WN3019
WN3019 (Southwest Airlines) is a multi-stop service on 29 routes, busiest Denver to Boston. Of 540 departures recorded from October 2024 to July 2026, 69.5% left on time, according to the US BTS.
- On-time departures69.5%of 540 flights
- Average delay18.0 min
- July 20264▼ 84.6%vs July 2025
- Cancelled1.7%
- Legs flown under this number29
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 | 33 | ▲ 32.0% |
| February | 32 | 18 | ▼ 43.8% |
| March | 19 | 30 | ▲ 57.9% |
| April | 27 | 16 | ▼ 40.7% |
| May | 31 | 14 | ▼ 54.8% |
| June | 26 | 6 | ▼ 76.9% |
| July | 26 | 4 | ▼ 84.6% |
| August | 41 | – | – |
| September | 43 | – | – |
| October | 30 | – | in progress |
| November | 47 | – | – |
| December | 41 | – | – |
| Year to date (Jan–Jul) | 186 | 121 | ▼ 34.9% |
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 | 83.3% | 96.8% | ▲ 16.1% |
| February | 80.0% | 83.3% | ▲ 4.2% |
| March | 63.2% | 83.3% | ▲ 31.9% |
| April | 66.7% | 87.5% | ▲ 31.2% |
| May | 35.5% | 92.9% | ▲ 161.7% |
| June | 69.2% | 66.7% | ▼ 3.7% |
| July | 68.0% | 66.7% | ▼ 2.0% |
| August | 48.8% | – | – |
| September | 48.8% | – | – |
| October | 53.3% | – | in progress |
| November | 83.0% | – | – |
| December | 78.1% | – | – |
| Year-to-date average (Jan–Jul) | 66.6% | 82.4% | ▲ 23.9% |
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 | 2 | ▲ 100.0% |
| February | 2 | 0 | ▼ 100.0% |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 1 | 1 | 0.0% |
| August | 0 | – | – |
| September | 2 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 4 | 3 | ▼ 25.0% |
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 98.3% 531
- Cancelled 1.7% 9
Share of all recorded flights in the period, all legs. · Oct 13, 2024 → Jul 25, 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 BOS Denver International Airport – Boston Logan International Airport | 2,816 | 37.6 min | 51.7% | 58 |
| LAS COS Harry Reid International Airport – City of Colorado Springs Municipal Airport | 970 | 16.4 min | 59.2% | 50 |
| LAS OKC Harry Reid International Airport – OKC Will Rogers World Airport | 1,584 | 1.1 min | 91.1% | 47 |
| LGB PHX Long Beach International Airport – Phoenix Sky Harbor International Airport | 570 | 11.0 min | 77.8% | 45 |
| DEN BNA Denver International Airport – Nashville International Airport | 1,628 | 12.9 min | 81.8% | 33 |
| OAK LAS Oakland San Francisco Bay Airport – Harry Reid International Airport | 654 | 28.3 min | 35.5% | 32 |
| DAL DCA Dallas Love Field – Ronald Reagan Washington National Airport | 1,902 | 24.6 min | 53.3% | 30 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 11 | 11 | 81.8% | 0 |
| November 2024 | 8 | 8 | 75.0% | 0 |
| December 2024 | 12 | 12 | 33.3% | 0 |
| January 2025 | 25 | 24 | 83.3% | 1 |
| February 2025 | 32 | 30 | 80.0% | 2 |
| March 2025 | 19 | 19 | 63.2% | 0 |
| April 2025 | 27 | 27 | 66.7% | 0 |
| May 2025 | 31 | 31 | 35.5% | 0 |
| June 2025 | 26 | 26 | 69.2% | 0 |
| July 2025 | 26 | 25 | 68.0% | 1 |
| August 2025 | 41 | 41 | 48.8% | 0 |
| September 2025 | 43 | 41 | 48.8% | 2 |
| October 2025 | 30 | 30 | 53.3% | 0 |
| November 2025 | 47 | 47 | 83.0% | 0 |
| December 2025 | 41 | 41 | 78.1% | 0 |
| January 2026 | 33 | 31 | 96.8% | 2 |
| February 2026 | 18 | 18 | 83.3% | 0 |
| March 2026 | 30 | 30 | 83.3% | 0 |
| April 2026 | 16 | 16 | 87.5% | 0 |
| May 2026 | 14 | 14 | 92.9% | 0 |
| June 2026 | 6 | 6 | 66.7% | 0 |
| July 2026 | 4 | 3 | 66.7% | 1 |