WN1143
WN1143 (Southwest Airlines) is a multi-stop service on 26 routes, busiest Washington to Tampa. Of 700 departures recorded from October 2024 to July 2026, 79.8% left on time, according to the US BTS.
- On-time departures79.8%of 700 flights
- Average delay10.2 min
- July 202645▲ 95.7%vs July 2025
- Cancelled0.9%
- Legs flown under this number26
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 | 31 | 0.0% |
| February | 28 | 28 | 0.0% |
| March | 31 | 31 | 0.0% |
| April | 30 | 30 | 0.0% |
| May | 31 | 30 | ▼ 3.2% |
| June | 22 | 42 | ▲ 90.9% |
| July | 23 | 45 | ▲ 95.7% |
| August | 36 | – | – |
| September | 39 | – | – |
| October | 53 | – | in progress |
| November | 29 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 196 | 237 | ▲ 20.9% |
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 | 87.1% | 93.3% | ▲ 7.2% |
| February | 82.1% | 89.3% | ▲ 8.7% |
| March | 64.5% | 76.7% | ▲ 18.8% |
| April | 73.3% | 76.7% | ▲ 4.6% |
| May | 90.3% | 70.0% | ▼ 22.5% |
| June | 45.5% | 71.4% | ▲ 57.2% |
| July | 77.3% | 69.8% | ▼ 9.7% |
| August | 94.3% | – | – |
| September | 92.3% | – | – |
| October | 84.9% | – | in progress |
| November | 82.8% | – | – |
| December | 77.4% | – | – |
| Year-to-date average (Jan–Jul) | 74.3% | 78.2% | ▲ 5.2% |
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 | 0 | 0 | – |
| March | 0 | 1 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 1 | 2 | ▲ 100.0% |
| August | 1 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 1 | 4 | ▲ 300.0% |
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 99.1% 694
- Cancelled 0.9% 6
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
10Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 19 | 19 | 100.0% | 0 |
| November 2024 | 29 | 29 | 82.8% | 0 |
| December 2024 | 31 | 31 | 71.0% | 0 |
| January 2025 | 31 | 31 | 87.1% | 0 |
| February 2025 | 28 | 28 | 82.1% | 0 |
| March 2025 | 31 | 31 | 64.5% | 0 |
| April 2025 | 30 | 30 | 73.3% | 0 |
| May 2025 | 31 | 31 | 90.3% | 0 |
| June 2025 | 22 | 22 | 45.5% | 0 |
| July 2025 | 23 | 22 | 77.3% | 1 |
| August 2025 | 36 | 35 | 94.3% | 1 |
| September 2025 | 39 | 39 | 92.3% | 0 |
| October 2025 | 53 | 53 | 84.9% | 0 |
| November 2025 | 29 | 29 | 82.8% | 0 |
| December 2025 | 31 | 31 | 77.4% | 0 |
| January 2026 | 31 | 30 | 93.3% | 1 |
| February 2026 | 28 | 28 | 89.3% | 0 |
| March 2026 | 31 | 30 | 76.7% | 1 |
| April 2026 | 30 | 30 | 76.7% | 0 |
| May 2026 | 30 | 30 | 70.0% | 0 |
| June 2026 | 42 | 42 | 71.4% | 0 |
| July 2026 | 45 | 43 | 69.8% | 2 |