WN528
WN528 (Southwest Airlines) is a multi-stop service on 33 routes, busiest Austin to Dallas. Of 668 departures recorded from October 2024 to July 2026, 76.9% left on time, according to the US BTS.
- On-time departures76.9%of 668 flights
- Average delay11.7 min
- July 202628▼ 9.7%vs July 2025
- Cancelled1.5%
- Legs flown under this number33
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 | 46 | 30 | ▼ 34.8% |
| February | 33 | 28 | ▼ 15.2% |
| March | 38 | 31 | ▼ 18.4% |
| April | 32 | 6 | ▼ 81.3% |
| May | 31 | 1 | ▼ 96.8% |
| June | 30 | 23 | ▼ 23.3% |
| July | 31 | 28 | ▼ 9.7% |
| August | 52 | – | – |
| September | 56 | – | – |
| October | 27 | – | in progress |
| November | 27 | – | – |
| December | 29 | – | – |
| Year to date (Jan–Jul) | 241 | 147 | ▼ 39.0% |
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 | 91.3% | 93.1% | ▲ 2.0% |
| February | 83.9% | 82.1% | ▼ 2.1% |
| March | 94.6% | 55.2% | ▼ 41.7% |
| April | 90.6% | 83.3% | ▼ 8.1% |
| May | 100.0% | 100.0% | 0.0% |
| June | 62.1% | 82.6% | ▲ 33.1% |
| July | 70.0% | 92.9% | ▲ 32.7% |
| August | 59.6% | – | – |
| September | 78.2% | – | – |
| October | 25.9% | – | in progress |
| November | 77.8% | – | – |
| December | 41.4% | – | – |
| Year-to-date average (Jan–Jul) | 84.6% | 84.2% | ▼ 0.5% |
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 | 2 | 0 | ▼ 100.0% |
| March | 1 | 2 | ▲ 100.0% |
| April | 0 | 0 | – |
| May | 1 | 0 | ▼ 100.0% |
| June | 1 | 0 | ▼ 100.0% |
| July | 1 | 0 | ▼ 100.0% |
| August | 0 | – | – |
| September | 1 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 6 | 3 | ▼ 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 98.5% 658
- Cancelled 1.5% 10
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 |
|---|---|---|---|---|
| AUS DAL Austin Bergstrom International Airport – Dallas Love Field | 304 | 20.9 min | 64.4% | 61 |
| SAN RNO San Diego International Airport – Reno Tahoe International Airport | 787 | 0.3 min | 87.7% | 59 |
| DEN MSP Denver International Airport – Minneapolis–Saint Paul International Airport / Wold–Chamberlain Field | 1,092 | 20.4 min | 61.0% | 59 |
| RDU BNA Raleigh-Durham International Airport – Nashville International Airport | 710 | -2.8 min | 100.0% | 58 |
| MDW PHX Chicago Midway International Airport – Phoenix Sky Harbor International Airport | 2,319 | 22.3 min | 68.5% | 55 |
| MCI RSW Kansas City International Airport – Southwest Florida International Airport | 1,861 | 23.5 min | 61.3% | 33 |
| SFO BNA San Francisco International Airport – Nashville International Airport | 3,161 | 11.8 min | 72.4% | 30 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 14 | 14 | 92.9% | 0 |
| November 2024 | 41 | 41 | 87.8% | 0 |
| December 2024 | 34 | 34 | 73.5% | 0 |
| January 2025 | 46 | 46 | 91.3% | 0 |
| February 2025 | 33 | 31 | 83.9% | 2 |
| March 2025 | 38 | 37 | 94.6% | 1 |
| April 2025 | 32 | 32 | 90.6% | 0 |
| May 2025 | 31 | 30 | 100.0% | 1 |
| June 2025 | 30 | 29 | 62.1% | 1 |
| July 2025 | 31 | 30 | 70.0% | 1 |
| August 2025 | 52 | 52 | 59.6% | 0 |
| September 2025 | 56 | 55 | 78.2% | 1 |
| October 2025 | 27 | 27 | 25.9% | 0 |
| November 2025 | 27 | 27 | 77.8% | 0 |
| December 2025 | 29 | 29 | 41.4% | 0 |
| January 2026 | 30 | 29 | 93.1% | 1 |
| February 2026 | 28 | 28 | 82.1% | 0 |
| March 2026 | 31 | 29 | 55.2% | 2 |
| April 2026 | 6 | 6 | 83.3% | 0 |
| May 2026 | 1 | 1 | 100.0% | 0 |
| June 2026 | 23 | 23 | 82.6% | 0 |
| July 2026 | 28 | 28 | 92.9% | 0 |