WN1566
WN1566 (Southwest Airlines) is a multi-stop service on 27 routes, busiest Denver to Phoenix. Of 586 departures recorded from October 2024 to July 2026, 75.3% left on time, according to the US BTS.
- On-time departures75.3%of 586 flights
- Average delay14.6 min
- July 202628▼ 6.7%vs July 2025
- Cancelled1.4%
- Legs flown under this number27
according to the US BTS · Oct 12, 2024 → Jul 31, 2026 domestic flights only
Recorded departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
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 | 15 | 30 | ▲ 100.0% |
| February | 19 | 24 | ▲ 26.3% |
| March | 19 | 35 | ▲ 84.2% |
| April | 27 | 25 | ▼ 7.4% |
| May | 31 | 22 | ▼ 29.0% |
| June | 29 | 26 | ▼ 10.3% |
| July | 30 | 28 | ▼ 6.7% |
| August | 26 | – | – |
| September | 26 | – | – |
| October | 13 | – | in progress |
| November | 27 | – | – |
| December | 29 | – | – |
| Year to date (Jan–Jul) | 170 | 190 | ▲ 11.8% |
according to the US BTS · October 2024 → July 2026
On-time departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
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 | 86.7% | 96.7% | ▲ 11.5% |
| February | 94.7% | 91.7% | ▼ 3.2% |
| March | 84.2% | 68.6% | ▼ 18.6% |
| April | 92.6% | 68.0% | ▼ 26.6% |
| May | 58.1% | 77.3% | ▲ 33.1% |
| June | 78.6% | 34.6% | ▼ 55.9% |
| July | 83.3% | 25.9% | ▼ 68.9% |
| August | 68.0% | – | – |
| September | 69.2% | – | – |
| October | 76.9% | – | in progress |
| November | 78.3% | – | – |
| December | 75.9% | – | – |
| Year-to-date average (Jan–Jul) | 82.6% | 66.1% | ▼ 20.0% |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
Partial coverage: domestic flights only · 22 of 22 periods have data
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
The most recent periods19 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 1 | 0 | ▼ 100.0% |
| July | 0 | 1 | – |
| August | 1 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 4 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 1 | 1 | 0.0% |
according to the US BTS · October 2024 → July 2026
This is not a forecast
This is a historical record of departures already flown, not a forecast for your flight.
This number flies several legs
Several legs: the headline figure averages all of them. See the leg table.
Cancellation share
- Not cancelled 98.6% 578
- Cancelled 1.4% 8
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
99 of 9
| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| DEN PHX Denver International Airport – Phoenix Sky Harbor International Airport | 968 | 15.5 min | 79.8% | 79 |
| DEN LAS Denver International Airport – Harry Reid International Airport | 1,009 | 55.3 min | 25.0% | 49 |
| BUR RNO Hollywood Burbank/Bob Hope Airport – Reno Tahoe International Airport | 602 | 19.9 min | 67.4% | 49 |
| LAS SJC Harry Reid International Airport – Mineta San Jose International Airport | 620 | 2.3 min | 93.6% | 47 |
| MIA BWI Miami International Airport – Baltimore/Washington International Thurgood Marshall Airport | 1,526 | 7.6 min | 78.6% | 46 |
| PHX SLC Phoenix Sky Harbor International Airport – Salt Lake City International Airport | 818 | 17.7 min | 69.1% | 42 |
| BUR SMF Hollywood Burbank/Bob Hope Airport – Sacramento International Airport | 577 | -3.0 min | 92.5% | 42 |
| DAL DCA Dallas Love Field – Ronald Reagan Washington National Airport | 1,902 | 19.5 min | 66.7% | 33 |
| BUR ABQ Hollywood Burbank/Bob Hope Airport – Albuquerque International Sunport | 1,079 | 4.2 min | 86.7% | 30 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 19 | 19 | 73.7% | 0 |
| November 2024 | 52 | 51 | 84.3% | 1 |
| December 2024 | 34 | 34 | 91.2% | 0 |
| January 2025 | 15 | 15 | 86.7% | 0 |
| February 2025 | 19 | 19 | 94.7% | 0 |
| March 2025 | 19 | 19 | 84.2% | 0 |
| April 2025 | 27 | 27 | 92.6% | 0 |
| May 2025 | 31 | 31 | 58.1% | 0 |
| June 2025 | 29 | 28 | 78.6% | 1 |
| July 2025 | 30 | 30 | 83.3% | 0 |
| August 2025 | 26 | 25 | 68.0% | 1 |
| September 2025 | 26 | 26 | 69.2% | 0 |
| October 2025 | 13 | 13 | 76.9% | 0 |
| November 2025 | 27 | 23 | 78.3% | 4 |
| December 2025 | 29 | 29 | 75.9% | 0 |
| January 2026 | 30 | 30 | 96.7% | 0 |
| February 2026 | 24 | 24 | 91.7% | 0 |
| March 2026 | 35 | 35 | 68.6% | 0 |
| April 2026 | 25 | 25 | 68.0% | 0 |
| May 2026 | 22 | 22 | 77.3% | 0 |
| June 2026 | 26 | 26 | 34.6% | 0 |
| July 2026 | 28 | 27 | 25.9% | 1 |