WN2456
WN2456 (Southwest Airlines) is a multi-stop service on 28 routes, busiest Nashville to Boston. Of 701 departures recorded from October 2024 to July 2026, 75.8% left on time, according to the US BTS.
- On-time departures75.8%of 701 flights
- Average delay13.8 min
- July 202631▲ 3.3%vs July 2025
- Cancelled1.7%
- Legs flown under this number28
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods18 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 28 | 19 | ▼ 32.1% |
| February | 24 | 9 | ▼ 62.5% |
| March | 48 | 29 | ▼ 39.6% |
| April | 64 | 46 | ▼ 28.1% |
| May | 72 | 46 | ▼ 36.1% |
| June | 34 | 34 | 0.0% |
| July | 30 | 31 | ▲ 3.3% |
| August | 4 | – | – |
| September | – | – | – |
| October | 38 | – | in progress |
| November | 36 | – | – |
| December | 21 | – | – |
| Year to date (Jan–Jul) | 300 | 214 | ▼ 28.7% |
according to the US BTS · October 2024 → July 2026
On-time departures by month
Months without data are left blank.
On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.
The most recent periods18 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 77.8% | 89.5% | ▲ 15.0% |
| February | 70.8% | 100.0% | ▲ 41.2% |
| March | 89.1% | 86.2% | ▼ 3.3% |
| April | 85.9% | 69.6% | ▼ 19.0% |
| May | 91.7% | 70.5% | ▼ 23.1% |
| June | 79.4% | 35.3% | ▼ 55.6% |
| July | 86.7% | 19.2% | ▼ 77.8% |
| August | 75.0% | – | – |
| September | – | – | – |
| October | 84.2% | – | in progress |
| November | 44.1% | – | – |
| December | 61.9% | – | – |
| Year-to-date average (Jan–Jul) | 83.1% | 67.2% | ▼ 19.1% |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
Months without data are left blank.
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
Months without data are left blank.
The most recent periods18 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 1 | 0 | ▼ 100.0% |
| February | 0 | 0 | – |
| March | 2 | 0 | ▼ 100.0% |
| April | 0 | 0 | – |
| May | 0 | 2 | – |
| June | 0 | 0 | – |
| July | 0 | 5 | – |
| August | 0 | – | – |
| September | – | – | – |
| October | 0 | – | in progress |
| November | 2 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 3 | 7 | ▲ 133.3% |
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 98.3% 689
- Cancelled 1.7% 12
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
8| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| BNA BOS Nashville International Airport – Boston Logan International Airport | 1,514 | 13.6 min | 75.2% | 110 |
| LGA DEN LaGuardia Airport – Denver International Airport | 2,600 | 60.0 min | 20.8% | 58 |
| BWI PVD Baltimore/Washington International Thurgood Marshall Airport – Rhode Island T. F. Green International Airport | 526 | 9.1 min | 87.9% | 58 |
| DAL MCI Dallas Love Field – Kansas City International Airport | 743 | 15.7 min | 66.1% | 57 |
| MDW HOU Chicago Midway International Airport – William P. Hobby Airport | 1,510 | 10.6 min | 80.4% | 51 |
| SAN PHX San Diego International Airport – Phoenix Sky Harbor International Airport | 489 | 25.6 min | 56.8% | 39 |
| LIH HNL Lihue Airport – Daniel K. Inouye International Airport | 163 | 2.9 min | 87.9% | 33 |
| BNA RSW Nashville International Airport – Southwest Florida International Airport | 1,164 | 13.6 min | 83.9% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 31 | 31 | 100.0% | 0 |
| November 2024 | 29 | 29 | 72.4% | 0 |
| December 2024 | 28 | 28 | 82.1% | 0 |
| January 2025 | 28 | 27 | 77.8% | 1 |
| February 2025 | 24 | 24 | 70.8% | 0 |
| March 2025 | 48 | 46 | 89.1% | 2 |
| April 2025 | 64 | 64 | 85.9% | 0 |
| May 2025 | 72 | 72 | 91.7% | 0 |
| June 2025 | 34 | 34 | 79.4% | 0 |
| July 2025 | 30 | 30 | 86.7% | 0 |
| August 2025 | 4 | 4 | 75.0% | 0 |
| October 2025 | 38 | 38 | 84.2% | 0 |
| November 2025 | 36 | 34 | 44.1% | 2 |
| December 2025 | 21 | 21 | 61.9% | 0 |
| January 2026 | 19 | 19 | 89.5% | 0 |
| February 2026 | 9 | 9 | 100.0% | 0 |
| March 2026 | 29 | 29 | 86.2% | 0 |
| April 2026 | 46 | 46 | 69.6% | 0 |
| May 2026 | 46 | 44 | 70.5% | 2 |
| June 2026 | 34 | 34 | 35.3% | 0 |
| July 2026 | 31 | 26 | 19.2% | 5 |