WN527
WN527 (Southwest Airlines) is a multi-stop service on 32 routes, busiest Nashville to Philadelphia. Of 631 departures recorded from October 2024 to July 2026, 80.9% left on time, according to the US BTS.
- On-time departures80.9%of 631 flights
- Average delay8.9 min
- July 202635▲ 0.0%vs July 2025
- Cancelled0.6%
- 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 | 29 | 30 | ▲ 3.4% |
| February | 26 | 28 | ▲ 7.7% |
| March | 31 | 31 | 0.0% |
| April | 36 | 6 | ▼ 83.3% |
| May | 41 | 1 | ▼ 97.6% |
| June | 34 | 31 | ▼ 8.8% |
| July | 35 | 35 | 0.0% |
| August | 32 | – | – |
| September | 30 | – | – |
| October | 37 | – | in progress |
| November | 26 | – | – |
| December | 27 | – | – |
| Year to date (Jan–Jul) | 232 | 162 | ▼ 30.2% |
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 | 82.8% | 86.7% | ▲ 4.7% |
| February | 92.3% | 78.6% | ▼ 14.9% |
| March | 70.0% | 64.5% | ▼ 7.8% |
| April | 75.0% | 100.0% | ▲ 33.3% |
| May | 87.8% | 100.0% | ▲ 13.9% |
| June | 97.1% | 41.9% | ▼ 56.8% |
| July | 94.1% | 71.4% | ▼ 24.1% |
| August | 81.3% | – | – |
| September | 86.2% | – | – |
| October | 67.6% | – | in progress |
| November | 96.0% | – | – |
| December | 96.3% | – | – |
| Year-to-date average (Jan–Jul) | 85.6% | 77.6% | ▼ 9.3% |
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 | 0 | – |
| 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 | 1 | – | – |
| October | 0 | – | in progress |
| November | 1 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 2 | 0 | ▼ 100.0% |
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% 627
- 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
9Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 100.0% | 0 |
| November 2024 | 32 | 32 | 90.6% | 0 |
| December 2024 | 33 | 33 | 66.7% | 0 |
| January 2025 | 29 | 29 | 82.8% | 0 |
| February 2025 | 26 | 26 | 92.3% | 0 |
| March 2025 | 31 | 30 | 70.0% | 1 |
| April 2025 | 36 | 36 | 75.0% | 0 |
| May 2025 | 41 | 41 | 87.8% | 0 |
| June 2025 | 34 | 34 | 97.1% | 0 |
| July 2025 | 35 | 34 | 94.1% | 1 |
| August 2025 | 32 | 32 | 81.3% | 0 |
| September 2025 | 30 | 29 | 86.2% | 1 |
| October 2025 | 37 | 37 | 67.6% | 0 |
| November 2025 | 26 | 25 | 96.0% | 1 |
| December 2025 | 27 | 27 | 96.3% | 0 |
| January 2026 | 30 | 30 | 86.7% | 0 |
| February 2026 | 28 | 28 | 78.6% | 0 |
| March 2026 | 31 | 31 | 64.5% | 0 |
| April 2026 | 6 | 6 | 100.0% | 0 |
| May 2026 | 1 | 1 | 100.0% | 0 |
| June 2026 | 31 | 31 | 41.9% | 0 |
| July 2026 | 35 | 35 | 71.4% | 0 |