
| STL TPA St. Louis Lambert International Airport – Tampa International Airport | 1,400 | -1.9 min | 94.7% | 57 |
| RDU BWI Raleigh-Durham International Airport – Baltimore/Washington International Thurgood Marshall Airport | 411 | -0.6 min | 93.0% | 57 |
| DEN STL Denver International Airport – St. Louis Lambert International Airport | 1,236 | 48.2 min | 52.6% | 57 |
| ONT OAK Ontario International Airport – Oakland San Francisco Bay Airport | 582 | 15.1 min | 78.6% | 56 |
| MKE PHX General Mitchell International Airport – Phoenix Sky Harbor International Airport | 2,346 | 8.7 min | 82.7% | 52 |
| OAK BUR Oakland San Francisco Bay Airport – Hollywood Burbank/Bob Hope Airport | 523 | 29.2 min | 69.0% | 30 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 14 | 14 | 71.4% | 0 |
| November 2024 | 26 | 25 | 72.0% | 1 |
| December 2024 | 29 | 29 | 65.5% | 0 |
| January 2025 | 30 | 29 | 75.9% | 1 |
| February 2025 | 28 | 28 | 71.4% | 0 |
| March 2025 | 5 | 5 | 60.0% | 0 |
| April 2025 | 23 | 23 | 60.9% | 0 |
| May 2025 | 31 | 31 | 54.8% | 0 |
| June 2025 | 36 | 36 | 72.2% | 0 |
| July 2025 | 41 | 41 | 80.5% | 0 |
| August 2025 | 4 | 4 | 50.0% | 0 |
| October 2025 | 29 | 28 | 71.4% | 1 |
| November 2025 | 29 | 29 | 86.2% | 0 |
| December 2025 | 35 | 35 | 60.0% | 0 |
| January 2026 | 6 | 6 | 66.7% | 0 |
| March 2026 | 5 | 5 | 80.0% | 0 |
| April 2026 | 28 | 28 | 96.4% | 0 |
| May 2026 | 36 | 36 | 88.9% | 0 |
| June 2026 | 30 | 30 | 93.3% | 0 |
| July 2026 | 30 | 30 | 93.3% | 0 |