WN4636
WN4636 (Southwest Airlines) is a multi-stop service on 17 routes, busiest Los Angeles to Oakland. Of 336 departures recorded from October 2024 to July 2026, 74.7% left on time, according to the US BTS.
- On-time departures74.7%of 336 flights
- Average delay13.8 min
- July 20267
- Cancelled0.0%
- 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 periods15 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 25 | 9 | ▼ 64.0% |
| February | 24 | 18 | ▼ 25.0% |
| March | 30 | 29 | ▼ 3.3% |
| April | 10 | 38 | ▲ 280.0% |
| May | 4 | 38 | ▲ 850.0% |
| June | 1 | 13 | ▲ 1,200.0% |
| July | – | 7 | – |
| August | – | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 6 | – | – |
| December | 13 | – | – |
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 periods15 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 96.0% | 77.8% | ▼ 19.0% |
| February | 83.3% | 66.7% | ▼ 20.0% |
| March | 93.3% | 62.1% | ▼ 33.5% |
| April | 80.0% | 57.9% | ▼ 27.6% |
| May | 25.0% | 52.6% | ▲ 110.5% |
| June | 100.0% | 61.5% | ▼ 38.5% |
| July | – | 71.4% | – |
| August | – | – | – |
| September | – | – | – |
| October | – | – | in progress |
| November | 83.3% | – | – |
| December | 61.5% | – | – |
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 periods15 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 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% 336
- Cancelled 0.0% 0
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 26, 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 |
|---|---|---|---|---|
| LAX OAK Los Angeles International Airport – Oakland San Francisco Bay Airport | 543 | -0.4 min | 92.6% | 54 |
| AUS ELP Austin Bergstrom International Airport – El Paso International Airport | 849 | 31.0 min | 48.0% | 50 |
| LGA BNA LaGuardia Airport – Nashville International Airport | 1,228 | 5.0 min | 87.9% | 33 |
| HOU BNA William P. Hobby Airport – Nashville International Airport | 1,078 | 31.3 min | 48.5% | 33 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 36 | 36 | 83.3% | 0 |
| November 2024 | 21 | 21 | 95.2% | 0 |
| December 2024 | 14 | 14 | 100.0% | 0 |
| January 2025 | 25 | 25 | 96.0% | 0 |
| February 2025 | 24 | 24 | 83.3% | 0 |
| March 2025 | 30 | 30 | 93.3% | 0 |
| April 2025 | 10 | 10 | 80.0% | 0 |
| May 2025 | 4 | 4 | 25.0% | 0 |
| June 2025 | 1 | 1 | 100.0% | 0 |
| November 2025 | 6 | 6 | 83.3% | 0 |
| December 2025 | 13 | 13 | 61.5% | 0 |
| January 2026 | 9 | 9 | 77.8% | 0 |
| February 2026 | 18 | 18 | 66.7% | 0 |
| March 2026 | 29 | 29 | 62.1% | 0 |
| April 2026 | 38 | 38 | 57.9% | 0 |
| May 2026 | 38 | 38 | 52.6% | 0 |
| June 2026 | 13 | 13 | 61.5% | 0 |
| July 2026 | 7 | 7 | 71.4% | 0 |