WN453
WN453 (Southwest Airlines) is a multi-stop service on 21 routes, busiest Pittsburgh to Nashville. Of 488 departures recorded from October 2024 to March 2026, 80.7% left on time, according to the US BTS.
- On-time departures80.7%of 488 flights
- Average delay7.3 min
- March 20264▼ 78.9%vs March 2025
- Cancelled1.4%
- Legs flown under this number21
Recorded departures by month
All legs under this number combined; see the leg table.
The most recent periods15 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 28 | 30 | ▲ 7.1% |
| February | 26 | 28 | ▲ 7.7% |
| March | 19 | 4 | ▼ 78.9% |
| April | 30 | – | – |
| May | 35 | – | – |
| June | 30 | – | – |
| July | 30 | – | – |
| August | 28 | – | – |
| September | 26 | – | – |
| October | 39 | – | in progress |
| November | 26 | – | – |
| December | 27 | – | – |
| Year to date (Jan–Mar) | 73 | 62 | ▼ 15.1% |
according to the US BTS · October 2024 → March 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 periods15 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 100.0% | 62.1% | ▼ 37.9% |
| February | 88.5% | 78.6% | ▼ 11.2% |
| March | 79.0% | 75.0% | ▼ 5.0% |
| April | 83.3% | – | – |
| May | 74.3% | – | – |
| June | 62.1% | – | – |
| July | 65.5% | – | – |
| August | 92.6% | – | – |
| September | 96.0% | – | – |
| October | 53.9% | – | in progress |
| November | 76.9% | – | – |
| December | 85.2% | – | – |
| Year-to-date average (Jan–Mar) | 89.1% | 71.9% | ▼ 19.4% |
according to the US BTS · October 2024 → March 2026
Average departure delay by month
according to the US BTS · October 2024 → March 2026
Cancelled departures by month
The most recent periods15 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 2 | 1 | ▼ 50.0% |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | – | – |
| May | 0 | – | – |
| June | 1 | – | – |
| July | 1 | – | – |
| August | 1 | – | – |
| September | 1 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Mar) | 2 | 1 | ▼ 50.0% |
according to the US BTS · October 2024 → March 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 98.6% 481
- Cancelled 1.4% 7
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Mar 4, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
6| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| PIT BNA Pittsburgh International Airport – Nashville International Airport | 743 | -0.4 min | 99.1% | 115 |
| BUR PHX Hollywood Burbank/Bob Hope Airport – Phoenix Sky Harbor International Airport | 593 | -0.5 min | 95.9% | 51 |
| RSW MCI Southwest Florida International Airport – Kansas City International Airport | 1,861 | 11.0 min | 63.0% | 47 |
| ELP LAS El Paso International Airport – Harry Reid International Airport | 938 | 5.4 min | 78.6% | 42 |
| FLL BWI Fort Lauderdale Hollywood International Airport – Baltimore/Washington International Thurgood Marshall Airport | 1,493 | 28.3 min | 46.9% | 34 |
| BWI SAV Baltimore/Washington International Thurgood Marshall Airport – Savannah Hilton Head International Airport | 884 | 4.6 min | 87.5% | 32 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 90.0% | 0 |
| November 2024 | 30 | 30 | 100.0% | 0 |
| December 2024 | 32 | 32 | 100.0% | 0 |
| January 2025 | 28 | 26 | 100.0% | 2 |
| February 2025 | 26 | 26 | 88.5% | 0 |
| March 2025 | 19 | 19 | 79.0% | 0 |
| April 2025 | 30 | 30 | 83.3% | 0 |
| May 2025 | 35 | 35 | 74.3% | 0 |
| June 2025 | 30 | 29 | 62.1% | 1 |
| July 2025 | 30 | 29 | 65.5% | 1 |
| August 2025 | 28 | 27 | 92.6% | 1 |
| September 2025 | 26 | 25 | 96.0% | 1 |
| October 2025 | 39 | 39 | 53.9% | 0 |
| November 2025 | 26 | 26 | 76.9% | 0 |
| December 2025 | 27 | 27 | 85.2% | 0 |
| January 2026 | 30 | 29 | 62.1% | 1 |
| February 2026 | 28 | 28 | 78.6% | 0 |
| March 2026 | 4 | 4 | 75.0% | 0 |