WN4773
WN4773 (Southwest Airlines) is a multi-stop service on 13 routes, busiest Chicago to Salt Lake City. Of 218 departures recorded from October 2024 to July 2026, 76.6% left on time, according to the US BTS.
- On-time departures76.6%of 218 flights
- Average delay13.2 min
- July 202618▲ 12.5%vs July 2025
- Cancelled0.0%
- Legs flown under this number13
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods11 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 25 | 1 | ▼ 96.0% |
| February | 24 | – | – |
| March | 4 | – | – |
| April | – | – | – |
| May | – | – | – |
| June | 16 | 16 | 0.0% |
| July | 16 | 18 | ▲ 12.5% |
| August | 21 | – | – |
| September | 21 | – | – |
| October | – | – | in progress |
| November | 1 | – | – |
| December | – | – | – |
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 periods11 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 72.0% | 100.0% | ▲ 38.9% |
| February | 66.7% | – | – |
| March | 75.0% | – | – |
| April | – | – | – |
| May | – | – | – |
| June | 37.5% | 93.8% | ▲ 150.0% |
| July | 18.8% | 88.9% | ▲ 374.1% |
| August | 90.5% | – | – |
| September | 95.2% | – | – |
| October | – | – | in progress |
| November | 0.0% | – | – |
| December | – | – | – |
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 periods11 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | 0 | – | – |
| March | 0 | – | – |
| April | – | – | – |
| May | – | – | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | – | – | in progress |
| November | 0 | – | – |
| December | – | – | – |
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 100.0% 218
- Cancelled 0.0% 0
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
4| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| MDW SLC Chicago Midway International Airport – Salt Lake City International Airport | 2,021 | 11.2 min | 78.8% | 80 |
| DEN SLC Denver International Airport – Salt Lake City International Airport | 628 | 47.8 min | 28.6% | 35 |
| SAN STS San Diego International Airport – Charles M. Schulz Sonoma County Airport | 819 | 1.2 min | 91.2% | 34 |
| ONT AUS Ontario International Airport – Austin Bergstrom International Airport | 1,923 | 2.5 min | 96.8% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 17 | 17 | 76.5% | 0 |
| November 2024 | 21 | 21 | 100.0% | 0 |
| December 2024 | 17 | 17 | 94.1% | 0 |
| January 2025 | 25 | 25 | 72.0% | 0 |
| February 2025 | 24 | 24 | 66.7% | 0 |
| March 2025 | 4 | 4 | 75.0% | 0 |
| June 2025 | 16 | 16 | 37.5% | 0 |
| July 2025 | 16 | 16 | 18.8% | 0 |
| August 2025 | 21 | 21 | 90.5% | 0 |
| September 2025 | 21 | 21 | 95.2% | 0 |
| November 2025 | 1 | 1 | 0.0% | 0 |
| January 2026 | 1 | 1 | 100.0% | 0 |
| June 2026 | 16 | 16 | 93.8% | 0 |
| July 2026 | 18 | 18 | 88.9% | 0 |