WN4101
WN4101 (Southwest Airlines) is a multi-stop service on 22 routes, busiest Oakland to Burbank. Of 346 departures recorded from October 2024 to July 2026, 73.1% left on time, according to the US BTS.
- On-time departures73.1%of 346 flights
- Average delay12.4 min
- July 202613▲ 1,200.0%vs July 2025
- Cancelled1.2%
- Legs flown under this number22
Recorded departures by month
All legs under this number combined; see the leg table.
The most recent periods19 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 22 | 2 | ▼ 90.9% |
| February | 21 | 9 | ▼ 57.1% |
| March | 4 | 13 | ▲ 225.0% |
| April | 6 | 44 | ▲ 633.3% |
| May | 9 | 52 | ▲ 477.8% |
| June | 1 | 17 | ▲ 1,600.0% |
| July | 1 | 13 | ▲ 1,200.0% |
| August | 19 | – | – |
| September | 22 | – | – |
| October | 18 | – | in progress |
| November | 24 | – | – |
| December | 20 | – | – |
| Year to date (Jan–Jul) | 64 | 150 | ▲ 134.4% |
according to the US BTS · October 2024 → July 2026
On-time departures by month
On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.
The most recent periods19 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 85.7% | 50.0% | ▼ 41.7% |
| February | 81.0% | 77.8% | ▼ 3.9% |
| March | 75.0% | 69.2% | ▼ 7.7% |
| April | 100.0% | 70.5% | ▼ 29.5% |
| May | 77.8% | 53.9% | ▼ 30.8% |
| June | 0.0% | 29.4% | – |
| July | 100.0% | 23.1% | ▼ 76.9% |
| August | 89.5% | – | – |
| September | 100.0% | – | – |
| October | 94.4% | – | in progress |
| November | 81.0% | – | – |
| December | 70.0% | – | – |
| Year-to-date average (Jan–Jul) | 74.2% | 53.4% | ▼ 28.0% |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
The most recent periods19 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 1 | 0 | ▼ 100.0% |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 3 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 1 | 0 | ▼ 100.0% |
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 98.8% 342
- Cancelled 1.2% 4
Share of all recorded flights in the period, all legs. · Oct 13, 2024 → Jul 29, 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 BUR Oakland San Francisco Bay Airport – Hollywood Burbank/Bob Hope Airport | 523 | 1.8 min | 86.2% | 66 |
| PHX CLE Phoenix Sky Harbor International Airport – Cleveland Hopkins International Airport | 2,790 | 19.6 min | 55.2% | 58 |
| PHX PDX Phoenix Sky Harbor International Airport – Portland International Airport | 1,625 | 12.8 min | 74.4% | 46 |
| PHX SMF Phoenix Sky Harbor International Airport – Sacramento International Airport | 1,040 | -0.1 min | 95.2% | 42 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 9 | 9 | 88.9% | 0 |
| November 2024 | 7 | 7 | 100.0% | 0 |
| December 2024 | 13 | 13 | 92.3% | 0 |
| January 2025 | 22 | 21 | 85.7% | 1 |
| February 2025 | 21 | 21 | 81.0% | 0 |
| March 2025 | 4 | 4 | 75.0% | 0 |
| April 2025 | 6 | 6 | 100.0% | 0 |
| May 2025 | 9 | 9 | 77.8% | 0 |
| June 2025 | 1 | 1 | 0.0% | 0 |
| July 2025 | 1 | 1 | 100.0% | 0 |
| August 2025 | 19 | 19 | 89.5% | 0 |
| September 2025 | 22 | 22 | 100.0% | 0 |
| October 2025 | 18 | 18 | 94.4% | 0 |
| November 2025 | 24 | 21 | 81.0% | 3 |
| December 2025 | 20 | 20 | 70.0% | 0 |
| January 2026 | 2 | 2 | 50.0% | 0 |
| February 2026 | 9 | 9 | 77.8% | 0 |
| March 2026 | 13 | 13 | 69.2% | 0 |
| April 2026 | 44 | 44 | 70.5% | 0 |
| May 2026 | 52 | 52 | 53.9% | 0 |
| June 2026 | 17 | 17 | 29.4% | 0 |
| July 2026 | 13 | 13 | 23.1% | 0 |