WN4991
WN4991 (Southwest Airlines) is a multi-stop service on 3 routes, busiest Nashville to Washington. Of 36 departures recorded from November 2025 to July 2026, 75.0% left on time, according to the US BTS.
- On-time departures75.0%of 36 flights
- Average delay8.1 min
- July 202618
- Cancelled0.0%
- Legs flown under this number3
Recorded departures by month
Short series — WN4991 has only 4 months so far. Enough to show the level now, not enough to read a trend.
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods4 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | – | – | – |
| February | – | 1 | – |
| March | – | – | – |
| April | – | – | – |
| May | – | – | – |
| June | – | 16 | – |
| July | – | 18 | – |
| August | – | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 1 | – | – |
| December | – | – | – |
according to the US BTS · November 2025 → July 2026
On-time departures by month
Short series — WN4991 has only 4 months so far. Enough to show the level now, not enough to read a trend.
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 periods4 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | – | – | – |
| February | – | 0.0% | – |
| March | – | – | – |
| April | – | – | – |
| May | – | – | – |
| June | – | 75.0% | – |
| July | – | 77.8% | – |
| August | – | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 100.0% | – | – |
| December | – | – | – |
according to the US BTS · November 2025 → July 2026
Average departure delay by month
Short series — WN4991 has only 4 months so far. Enough to show the level now, not enough to read a trend.
Months without data are left blank.
according to the US BTS · November 2025 → July 2026
Cancelled departures by month
Short series — WN4991 has only 4 months so far. Enough to show the level now, not enough to read a trend.
Months without data are left blank.
The most recent periods4 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | – | – | – |
| February | – | 0 | – |
| March | – | – | – |
| April | – | – | – |
| May | – | – | – |
| June | – | 0 | – |
| July | – | 0 | – |
| August | – | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 0 | – | – |
| December | – | – | – |
according to the US BTS · November 2025 → 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 100.0% 36
- Cancelled 0.0% 0
Share of all recorded flights in the period, all legs. · Nov 30, 2025 → Jul 31, 2026
Legs flown under this number
1| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| BNA DCA Nashville International Airport – Ronald Reagan Washington National Airport | 903 | 7.9 min | 76.5% | 34 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| November 2025 | 1 | 1 | 100.0% | 0 |
| February 2026 | 1 | 1 | 0.0% | 0 |
| June 2026 | 16 | 16 | 75.0% | 0 |
| July 2026 | 18 | 18 | 77.8% | 0 |