WN1840
WN1840 (Southwest Airlines) is a multi-stop service on 31 routes, busiest Pittsburgh to Nashville. Of 708 departures recorded from October 2024 to July 2026, 75.5% left on time, according to the US BTS.
- On-time departures75.5%of 708 flights
- Average delay12.2 min
- July 202641▲ 32.3%vs July 2025
- Cancelled0.7%
- Legs flown under this number31
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 | 32 | ▲ 3.2% |
| February | 27 | 42 | ▲ 55.6% |
| March | 31 | 29 | ▼ 6.5% |
| April | 27 | 32 | ▲ 18.5% |
| May | 27 | 36 | ▲ 33.3% |
| June | 29 | 39 | ▲ 34.5% |
| July | 31 | 41 | ▲ 32.3% |
| August | 33 | – | – |
| September | 34 | – | – |
| October | 28 | – | in progress |
| November | 39 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 203 | 251 | ▲ 23.6% |
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 | 90.0% | 81.3% | ▼ 9.7% |
| February | 88.9% | 59.5% | ▼ 33.0% |
| March | 73.3% | 41.4% | ▼ 43.6% |
| April | 66.7% | 80.7% | ▲ 21.0% |
| May | 59.3% | 69.4% | ▲ 17.2% |
| June | 86.2% | 87.2% | ▲ 1.1% |
| July | 80.0% | 100.0% | ▲ 25.0% |
| August | 84.9% | – | – |
| September | 73.5% | – | – |
| October | 85.7% | – | in progress |
| November | 71.8% | – | – |
| December | 58.1% | – | – |
| Year-to-date average (Jan–Jul) | 77.8% | 74.2% | ▼ 4.6% |
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 | 1 | 0 | ▼ 100.0% |
| February | 0 | 0 | – |
| March | 1 | 0 | ▼ 100.0% |
| April | 0 | 1 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 1 | 1 | 0.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 3 | 2 | ▼ 33.3% |
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 99.3% 703
- Cancelled 0.7% 5
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 | 10 | 10 | 80.0% | 0 |
| November 2024 | 36 | 36 | 72.2% | 0 |
| December 2024 | 43 | 43 | 72.1% | 0 |
| January 2025 | 31 | 30 | 90.0% | 1 |
| February 2025 | 27 | 27 | 88.9% | 0 |
| March 2025 | 31 | 30 | 73.3% | 1 |
| April 2025 | 27 | 27 | 66.7% | 0 |
| May 2025 | 27 | 27 | 59.3% | 0 |
| June 2025 | 29 | 29 | 86.2% | 0 |
| July 2025 | 31 | 30 | 80.0% | 1 |
| August 2025 | 33 | 33 | 84.9% | 0 |
| September 2025 | 34 | 34 | 73.5% | 0 |
| October 2025 | 28 | 28 | 85.7% | 0 |
| November 2025 | 39 | 39 | 71.8% | 0 |
| December 2025 | 31 | 31 | 58.1% | 0 |
| January 2026 | 32 | 32 | 81.3% | 0 |
| February 2026 | 42 | 42 | 59.5% | 0 |
| March 2026 | 29 | 29 | 41.4% | 0 |
| April 2026 | 32 | 31 | 80.7% | 1 |
| May 2026 | 36 | 36 | 69.4% | 0 |
| June 2026 | 39 | 39 | 87.2% | 0 |
| July 2026 | 41 | 40 | 100.0% | 1 |