WN4171
WN4171 (Southwest Airlines) is a multi-stop service on 23 routes, busiest Phoenix to Santa Ana. Of 416 departures recorded from October 2024 to July 2026, 76.4% left on time, according to the US BTS.
- On-time departures76.4%of 416 flights
- Average delay11.1 min
- July 202630
- Cancelled1.2%
- Legs flown under this number23
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 | 3 | 23 | ▲ 666.7% |
| February | 10 | 27 | ▲ 170.0% |
| March | 23 | 7 | ▼ 69.6% |
| April | 38 | 25 | ▼ 34.2% |
| May | 47 | 30 | ▼ 36.2% |
| June | 5 | 30 | ▲ 500.0% |
| July | – | 30 | – |
| August | 26 | – | – |
| September | 30 | – | – |
| October | 23 | – | in progress |
| November | 3 | – | – |
| December | 2 | – | – |
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 | 66.7% | 77.3% | ▲ 15.9% |
| February | 50.0% | 48.2% | ▼ 3.7% |
| March | 78.3% | 57.1% | ▼ 27.0% |
| April | 81.1% | 80.0% | ▼ 1.3% |
| May | 78.7% | 73.3% | ▼ 6.8% |
| June | 80.0% | 82.8% | ▲ 3.5% |
| July | – | 89.3% | – |
| August | 76.9% | – | – |
| September | 60.0% | – | – |
| October | 91.3% | – | in progress |
| November | 66.7% | – | – |
| December | 100.0% | – | – |
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 periods18 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 1 | – |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 1 | 0 | ▼ 100.0% |
| May | 0 | 0 | – |
| June | 0 | 1 | – |
| July | – | 2 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | 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 98.8% 411
- Cancelled 1.2% 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
5| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| PHX SNA Phoenix Sky Harbor International Airport – John Wayne Orange County International Airport | 544 | 7.5 min | 77.6% | 58 |
| SAT PHX San Antonio International Airport – Phoenix Sky Harbor International Airport | 1,354 | 7.7 min | 79.0% | 57 |
| RSW IND Southwest Florida International Airport – Indianapolis International Airport | 1,525 | 17.2 min | 68.4% | 57 |
| SAN BWI San Diego International Airport – Baltimore/Washington International Thurgood Marshall Airport | 3,686 | 15.2 min | 61.5% | 53 |
| CLE MDW Cleveland Hopkins International Airport – Chicago Midway International Airport | 493 | 0.6 min | 93.9% | 34 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 16 | 16 | 93.8% | 0 |
| November 2024 | 5 | 5 | 80.0% | 0 |
| December 2024 | 13 | 13 | 84.6% | 0 |
| January 2025 | 3 | 3 | 66.7% | 0 |
| February 2025 | 10 | 10 | 50.0% | 0 |
| March 2025 | 23 | 23 | 78.3% | 0 |
| April 2025 | 38 | 37 | 81.1% | 1 |
| May 2025 | 47 | 47 | 78.7% | 0 |
| June 2025 | 5 | 5 | 80.0% | 0 |
| August 2025 | 26 | 26 | 76.9% | 0 |
| September 2025 | 30 | 30 | 60.0% | 0 |
| October 2025 | 23 | 23 | 91.3% | 0 |
| November 2025 | 3 | 3 | 66.7% | 0 |
| December 2025 | 2 | 2 | 100.0% | 0 |
| January 2026 | 23 | 22 | 77.3% | 1 |
| February 2026 | 27 | 27 | 48.2% | 0 |
| March 2026 | 7 | 7 | 57.1% | 0 |
| April 2026 | 25 | 25 | 80.0% | 0 |
| May 2026 | 30 | 30 | 73.3% | 0 |
| June 2026 | 30 | 29 | 82.8% | 1 |
| July 2026 | 30 | 28 | 89.3% | 2 |