WN4070
WN4070 (Southwest Airlines) is a multi-stop service on 16 routes, busiest Phoenix to Chicago. Of 221 departures recorded from October 2024 to July 2026, 71.8% left on time, according to the US BTS.
- On-time departures71.8%of 221 flights
- Average delay20.0 min
- July 202612▼ 33.3%vs July 2025
- Cancelled0.5%
- Legs flown under this number16
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods17 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 1 | 2 | ▲ 100.0% |
| February | 2 | 3 | ▲ 50.0% |
| March | 1 | 27 | ▲ 2,600.0% |
| April | – | 6 | – |
| May | 1 | – | – |
| June | 16 | 4 | ▼ 75.0% |
| July | 18 | 12 | ▼ 33.3% |
| August | 30 | – | – |
| September | 30 | – | – |
| October | 14 | – | in progress |
| November | 21 | – | – |
| December | 19 | – | – |
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 periods17 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 0.0% | 50.0% | – |
| February | 50.0% | 100.0% | ▲ 100.0% |
| March | 100.0% | 70.4% | ▼ 29.6% |
| April | – | 66.7% | – |
| May | 100.0% | – | – |
| June | 81.3% | 75.0% | ▼ 7.7% |
| July | 61.1% | 75.0% | ▲ 22.7% |
| August | 76.7% | – | – |
| September | 66.7% | – | – |
| October | 92.9% | – | in progress |
| November | 80.0% | – | – |
| December | 47.4% | – | – |
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 periods17 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | – | 0 | – |
| May | 0 | – | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 1 | – | – |
| 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 99.5% 220
- Cancelled 0.5% 1
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 |
|---|---|---|---|---|
| PHX ORD Phoenix Sky Harbor International Airport – Chicago O'Hare International Airport | 2,313 | 28.3 min | 74.1% | 58 |
| PHX DEN Phoenix Sky Harbor International Airport – Denver International Airport | 968 | 29.2 min | 62.5% | 41 |
| OAK SAN Oakland San Francisco Bay Airport – San Diego International Airport | 718 | 11.6 min | 66.7% | 36 |
| OAK OGG Oakland San Francisco Bay Airport – Kahului International Airport | 3,777 | 20.9 min | 69.7% | 33 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 10 | 10 | 80.0% | 0 |
| November 2024 | 2 | 2 | 100.0% | 0 |
| December 2024 | 2 | 2 | 50.0% | 0 |
| January 2025 | 1 | 1 | 0.0% | 0 |
| February 2025 | 2 | 2 | 50.0% | 0 |
| March 2025 | 1 | 1 | 100.0% | 0 |
| May 2025 | 1 | 1 | 100.0% | 0 |
| June 2025 | 16 | 16 | 81.3% | 0 |
| July 2025 | 18 | 18 | 61.1% | 0 |
| August 2025 | 30 | 30 | 76.7% | 0 |
| September 2025 | 30 | 30 | 66.7% | 0 |
| October 2025 | 14 | 14 | 92.9% | 0 |
| November 2025 | 21 | 20 | 80.0% | 1 |
| December 2025 | 19 | 19 | 47.4% | 0 |
| January 2026 | 2 | 2 | 50.0% | 0 |
| February 2026 | 3 | 3 | 100.0% | 0 |
| March 2026 | 27 | 27 | 70.4% | 0 |
| April 2026 | 6 | 6 | 66.7% | 0 |
| June 2026 | 4 | 4 | 75.0% | 0 |
| July 2026 | 12 | 12 | 75.0% | 0 |