WN1280
WN1280 (Southwest Airlines) is a multi-stop service on 32 routes, busiest Denver to Nashville. Of 616 departures recorded from October 2024 to July 2026, 80.9% left on time, according to the US BTS.
- On-time departures80.9%of 616 flights
- Average delay12.0 min
- July 202630▲ 0.0%vs July 2025
- Cancelled0.5%
- Legs flown under this number32
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 | 27 | 27 | 0.0% |
| February | 20 | 24 | ▲ 20.0% |
| March | 18 | 31 | ▲ 72.2% |
| April | 40 | 30 | ▼ 25.0% |
| May | 43 | 31 | ▼ 27.9% |
| June | 33 | 30 | ▼ 9.1% |
| July | 30 | 30 | 0.0% |
| August | 31 | – | – |
| September | 30 | – | – |
| October | 27 | – | in progress |
| November | 32 | – | – |
| December | 33 | – | – |
| Year to date (Jan–Jul) | 211 | 203 | ▼ 3.8% |
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 | 88.9% | 69.2% | ▼ 22.1% |
| February | 95.0% | 50.0% | ▼ 47.4% |
| March | 64.7% | 61.3% | ▼ 5.3% |
| April | 85.0% | 53.3% | ▼ 37.3% |
| May | 86.1% | 54.8% | ▼ 36.3% |
| June | 93.9% | 90.0% | ▼ 4.2% |
| July | 89.7% | 83.3% | ▼ 7.1% |
| August | 93.6% | – | – |
| September | 93.3% | – | – |
| October | 85.2% | – | in progress |
| November | 100.0% | – | – |
| December | 93.9% | – | – |
| Year-to-date average (Jan–Jul) | 86.2% | 66.0% | ▼ 23.4% |
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 | 0 | 1 | – |
| February | 0 | 0 | – |
| March | 1 | 0 | ▼ 100.0% |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 1 | 0 | ▼ 100.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 2 | 1 | ▼ 50.0% |
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 99.5% 613
- Cancelled 0.5% 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 BNA Denver International Airport – Nashville International Airport | 1,628 | 1.1 min | 93.2% | 60 |
| MDW BOS Chicago Midway International Airport – Boston Logan International Airport | 1,381 | 32.2 min | 53.5% | 58 |
| BWI PHX Baltimore/Washington International Thurgood Marshall Airport – Phoenix Sky Harbor International Airport | 3,209 | 2.0 min | 93.1% | 58 |
| DAL BWI Dallas Love Field – Baltimore/Washington International Thurgood Marshall Airport | 1,942 | 5.2 min | 95.9% | 49 |
| HOU SAT William P. Hobby Airport – San Antonio International Airport | 309 | -3.5 min | 97.8% | 46 |
| ONT SJC Ontario International Airport – Mineta San Jose International Airport | 536 | 4.4 min | 88.1% | 42 |
| BNA DEN Nashville International Airport – Denver International Airport | 1,628 | 27.4 min | 51.2% | 42 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 17 | 17 | 82.4% | 0 |
| November 2024 | 14 | 14 | 85.7% | 0 |
| December 2024 | 18 | 18 | 61.1% | 0 |
| January 2025 | 27 | 27 | 88.9% | 0 |
| February 2025 | 20 | 20 | 95.0% | 0 |
| March 2025 | 18 | 17 | 64.7% | 1 |
| April 2025 | 40 | 40 | 85.0% | 0 |
| May 2025 | 43 | 43 | 86.1% | 0 |
| June 2025 | 33 | 33 | 93.9% | 0 |
| July 2025 | 30 | 29 | 89.7% | 1 |
| August 2025 | 31 | 31 | 93.6% | 0 |
| September 2025 | 30 | 30 | 93.3% | 0 |
| October 2025 | 27 | 27 | 85.2% | 0 |
| November 2025 | 32 | 32 | 100.0% | 0 |
| December 2025 | 33 | 33 | 93.9% | 0 |
| January 2026 | 27 | 26 | 69.2% | 1 |
| February 2026 | 24 | 24 | 50.0% | 0 |
| March 2026 | 31 | 31 | 61.3% | 0 |
| April 2026 | 30 | 30 | 53.3% | 0 |
| May 2026 | 31 | 31 | 54.8% | 0 |
| June 2026 | 30 | 30 | 90.0% | 0 |
| July 2026 | 30 | 30 | 83.3% | 0 |