WN4189
WN4189 (Southwest Airlines) is a multi-stop service on 26 routes, busiest Chicago to Phoenix. Of 281 departures recorded from October 2024 to July 2026, 64.0% left on time, according to the US BTS.
- On-time departures64.0%of 281 flights
- Average delay26.7 min
- July 202642▲ 133.3%vs July 2025
- Cancelled1.1%
- Legs flown under this number26
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 | 7 | 4 | ▼ 42.9% |
| February | 8 | 5 | ▼ 37.5% |
| March | 1 | – | – |
| April | 3 | – | – |
| May | 8 | – | – |
| June | 16 | 38 | ▲ 137.5% |
| July | 18 | 42 | ▲ 133.3% |
| August | 3 | – | – |
| September | – | – | – |
| October | 37 | – | in progress |
| November | 17 | – | – |
| December | 15 | – | – |
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 | 100.0% | 75.0% | ▼ 25.0% |
| February | 37.5% | 100.0% | ▲ 166.7% |
| March | 100.0% | – | – |
| April | 66.7% | – | – |
| May | 75.0% | – | – |
| June | 37.5% | 71.1% | ▲ 89.5% |
| July | 52.9% | 58.5% | ▲ 10.6% |
| August | 66.7% | – | – |
| September | – | – | – |
| October | 64.9% | – | in progress |
| November | 64.7% | – | – |
| December | 50.0% | – | – |
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 periods15 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | 0 | 0 | – |
| March | 0 | – | – |
| April | 0 | – | – |
| May | 0 | – | – |
| June | 0 | 0 | – |
| July | 1 | 1 | 0.0% |
| August | 0 | – | – |
| September | – | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 1 | – | – |
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 98.9% 278
- Cancelled 1.1% 3
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
4| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| MDW PHX Chicago Midway International Airport – Phoenix Sky Harbor International Airport | 2,319 | 19.8 min | 68.3% | 41 |
| PHL DEN Philadelphia International Airport – Denver International Airport | 2,501 | 58.7 min | 45.7% | 36 |
| RNO PHX Reno Tahoe International Airport – Phoenix Sky Harbor International Airport | 967 | 28.0 min | 66.7% | 31 |
| PHX IND Phoenix Sky Harbor International Airport – Indianapolis International Airport | 2,390 | 15.7 min | 73.3% | 30 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 12 | 12 | 50.0% | 0 |
| November 2024 | 15 | 15 | 93.3% | 0 |
| December 2024 | 32 | 32 | 65.6% | 0 |
| January 2025 | 7 | 7 | 100.0% | 0 |
| February 2025 | 8 | 8 | 37.5% | 0 |
| March 2025 | 1 | 1 | 100.0% | 0 |
| April 2025 | 3 | 3 | 66.7% | 0 |
| May 2025 | 8 | 8 | 75.0% | 0 |
| June 2025 | 16 | 16 | 37.5% | 0 |
| July 2025 | 18 | 17 | 52.9% | 1 |
| August 2025 | 3 | 3 | 66.7% | 0 |
| October 2025 | 37 | 37 | 64.9% | 0 |
| November 2025 | 17 | 17 | 64.7% | 0 |
| December 2025 | 15 | 14 | 50.0% | 1 |
| January 2026 | 4 | 4 | 75.0% | 0 |
| February 2026 | 5 | 5 | 100.0% | 0 |
| June 2026 | 38 | 38 | 71.1% | 0 |
| July 2026 | 42 | 41 | 58.5% | 1 |