WN4476
WN4476 (Southwest Airlines) is a multi-stop service on 23 routes, busiest New York to Atlanta. Of 345 departures recorded from October 2024 to July 2026, 68.8% left on time, according to the US BTS.
- On-time departures68.8%of 345 flights
- Average delay17.8 min
- July 202618▼ 41.9%vs July 2025
- Cancelled1.5%
- Legs flown under this number23
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 | 28 | 4 | ▼ 85.7% |
| February | 24 | 21 | ▼ 12.5% |
| March | 18 | 29 | ▲ 61.1% |
| April | 7 | 9 | ▲ 28.6% |
| May | 5 | 4 | ▼ 20.0% |
| June | 27 | 16 | ▼ 40.7% |
| July | 31 | 18 | ▼ 41.9% |
| August | 8 | – | – |
| September | 4 | – | – |
| October | 17 | – | in progress |
| November | 4 | – | – |
| December | 1 | – | – |
| Year to date (Jan–Jul) | 140 | 101 | ▼ 27.9% |
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 | 80.8% | 100.0% | ▲ 23.8% |
| February | 78.3% | 76.2% | ▼ 2.6% |
| March | 76.5% | 71.4% | ▼ 6.6% |
| April | 85.7% | 66.7% | ▼ 22.2% |
| May | 60.0% | 0.0% | ▼ 100.0% |
| June | 63.0% | 68.8% | ▲ 9.2% |
| July | 71.0% | 44.4% | ▼ 37.4% |
| August | 37.5% | – | – |
| September | 75.0% | – | – |
| October | 64.7% | – | in progress |
| November | 75.0% | – | – |
| December | 0.0% | – | – |
| Year-to-date average (Jan–Jul) | 73.6% | 61.1% | ▼ 17.0% |
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 | 0 | ▼ 100.0% |
| February | 1 | 0 | ▼ 100.0% |
| March | 1 | 1 | 0.0% |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 4 | 1 | ▼ 75.0% |
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 98.6% 340
- Cancelled 1.4% 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
3| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| LGA ATL LaGuardia Airport – Hartsfield Jackson Atlanta International Airport | 1,225 | 17.6 min | 72.9% | 110 |
| SFO BWI San Francisco International Airport – Baltimore/Washington International Thurgood Marshall Airport | 3,944 | 17.1 min | 65.6% | 61 |
| BWI SMF Baltimore/Washington International Thurgood Marshall Airport – Sacramento International Airport | 3,845 | 15.9 min | 55.9% | 34 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 13 | 13 | 76.9% | 0 |
| November 2024 | 28 | 28 | 75.0% | 0 |
| December 2024 | 29 | 29 | 62.1% | 0 |
| January 2025 | 28 | 26 | 80.8% | 2 |
| February 2025 | 24 | 23 | 78.3% | 1 |
| March 2025 | 18 | 17 | 76.5% | 1 |
| April 2025 | 7 | 7 | 85.7% | 0 |
| May 2025 | 5 | 5 | 60.0% | 0 |
| June 2025 | 27 | 27 | 63.0% | 0 |
| July 2025 | 31 | 31 | 71.0% | 0 |
| August 2025 | 8 | 8 | 37.5% | 0 |
| September 2025 | 4 | 4 | 75.0% | 0 |
| October 2025 | 17 | 17 | 64.7% | 0 |
| November 2025 | 4 | 4 | 75.0% | 0 |
| December 2025 | 1 | 1 | 0.0% | 0 |
| January 2026 | 4 | 4 | 100.0% | 0 |
| February 2026 | 21 | 21 | 76.2% | 0 |
| March 2026 | 29 | 28 | 71.4% | 1 |
| April 2026 | 9 | 9 | 66.7% | 0 |
| May 2026 | 4 | 4 | 0.0% | 0 |
| June 2026 | 16 | 16 | 68.8% | 0 |
| July 2026 | 18 | 18 | 44.4% | 0 |