WN3257
WN3257 (Southwest Airlines) is a multi-stop service on 25 routes, busiest Nashville to St Louis. Of 700 departures recorded from October 2024 to July 2026, 72.4% left on time, according to the US BTS.
- On-time departures72.4%of 700 flights
- Average delay15.8 min
- July 202632▲ 28.0%vs July 2025
- Cancelled0.7%
- Legs flown under this number25
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 | 30 | 36 | ▲ 20.0% |
| February | 28 | 26 | ▼ 7.1% |
| March | 47 | 35 | ▼ 25.5% |
| April | 37 | 31 | ▼ 16.2% |
| May | 34 | 31 | ▼ 8.8% |
| June | 29 | 31 | ▲ 6.9% |
| July | 25 | 32 | ▲ 28.0% |
| August | 42 | – | – |
| September | 43 | – | – |
| October | 31 | – | in progress |
| November | 29 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 230 | 222 | ▼ 3.5% |
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 | 81.5% | 71.4% | ▼ 12.3% |
| February | 75.0% | 73.1% | ▼ 2.6% |
| March | 59.6% | 62.9% | ▲ 5.5% |
| April | 75.7% | 77.4% | ▲ 2.3% |
| May | 91.2% | 76.7% | ▼ 15.9% |
| June | 51.7% | 83.9% | ▲ 62.2% |
| July | 28.0% | 65.6% | ▲ 134.4% |
| August | 88.1% | – | – |
| September | 93.0% | – | – |
| October | 67.7% | – | in progress |
| November | 65.5% | – | – |
| December | 48.4% | – | – |
| Year-to-date average (Jan–Jul) | 66.1% | 73.0% | ▲ 10.4% |
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 | 3 | 1 | ▼ 66.7% |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 1 | – |
| June | 0 | 0 | – |
| July | 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% 695
- Cancelled 0.7% 5
Share of all recorded flights in the period, all legs. · Oct 13, 2024 → Jul 31, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
7| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| BNA STL Nashville International Airport – St. Louis Lambert International Airport | 437 | 7.8 min | 78.1% | 117 |
| LAS PIT Harry Reid International Airport – Pittsburgh International Airport | 3,066 | 20.5 min | 58.7% | 63 |
| PHX LAX Phoenix Sky Harbor International Airport – Los Angeles International Airport | 595 | 3.7 min | 91.4% | 58 |
| MDW DAL Chicago Midway International Airport – Dallas Love Field | 1,277 | 17.0 min | 79.0% | 58 |
| HOU PHX William P. Hobby Airport – Phoenix Sky Harbor International Airport | 1,638 | 7.7 min | 89.7% | 58 |
| DAL COS Dallas Love Field – City of Colorado Springs Municipal Airport | 969 | 24.2 min | 73.5% | 34 |
| BWI BOS Baltimore/Washington International Thurgood Marshall Airport – Boston Logan International Airport | 594 | 18.6 min | 57.6% | 33 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 17 | 17 | 94.1% | 0 |
| November 2024 | 27 | 27 | 70.4% | 0 |
| December 2024 | 28 | 28 | 85.7% | 0 |
| January 2025 | 30 | 27 | 81.5% | 3 |
| February 2025 | 28 | 28 | 75.0% | 0 |
| March 2025 | 47 | 47 | 59.6% | 0 |
| April 2025 | 37 | 37 | 75.7% | 0 |
| May 2025 | 34 | 34 | 91.2% | 0 |
| June 2025 | 29 | 29 | 51.7% | 0 |
| July 2025 | 25 | 25 | 28.0% | 0 |
| August 2025 | 42 | 42 | 88.1% | 0 |
| September 2025 | 43 | 43 | 93.0% | 0 |
| October 2025 | 31 | 31 | 67.7% | 0 |
| November 2025 | 29 | 29 | 65.5% | 0 |
| December 2025 | 31 | 31 | 48.4% | 0 |
| January 2026 | 36 | 35 | 71.4% | 1 |
| February 2026 | 26 | 26 | 73.1% | 0 |
| March 2026 | 35 | 35 | 62.9% | 0 |
| April 2026 | 31 | 31 | 77.4% | 0 |
| May 2026 | 31 | 30 | 76.7% | 1 |
| June 2026 | 31 | 31 | 83.9% | 0 |
| July 2026 | 32 | 32 | 65.6% | 0 |