WN4203
WN4203 (Southwest Airlines) is a multi-stop service on 12 routes, busiest Phoenix to Dallas. Of 380 departures recorded from October 2024 to July 2026, 73.2% left on time, according to the US BTS.
- On-time departures73.2%of 380 flights
- Average delay16.2 min
- July 202618
- Cancelled0.8%
- Legs flown under this number12
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 | 2 | 43 | ▲ 2,050.0% |
| February | 10 | 34 | ▲ 240.0% |
| March | 24 | 29 | ▲ 20.8% |
| April | 29 | 34 | ▲ 17.2% |
| May | 31 | 34 | ▲ 9.7% |
| June | 4 | 21 | ▲ 425.0% |
| July | – | 18 | – |
| August | – | – | – |
| September | – | – | – |
| October | 30 | – | in progress |
| November | 1 | – | – |
| December | – | – | – |
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 | 50.0% | 90.7% | ▲ 81.4% |
| February | 55.6% | 79.4% | ▲ 42.9% |
| March | 69.6% | 79.3% | ▲ 14.0% |
| April | 72.4% | 91.2% | ▲ 25.9% |
| May | 70.0% | 76.5% | ▲ 9.2% |
| June | 50.0% | 33.3% | ▼ 33.3% |
| July | – | 27.8% | – |
| August | – | – | – |
| September | – | – | – |
| October | 76.7% | – | in progress |
| November | 100.0% | – | – |
| December | – | – | – |
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 | 1 | 0 | ▼ 100.0% |
| March | 1 | 0 | ▼ 100.0% |
| April | 0 | 0 | – |
| May | 1 | 0 | ▼ 100.0% |
| June | 0 | 0 | – |
| July | – | 0 | – |
| August | – | – | – |
| September | – | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | – | – | – |
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 99.2% 377
- Cancelled 0.8% 3
Share of all recorded flights in the period, all legs. · Oct 14, 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 DAL Phoenix Sky Harbor International Airport – Dallas Love Field | 1,412 | 9.7 min | 85.9% | 78 |
| LAS ORD Harry Reid International Airport – Chicago O'Hare International Airport | 2,432 | 9.6 min | 81.0% | 58 |
| BNA MSY Nashville International Airport – Louis Armstrong New Orleans International Airport | 759 | 15.9 min | 70.2% | 58 |
| PHX MDW Phoenix Sky Harbor International Airport – Chicago Midway International Airport | 2,319 | 16.7 min | 71.7% | 54 |
| PHX HOU Phoenix Sky Harbor International Airport – William P. Hobby Airport | 1,638 | 50.2 min | 20.6% | 34 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 13 | 13 | 84.6% | 0 |
| November 2024 | 16 | 16 | 75.0% | 0 |
| December 2024 | 7 | 7 | 71.4% | 0 |
| January 2025 | 2 | 2 | 50.0% | 0 |
| February 2025 | 10 | 9 | 55.6% | 1 |
| March 2025 | 24 | 23 | 69.6% | 1 |
| April 2025 | 29 | 29 | 72.4% | 0 |
| May 2025 | 31 | 30 | 70.0% | 1 |
| June 2025 | 4 | 4 | 50.0% | 0 |
| October 2025 | 30 | 30 | 76.7% | 0 |
| November 2025 | 1 | 1 | 100.0% | 0 |
| January 2026 | 43 | 43 | 90.7% | 0 |
| February 2026 | 34 | 34 | 79.4% | 0 |
| March 2026 | 29 | 29 | 79.3% | 0 |
| April 2026 | 34 | 34 | 91.2% | 0 |
| May 2026 | 34 | 34 | 76.5% | 0 |
| June 2026 | 21 | 21 | 33.3% | 0 |
| July 2026 | 18 | 18 | 27.8% | 0 |