WN4177
WN4177 (Southwest Airlines) is a multi-stop service on 26 routes, busiest Savannah to Nashville. Of 324 departures recorded from October 2024 to July 2026, 64.6% left on time, according to the US BTS.
- On-time departures64.6%of 324 flights
- Average delay14.5 min
- July 202664
- Cancelled1.5%
- Legs flown under this number26
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 | 16 | 6 | ▼ 62.5% |
| February | 10 | 18 | ▲ 80.0% |
| March | 7 | 16 | ▲ 128.6% |
| April | 7 | 24 | ▲ 242.9% |
| May | 10 | 25 | ▲ 150.0% |
| June | 1 | 53 | ▲ 5,200.0% |
| July | – | 64 | – |
| August | 11 | – | – |
| September | 13 | – | – |
| October | 4 | – | in progress |
| November | 10 | – | – |
| December | 22 | – | – |
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 | 100.0% | 83.3% | ▼ 16.7% |
| February | 100.0% | 100.0% | 0.0% |
| March | 100.0% | 62.5% | ▼ 37.5% |
| April | 100.0% | 83.3% | ▼ 16.7% |
| May | 90.0% | 84.0% | ▼ 6.7% |
| June | 100.0% | 43.4% | ▼ 56.6% |
| July | – | 42.9% | – |
| August | 63.6% | – | – |
| September | 30.8% | – | – |
| October | 75.0% | – | in progress |
| November | 70.0% | – | – |
| December | 30.0% | – | – |
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 | 0 | 0 | – |
| April | 1 | 0 | ▼ 100.0% |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | – | 1 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 2 | – | – |
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 98.5% 319
- Cancelled 1.5% 5
Share of all recorded flights in the period, all legs. · Oct 15, 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 |
|---|---|---|---|---|
| SAV BNA Savannah Hilton Head International Airport – Nashville International Airport | 672 | 2.6 min | 85.7% | 49 |
| DTW LAS Detroit Metropolitan Wayne County Airport – Harry Reid International Airport | 2,808 | 30.2 min | 26.5% | 49 |
| STL DTW St. Louis Lambert International Airport – Detroit Metropolitan Wayne County Airport | 707 | 16.6 min | 45.5% | 33 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 6 | 6 | 100.0% | 0 |
| December 2024 | 1 | 1 | 100.0% | 0 |
| January 2025 | 16 | 15 | 100.0% | 1 |
| February 2025 | 10 | 10 | 100.0% | 0 |
| March 2025 | 7 | 7 | 100.0% | 0 |
| April 2025 | 7 | 6 | 100.0% | 1 |
| May 2025 | 10 | 10 | 90.0% | 0 |
| June 2025 | 1 | 1 | 100.0% | 0 |
| August 2025 | 11 | 11 | 63.6% | 0 |
| September 2025 | 13 | 13 | 30.8% | 0 |
| October 2025 | 4 | 4 | 75.0% | 0 |
| November 2025 | 10 | 10 | 70.0% | 0 |
| December 2025 | 22 | 20 | 30.0% | 2 |
| January 2026 | 6 | 6 | 83.3% | 0 |
| February 2026 | 18 | 18 | 100.0% | 0 |
| March 2026 | 16 | 16 | 62.5% | 0 |
| April 2026 | 24 | 24 | 83.3% | 0 |
| May 2026 | 25 | 25 | 84.0% | 0 |
| June 2026 | 53 | 53 | 43.4% | 0 |
| July 2026 | 64 | 63 | 42.9% | 1 |