WN1545
WN1545 (Southwest Airlines) is a multi-stop service on 33 routes, busiest Austin to Nashville. Of 682 departures recorded from October 2024 to July 2026, 66.4% left on time, according to the US BTS.
- On-time departures66.4%of 682 flights
- Average delay18.4 min
- July 202628▼ 15.2%vs July 2025
- Cancelled1.0%
- Legs flown under this number33
according to the US BTS · Oct 13, 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 | 31 | 33 | ▲ 6.5% |
| February | 26 | 28 | ▲ 7.7% |
| March | 60 | 35 | ▼ 41.7% |
| April | 38 | 28 | ▼ 26.3% |
| May | 31 | 26 | ▼ 16.1% |
| June | 36 | 26 | ▼ 27.8% |
| July | 33 | 28 | ▼ 15.2% |
| August | 29 | – | – |
| September | 25 | – | – |
| October | 31 | – | in progress |
| November | 37 | – | – |
| December | 23 | – | – |
| Year to date (Jan–Jul) | 255 | 204 | ▼ 20.0% |
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% | 66.7% | ▼ 23.1% |
| February | 88.0% | 75.0% | ▼ 14.8% |
| March | 85.0% | 88.6% | ▲ 4.2% |
| April | 71.1% | 64.3% | ▼ 9.5% |
| May | 22.6% | 42.3% | ▲ 87.4% |
| June | 52.8% | 11.5% | ▼ 78.1% |
| July | 64.5% | 33.3% | ▼ 48.3% |
| August | 42.9% | – | – |
| September | 52.0% | – | – |
| October | 87.1% | – | in progress |
| November | 78.4% | – | – |
| December | 59.1% | – | – |
| Year-to-date average (Jan–Jul) | 67.2% | 54.5% | ▼ 18.9% |
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 | 1 | 0 | ▼ 100.0% |
| February | 1 | 0 | ▼ 100.0% |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 2 | 1 | ▼ 50.0% |
| August | 1 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 1 | – | – |
| Year to date (Jan–Jul) | 4 | 1 | ▼ 75.0% |
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 99.0% 675
- Cancelled 1.0% 7
Share of all recorded flights in the period, all legs. · Oct 13, 2024 → Jul 31, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
88 of 8
| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| AUS BNA Austin Bergstrom International Airport – Nashville International Airport | 1,215 | 3.9 min | 88.9% | 82 |
| HOU SJC William P. Hobby Airport – Mineta San Jose International Airport | 2,605 | 10.4 min | 72.4% | 58 |
| DEN ORD Denver International Airport – Chicago O'Hare International Airport | 1,426 | 56.1 min | 34.5% | 58 |
| IND DEN Indianapolis International Airport – Denver International Airport | 1,568 | 24.0 min | 50.0% | 50 |
| DEN HOU Denver International Airport – William P. Hobby Airport | 1,422 | 53.2 min | 18.4% | 50 |
| DEN OKC Denver International Airport – OKC Will Rogers World Airport | 796 | 29.9 min | 45.8% | 49 |
| PHX CMH Phoenix Sky Harbor International Airport – John Glenn Columbus International Airport | 2,682 | 15.4 min | 61.4% | 44 |
| RNO DEN Reno Tahoe International Airport – Denver International Airport | 1,291 | 16.2 min | 65.7% | 36 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 18 | 18 | 100.0% | 0 |
| November 2024 | 30 | 30 | 83.3% | 0 |
| December 2024 | 30 | 30 | 80.0% | 0 |
| January 2025 | 31 | 30 | 86.7% | 1 |
| February 2025 | 26 | 25 | 88.0% | 1 |
| March 2025 | 60 | 60 | 85.0% | 0 |
| April 2025 | 38 | 38 | 71.1% | 0 |
| May 2025 | 31 | 31 | 22.6% | 0 |
| June 2025 | 36 | 36 | 52.8% | 0 |
| July 2025 | 33 | 31 | 64.5% | 2 |
| August 2025 | 29 | 28 | 42.9% | 1 |
| September 2025 | 25 | 25 | 52.0% | 0 |
| October 2025 | 31 | 31 | 87.1% | 0 |
| November 2025 | 37 | 37 | 78.4% | 0 |
| December 2025 | 23 | 22 | 59.1% | 1 |
| January 2026 | 33 | 33 | 66.7% | 0 |
| February 2026 | 28 | 28 | 75.0% | 0 |
| March 2026 | 35 | 35 | 88.6% | 0 |
| April 2026 | 28 | 28 | 64.3% | 0 |
| May 2026 | 26 | 26 | 42.3% | 0 |
| June 2026 | 26 | 26 | 11.5% | 0 |
| July 2026 | 28 | 27 | 33.3% | 1 |