WN3512
WN3512 (Southwest Airlines) is a multi-stop service on 23 routes, busiest Denver to Salt Lake City. Of 471 departures recorded from October 2024 to July 2026, 68.8% left on time, according to the US BTS.
- On-time departures68.8%of 471 flights
- Average delay16.1 min
- July 202615▲ 66.7%vs July 2025
- Cancelled0.6%
- Legs flown under this number23
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 | 25 | 13 | ▼ 48.0% |
| February | 21 | 19 | ▼ 9.5% |
| March | 30 | 36 | ▲ 20.0% |
| April | 22 | 31 | ▲ 40.9% |
| May | 23 | 31 | ▲ 34.8% |
| June | 10 | 15 | ▲ 50.0% |
| July | 9 | 15 | ▲ 66.7% |
| August | 8 | – | – |
| September | 4 | – | – |
| October | 30 | – | in progress |
| November | 27 | – | – |
| December | 29 | – | – |
| Year to date (Jan–Jul) | 140 | 160 | ▲ 14.3% |
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 | 62.5% | 84.6% | ▲ 35.4% |
| February | 52.4% | 73.7% | ▲ 40.7% |
| March | 83.3% | 75.0% | ▼ 10.0% |
| April | 72.7% | 51.6% | ▼ 29.0% |
| May | 68.2% | 35.5% | ▼ 48.0% |
| June | 80.0% | 40.0% | ▼ 50.0% |
| July | 66.7% | 60.0% | ▼ 10.0% |
| August | 87.5% | – | – |
| September | 100.0% | – | – |
| October | 80.0% | – | in progress |
| November | 59.3% | – | – |
| December | 58.6% | – | – |
| Year-to-date average (Jan–Jul) | 69.4% | 60.1% | ▼ 13.5% |
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 | 1 | 0 | ▼ 100.0% |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 1 | 0 | ▼ 100.0% |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 2 | 0 | ▼ 100.0% |
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% 468
- Cancelled 0.6% 3
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
7| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| DEN SLC Denver International Airport – Salt Lake City International Airport | 628 | 10.5 min | 77.5% | 91 |
| MSY SAN Louis Armstrong New Orleans International Airport – San Diego International Airport | 2,568 | 31.3 min | 36.2% | 58 |
| DEN HOU Denver International Airport – William P. Hobby Airport | 1,422 | 19.1 min | 54.4% | 46 |
| HOU ABQ William P. Hobby Airport – Albuquerque International Sunport | 1,221 | 18.2 min | 66.7% | 40 |
| MCO RDU Orlando International Airport – Raleigh-Durham International Airport | 862 | 19.5 min | 84.9% | 33 |
| LAS DEN Harry Reid International Airport – Denver International Airport | 1,009 | 7.3 min | 80.7% | 31 |
| SJC BNA Mineta San Jose International Airport – Nashville International Airport | 3,126 | 9.0 min | 76.7% | 30 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 19 | 19 | 84.2% | 0 |
| November 2024 | 31 | 30 | 93.3% | 1 |
| December 2024 | 23 | 23 | 87.0% | 0 |
| January 2025 | 25 | 24 | 62.5% | 1 |
| February 2025 | 21 | 21 | 52.4% | 0 |
| March 2025 | 30 | 30 | 83.3% | 0 |
| April 2025 | 22 | 22 | 72.7% | 0 |
| May 2025 | 23 | 22 | 68.2% | 1 |
| June 2025 | 10 | 10 | 80.0% | 0 |
| July 2025 | 9 | 9 | 66.7% | 0 |
| August 2025 | 8 | 8 | 87.5% | 0 |
| September 2025 | 4 | 4 | 100.0% | 0 |
| October 2025 | 30 | 30 | 80.0% | 0 |
| November 2025 | 27 | 27 | 59.3% | 0 |
| December 2025 | 29 | 29 | 58.6% | 0 |
| January 2026 | 13 | 13 | 84.6% | 0 |
| February 2026 | 19 | 19 | 73.7% | 0 |
| March 2026 | 36 | 36 | 75.0% | 0 |
| April 2026 | 31 | 31 | 51.6% | 0 |
| May 2026 | 31 | 31 | 35.5% | 0 |
| June 2026 | 15 | 15 | 40.0% | 0 |
| July 2026 | 15 | 15 | 60.0% | 0 |