WN1178
WN1178 (Southwest Airlines) is a multi-stop service on 23 routes, busiest Philadelphia to St Louis. Of 700 departures recorded from October 2024 to July 2026, 79.9% left on time, according to the US BTS.
- On-time departures79.9%of 700 flights
- Average delay13.3 min
- July 202630▼ 44.4%vs July 2025
- Cancelled1.3%
- Legs flown under this number23
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 | 28 | 31 | ▲ 10.7% |
| February | 26 | 25 | ▼ 3.8% |
| March | 31 | 47 | ▲ 51.6% |
| April | 30 | 34 | ▲ 13.3% |
| May | 31 | 31 | 0.0% |
| June | 54 | 30 | ▼ 44.4% |
| July | 54 | 30 | ▼ 44.4% |
| August | 31 | – | – |
| September | 26 | – | – |
| October | 27 | – | in progress |
| November | 29 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 254 | 228 | ▼ 10.2% |
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 | 96.2% | 89.7% | ▼ 6.7% |
| February | 88.5% | 100.0% | ▲ 13.0% |
| March | 90.3% | 76.1% | ▼ 15.8% |
| April | 96.7% | 82.4% | ▼ 14.8% |
| May | 100.0% | 96.8% | ▼ 3.2% |
| June | 35.2% | 83.3% | ▲ 136.8% |
| July | 55.8% | 67.9% | ▲ 21.7% |
| August | 25.8% | – | – |
| September | 69.2% | – | – |
| October | 85.2% | – | in progress |
| November | 100.0% | – | – |
| December | 93.6% | – | – |
| Year-to-date average (Jan–Jul) | 80.4% | 85.2% | ▲ 6.0% |
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 | 2 | 2 | 0.0% |
| February | 0 | 0 | – |
| March | 0 | 1 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 2 | 2 | 0.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 4 | 5 | ▲ 25.0% |
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 98.7% 691
- Cancelled 1.3% 9
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 | 13 | 13 | 92.3% | 0 |
| November 2024 | 29 | 29 | 100.0% | 0 |
| December 2024 | 32 | 32 | 100.0% | 0 |
| January 2025 | 28 | 26 | 96.2% | 2 |
| February 2025 | 26 | 26 | 88.5% | 0 |
| March 2025 | 31 | 31 | 90.3% | 0 |
| April 2025 | 30 | 30 | 96.7% | 0 |
| May 2025 | 31 | 31 | 100.0% | 0 |
| June 2025 | 54 | 54 | 35.2% | 0 |
| July 2025 | 54 | 52 | 55.8% | 2 |
| August 2025 | 31 | 31 | 25.8% | 0 |
| September 2025 | 26 | 26 | 69.2% | 0 |
| October 2025 | 27 | 27 | 85.2% | 0 |
| November 2025 | 29 | 29 | 100.0% | 0 |
| December 2025 | 31 | 31 | 93.6% | 0 |
| January 2026 | 31 | 29 | 89.7% | 2 |
| February 2026 | 25 | 25 | 100.0% | 0 |
| March 2026 | 47 | 46 | 76.1% | 1 |
| April 2026 | 34 | 34 | 82.4% | 0 |
| May 2026 | 31 | 31 | 96.8% | 0 |
| June 2026 | 30 | 30 | 83.3% | 0 |
| July 2026 | 30 | 28 | 67.9% | 2 |