WN4791
WN4791 (Southwest Airlines) is a multi-stop service on 17 routes, busiest Nashville to Salt Lake City. Of 343 departures recorded from October 2024 to July 2026, 64.9% left on time, according to the US BTS.
- On-time departures64.9%of 343 flights
- Average delay19.9 min
- July 202630▲ 11.1%vs July 2025
- Cancelled0.3%
- Legs flown under this number17
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods17 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 22 | 24 | ▲ 9.1% |
| February | 10 | 13 | ▲ 30.0% |
| March | 22 | 6 | ▼ 72.7% |
| April | 37 | 1 | ▼ 97.3% |
| May | 45 | – | – |
| June | 27 | 27 | 0.0% |
| July | 27 | 30 | ▲ 11.1% |
| August | 6 | – | – |
| September | 4 | – | – |
| October | – | – | in progress |
| November | 5 | – | – |
| December | 11 | – | – |
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 periods17 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 86.4% | 79.2% | ▼ 8.3% |
| February | 100.0% | 76.9% | ▼ 23.1% |
| March | 71.4% | 66.7% | ▼ 6.7% |
| April | 81.1% | 100.0% | ▲ 23.3% |
| May | 40.0% | – | – |
| June | 81.5% | 33.3% | ▼ 59.1% |
| July | 85.2% | 43.3% | ▼ 49.1% |
| August | 50.0% | – | – |
| September | 100.0% | – | – |
| October | – | – | in progress |
| November | 40.0% | – | – |
| December | 27.3% | – | – |
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 periods17 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | 0 | 0 | – |
| March | 1 | 0 | ▼ 100.0% |
| April | 0 | 0 | – |
| May | 0 | – | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | – | – | in progress |
| November | 0 | – | – |
| December | 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 99.7% 342
- Cancelled 0.3% 1
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 |
|---|---|---|---|---|
| BNA SLC Nashville International Airport – Salt Lake City International Airport | 2,255 | 30.6 min | 38.6% | 57 |
| MDW DAL Chicago Midway International Airport – Dallas Love Field | 1,277 | 25.8 min | 58.0% | 50 |
| SAT LAS San Antonio International Airport – Harry Reid International Airport | 1,718 | 11.5 min | 83.7% | 43 |
| PHX MSP Phoenix Sky Harbor International Airport – Minneapolis–Saint Paul International Airport / Wold–Chamberlain Field | 2,051 | 7.9 min | 81.8% | 33 |
| MCO MDW Orlando International Airport – Chicago Midway International Airport | 1,595 | 17.9 min | 68.8% | 32 |
| SMF LAS Sacramento International Airport – Harry Reid International Airport | 639 | -1.2 min | 96.8% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 10 | 10 | 80.0% | 0 |
| November 2024 | 5 | 5 | 60.0% | 0 |
| December 2024 | 11 | 11 | 54.6% | 0 |
| January 2025 | 22 | 22 | 86.4% | 0 |
| February 2025 | 10 | 10 | 100.0% | 0 |
| March 2025 | 22 | 21 | 71.4% | 1 |
| April 2025 | 37 | 37 | 81.1% | 0 |
| May 2025 | 45 | 45 | 40.0% | 0 |
| June 2025 | 27 | 27 | 81.5% | 0 |
| July 2025 | 27 | 27 | 85.2% | 0 |
| August 2025 | 6 | 6 | 50.0% | 0 |
| September 2025 | 4 | 4 | 100.0% | 0 |
| November 2025 | 5 | 5 | 40.0% | 0 |
| December 2025 | 11 | 11 | 27.3% | 0 |
| January 2026 | 24 | 24 | 79.2% | 0 |
| February 2026 | 13 | 13 | 76.9% | 0 |
| March 2026 | 6 | 6 | 66.7% | 0 |
| April 2026 | 1 | 1 | 100.0% | 0 |
| June 2026 | 27 | 27 | 33.3% | 0 |
| July 2026 | 30 | 30 | 43.3% | 0 |