WN4401
WN4401 (Southwest Airlines) is a multi-stop service on 19 routes, busiest Oakland to Salt Lake City. Of 349 departures recorded from October 2024 to July 2026, 65.1% left on time, according to the US BTS.
- On-time departures65.1%of 349 flights
- Average delay18.8 min
- July 202627▲ 575.0%vs July 2025
- Cancelled1.4%
- Legs flown under this number19
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 | 14 | 5 | ▼ 64.3% |
| February | 9 | – | – |
| March | 5 | 23 | ▲ 360.0% |
| April | 21 | 16 | ▼ 23.8% |
| May | 26 | 14 | ▼ 46.2% |
| June | 8 | 25 | ▲ 212.5% |
| July | 4 | 27 | ▲ 575.0% |
| August | 16 | – | – |
| September | 17 | – | – |
| October | 4 | – | in progress |
| November | 19 | – | – |
| December | 24 | – | – |
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 | 78.6% | 100.0% | ▲ 27.3% |
| February | 77.8% | – | – |
| March | 80.0% | 90.9% | ▲ 13.6% |
| April | 57.1% | 93.8% | ▲ 64.1% |
| May | 30.8% | 92.9% | ▲ 201.8% |
| June | 100.0% | 29.2% | ▼ 70.8% |
| July | 100.0% | 15.4% | ▼ 84.6% |
| August | 100.0% | – | – |
| September | 94.1% | – | – |
| October | 50.0% | – | in progress |
| November | 72.2% | – | – |
| December | 34.8% | – | – |
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 | 0 | 0 | – |
| February | 0 | – | – |
| March | 0 | 1 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 1 | – |
| July | 0 | 1 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 1 | – | – |
| December | 1 | – | – |
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% 344
- Cancelled 1.4% 5
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 |
|---|---|---|---|---|
| OAK SLC Oakland San Francisco Bay Airport – Salt Lake City International Airport | 945 | 11.9 min | 73.2% | 82 |
| LGA DAL LaGuardia Airport – Dallas Love Field | 2,219 | 44.6 min | 18.8% | 50 |
| LGA ATL LaGuardia Airport – Hartsfield Jackson Atlanta International Airport | 1,225 | 41.7 min | 46.0% | 50 |
| STL MDW St. Louis Lambert International Airport – Chicago Midway International Airport | 404 | -4.9 min | 96.9% | 32 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 14 | 14 | 71.4% | 0 |
| November 2024 | 28 | 28 | 78.6% | 0 |
| December 2024 | 30 | 30 | 63.3% | 0 |
| January 2025 | 14 | 14 | 78.6% | 0 |
| February 2025 | 9 | 9 | 77.8% | 0 |
| March 2025 | 5 | 5 | 80.0% | 0 |
| April 2025 | 21 | 21 | 57.1% | 0 |
| May 2025 | 26 | 26 | 30.8% | 0 |
| June 2025 | 8 | 8 | 100.0% | 0 |
| July 2025 | 4 | 4 | 100.0% | 0 |
| August 2025 | 16 | 16 | 100.0% | 0 |
| September 2025 | 17 | 17 | 94.1% | 0 |
| October 2025 | 4 | 4 | 50.0% | 0 |
| November 2025 | 19 | 18 | 72.2% | 1 |
| December 2025 | 24 | 23 | 34.8% | 1 |
| January 2026 | 5 | 5 | 100.0% | 0 |
| March 2026 | 23 | 22 | 90.9% | 1 |
| April 2026 | 16 | 16 | 93.8% | 0 |
| May 2026 | 14 | 14 | 92.9% | 0 |
| June 2026 | 25 | 24 | 29.2% | 1 |
| July 2026 | 27 | 26 | 15.4% | 1 |