WN1441
WN1441 (Southwest Airlines) is a multi-stop service on 25 routes, busiest Boston to St Louis. Of 563 departures recorded from October 2024 to July 2026, 76.6% left on time, according to the US BTS.
- On-time departures76.6%of 563 flights
- Average delay13.0 min
- July 202630▼ 3.2%vs July 2025
- Cancelled2.1%
- 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 | 31 | 13 | ▼ 58.1% |
| February | 36 | 16 | ▼ 55.6% |
| March | 32 | 29 | ▼ 9.4% |
| April | 30 | 30 | 0.0% |
| May | 30 | 31 | ▲ 3.3% |
| June | 30 | 30 | 0.0% |
| July | 31 | 30 | ▼ 3.2% |
| August | 23 | – | – |
| September | 22 | – | – |
| October | 17 | – | in progress |
| November | 18 | – | – |
| December | 15 | – | – |
| Year to date (Jan–Jul) | 220 | 179 | ▼ 18.6% |
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 | 89.7% | 80.0% | ▼ 10.8% |
| February | 83.3% | 81.3% | ▼ 2.5% |
| March | 87.5% | 79.3% | ▼ 9.4% |
| April | 76.7% | 90.0% | ▲ 17.4% |
| May | 80.0% | 93.6% | ▲ 16.9% |
| June | 83.3% | 39.3% | ▼ 52.9% |
| July | 67.7% | 16.0% | ▼ 76.4% |
| August | 82.6% | – | – |
| September | 100.0% | – | – |
| October | 64.7% | – | in progress |
| November | 72.2% | – | – |
| December | 46.7% | – | – |
| Year-to-date average (Jan–Jul) | 81.2% | 68.5% | ▼ 15.6% |
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 | 2 | 3 | ▲ 50.0% |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 2 | – |
| July | 0 | 5 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 2 | 10 | ▲ 400.0% |
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 97.9% 551
- Cancelled 2.1% 12
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
6| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| BOS STL Boston Logan International Airport – St. Louis Lambert International Airport | 1,680 | 10.8 min | 76.3% | 139 |
| BNA CMH Nashville International Airport – John Glenn Columbus International Airport | 543 | 2.6 min | 91.6% | 85 |
| CHS BNA Charleston International Airport – Nashville International Airport | 706 | -0.9 min | 96.6% | 58 |
| MDW RSW Chicago Midway International Airport – Southwest Florida International Airport | 1,782 | 12.1 min | 79.0% | 57 |
| DCA MCO Ronald Reagan Washington National Airport – Orlando International Airport | 1,224 | 59.9 min | 11.9% | 49 |
| DEN SFO Denver International Airport – San Francisco International Airport | 1,553 | 12.6 min | 75.8% | 33 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 11 | 11 | 63.6% | 0 |
| November 2024 | 27 | 27 | 85.2% | 0 |
| December 2024 | 31 | 31 | 90.3% | 0 |
| January 2025 | 31 | 29 | 89.7% | 2 |
| February 2025 | 36 | 36 | 83.3% | 0 |
| March 2025 | 32 | 32 | 87.5% | 0 |
| April 2025 | 30 | 30 | 76.7% | 0 |
| May 2025 | 30 | 30 | 80.0% | 0 |
| June 2025 | 30 | 30 | 83.3% | 0 |
| July 2025 | 31 | 31 | 67.7% | 0 |
| August 2025 | 23 | 23 | 82.6% | 0 |
| September 2025 | 22 | 22 | 100.0% | 0 |
| October 2025 | 17 | 17 | 64.7% | 0 |
| November 2025 | 18 | 18 | 72.2% | 0 |
| December 2025 | 15 | 15 | 46.7% | 0 |
| January 2026 | 13 | 10 | 80.0% | 3 |
| February 2026 | 16 | 16 | 81.3% | 0 |
| March 2026 | 29 | 29 | 79.3% | 0 |
| April 2026 | 30 | 30 | 90.0% | 0 |
| May 2026 | 31 | 31 | 93.6% | 0 |
| June 2026 | 30 | 28 | 39.3% | 2 |
| July 2026 | 30 | 25 | 16.0% | 5 |