WN3966
WN3966 (Southwest Airlines) is a multi-stop service on 29 routes, busiest Phoenix to Burbank. Of 519 departures recorded from October 2024 to July 2026, 73.5% left on time, according to the US BTS.
- On-time departures73.5%of 519 flights
- Average delay15.1 min
- July 202627▼ 6.9%vs July 2025
- Cancelled0.4%
- Legs flown under this number29
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 | 19 | 33 | ▲ 73.7% |
| February | 19 | 36 | ▲ 89.5% |
| March | 30 | 25 | ▼ 16.7% |
| April | 22 | 26 | ▲ 18.2% |
| May | 23 | 27 | ▲ 17.4% |
| June | 24 | 26 | ▲ 8.3% |
| July | 29 | 27 | ▼ 6.9% |
| August | 3 | – | – |
| September | – | – | – |
| October | 33 | – | in progress |
| November | 28 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 166 | 200 | ▲ 20.5% |
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 | 84.2% | 93.9% | ▲ 11.6% |
| February | 61.1% | 88.9% | ▲ 45.5% |
| March | 70.0% | 96.0% | ▲ 37.1% |
| April | 77.3% | 88.5% | ▲ 14.5% |
| May | 47.8% | 70.4% | ▲ 47.1% |
| June | 91.7% | 38.5% | ▼ 58.0% |
| July | 89.7% | 29.6% | ▼ 67.0% |
| August | 66.7% | – | – |
| September | – | – | – |
| October | 39.4% | – | in progress |
| November | 78.6% | – | – |
| December | 83.3% | – | – |
| Year-to-date average (Jan–Jul) | 74.5% | 72.2% | ▼ 3.1% |
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 | 1 | 0 | ▼ 100.0% |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | – | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 1 | – | – |
| 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 99.6% 517
- Cancelled 0.4% 2
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 31, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
6| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| PHX BUR Phoenix Sky Harbor International Airport – Hollywood Burbank/Bob Hope Airport | 593 | 10.5 min | 80.7% | 58 |
| SAN PHX San Diego International Airport – Phoenix Sky Harbor International Airport | 489 | 1.9 min | 90.9% | 55 |
| MKE AUS General Mitchell International Airport – Austin Bergstrom International Airport | 1,662 | 4.1 min | 94.2% | 52 |
| STL PHL St. Louis Lambert International Airport – Philadelphia International Airport | 1,306 | 48.5 min | 30.0% | 50 |
| SMF MDW Sacramento International Airport – Chicago Midway International Airport | 2,874 | 6.8 min | 78.0% | 50 |
| IND MCO Indianapolis International Airport – Orlando International Airport | 1,336 | 26.2 min | 62.5% | 40 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 34 | 34 | 79.4% | 0 |
| November 2024 | 17 | 17 | 88.2% | 0 |
| December 2024 | 7 | 7 | 71.4% | 0 |
| January 2025 | 19 | 19 | 84.2% | 0 |
| February 2025 | 19 | 18 | 61.1% | 1 |
| March 2025 | 30 | 30 | 70.0% | 0 |
| April 2025 | 22 | 22 | 77.3% | 0 |
| May 2025 | 23 | 23 | 47.8% | 0 |
| June 2025 | 24 | 24 | 91.7% | 0 |
| July 2025 | 29 | 29 | 89.7% | 0 |
| August 2025 | 3 | 3 | 66.7% | 0 |
| October 2025 | 33 | 33 | 39.4% | 0 |
| November 2025 | 28 | 28 | 78.6% | 0 |
| December 2025 | 31 | 30 | 83.3% | 1 |
| January 2026 | 33 | 33 | 93.9% | 0 |
| February 2026 | 36 | 36 | 88.9% | 0 |
| March 2026 | 25 | 25 | 96.0% | 0 |
| April 2026 | 26 | 26 | 88.5% | 0 |
| May 2026 | 27 | 27 | 70.4% | 0 |
| June 2026 | 26 | 26 | 38.5% | 0 |
| July 2026 | 27 | 27 | 29.6% | 0 |