WN4620
WN4620 (Southwest Airlines) is a multi-stop service on 10 routes, busiest Ontario to Sacramento. Of 314 departures recorded from October 2024 to July 2026, 70.1% left on time, according to the US BTS.
- On-time departures70.1%of 314 flights
- Average delay16.8 min
- July 202621
- Cancelled0.0%
- Legs flown under this number10
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods13 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 21 | 7 | ▼ 66.7% |
| February | 17 | – | – |
| March | 29 | 10 | ▼ 65.5% |
| April | 27 | 3 | ▼ 88.9% |
| May | 26 | – | – |
| June | 4 | 20 | ▲ 400.0% |
| July | – | 21 | – |
| August | – | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 29 | – | – |
| December | 40 | – | – |
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 periods13 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 85.7% | 85.7% | 0.0% |
| February | 82.4% | – | – |
| March | 86.2% | 30.0% | ▼ 65.2% |
| April | 63.0% | 33.3% | ▼ 47.1% |
| May | 50.0% | – | – |
| June | 75.0% | 50.0% | ▼ 33.3% |
| July | – | 42.9% | – |
| August | – | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 86.2% | – | – |
| December | 75.0% | – | – |
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 periods13 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | 0 | – | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | – | – |
| June | 0 | 0 | – |
| July | – | 0 | – |
| August | – | – | – |
| September | – | – | – |
| 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 100.0% 314
- 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
5| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| ONT SMF Ontario International Airport – Sacramento International Airport | 627 | 8.9 min | 83.3% | 84 |
| FLL BNA Fort Lauderdale Hollywood International Airport – Nashville International Airport | 1,278 | 8.2 min | 84.1% | 63 |
| BNA SJC Nashville International Airport – Mineta San Jose International Airport | 3,126 | 18.5 min | 56.0% | 50 |
| TPA DEN Tampa International Airport – Denver International Airport | 2,423 | 36.9 min | 44.7% | 38 |
| ATL AUS Hartsfield Jackson Atlanta International Airport – Austin Bergstrom International Airport | 1,305 | 8.5 min | 81.8% | 33 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 16 | 16 | 62.5% | 0 |
| November 2024 | 24 | 24 | 83.3% | 0 |
| December 2024 | 20 | 20 | 80.0% | 0 |
| January 2025 | 21 | 21 | 85.7% | 0 |
| February 2025 | 17 | 17 | 82.4% | 0 |
| March 2025 | 29 | 29 | 86.2% | 0 |
| April 2025 | 27 | 27 | 63.0% | 0 |
| May 2025 | 26 | 26 | 50.0% | 0 |
| June 2025 | 4 | 4 | 75.0% | 0 |
| November 2025 | 29 | 29 | 86.2% | 0 |
| December 2025 | 40 | 40 | 75.0% | 0 |
| January 2026 | 7 | 7 | 85.7% | 0 |
| March 2026 | 10 | 10 | 30.0% | 0 |
| April 2026 | 3 | 3 | 33.3% | 0 |
| June 2026 | 20 | 20 | 50.0% | 0 |
| July 2026 | 21 | 21 | 42.9% | 0 |