WN550
WN550 (Southwest Airlines) is a multi-stop service on 42 routes, busiest Austin to Denver. Of 714 departures recorded from October 2024 to July 2026, 81.6% left on time, according to the US BTS.
- On-time departures81.6%of 714 flights
- Average delay8.4 min
- July 202646▲ 283.3%vs July 2025
- Cancelled0.6%
- Legs flown under this number42
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 | 31 | 30 | ▼ 3.2% |
| February | 40 | 28 | ▼ 30.0% |
| March | 31 | 38 | ▲ 22.6% |
| April | 41 | 37 | ▼ 9.8% |
| May | 47 | 37 | ▼ 21.3% |
| June | 18 | 48 | ▲ 166.7% |
| July | 12 | 46 | ▲ 283.3% |
| August | 26 | – | – |
| September | 26 | – | – |
| October | 31 | – | in progress |
| November | 28 | – | – |
| December | 26 | – | – |
| Year to date (Jan–Jul) | 220 | 264 | ▲ 20.0% |
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% | 85.7% | ▲ 2.9% |
| February | 87.5% | 89.3% | ▲ 2.0% |
| March | 80.7% | 70.3% | ▼ 12.9% |
| April | 82.9% | 64.9% | ▼ 21.8% |
| May | 91.5% | 67.6% | ▼ 26.1% |
| June | 94.4% | 70.8% | ▼ 25.0% |
| July | 100.0% | 82.6% | ▼ 17.4% |
| August | 96.2% | – | – |
| September | 92.3% | – | – |
| October | 96.8% | – | in progress |
| November | 82.1% | – | – |
| December | 65.4% | – | – |
| Year-to-date average (Jan–Jul) | 88.6% | 75.9% | ▼ 14.4% |
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 | 1 | 2 | ▲ 100.0% |
| February | 0 | 0 | – |
| March | 0 | 1 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 1 | 3 | ▲ 200.0% |
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% 710
- Cancelled 0.6% 4
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
6| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| AUS DEN Austin Bergstrom International Airport – Denver International Airport | 1,249 | 7.9 min | 84.0% | 106 |
| BNA MCI Nashville International Airport – Kansas City International Airport | 790 | 4.2 min | 87.5% | 58 |
| STL OMA St. Louis Lambert International Airport – Eppley Airfield | 549 | 1.3 min | 93.0% | 57 |
| HOU DEN William P. Hobby Airport – Denver International Airport | 1,422 | 9.3 min | 85.2% | 54 |
| BNA BWI Nashville International Airport – Baltimore/Washington International Thurgood Marshall Airport | 944 | 20.4 min | 66.0% | 47 |
| MCO BNA Orlando International Airport – Nashville International Airport | 993 | -0.5 min | 94.1% | 34 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 85.0% | 0 |
| November 2024 | 35 | 35 | 80.0% | 0 |
| December 2024 | 38 | 38 | 73.7% | 0 |
| January 2025 | 31 | 30 | 83.3% | 1 |
| February 2025 | 40 | 40 | 87.5% | 0 |
| March 2025 | 31 | 31 | 80.7% | 0 |
| April 2025 | 41 | 41 | 82.9% | 0 |
| May 2025 | 47 | 47 | 91.5% | 0 |
| June 2025 | 18 | 18 | 94.4% | 0 |
| July 2025 | 12 | 12 | 100.0% | 0 |
| August 2025 | 26 | 26 | 96.2% | 0 |
| September 2025 | 26 | 26 | 92.3% | 0 |
| October 2025 | 31 | 31 | 96.8% | 0 |
| November 2025 | 28 | 28 | 82.1% | 0 |
| December 2025 | 26 | 26 | 65.4% | 0 |
| January 2026 | 30 | 28 | 85.7% | 2 |
| February 2026 | 28 | 28 | 89.3% | 0 |
| March 2026 | 38 | 37 | 70.3% | 1 |
| April 2026 | 37 | 37 | 64.9% | 0 |
| May 2026 | 37 | 37 | 67.6% | 0 |
| June 2026 | 48 | 48 | 70.8% | 0 |
| July 2026 | 46 | 46 | 82.6% | 0 |