WN3970
WN3970 (Southwest Airlines) is a multi-stop service on 24 routes, busiest Phoenix to Chicago. Of 614 departures recorded from October 2024 to July 2026, 77.2% left on time, according to the US BTS.
- On-time departures77.2%of 614 flights
- Average delay11.2 min
- July 202616▼ 57.9%vs July 2025
- Cancelled0.7%
- Legs flown under this number24
according to the US BTS · Oct 12, 2024 → Jul 29, 2026 domestic flights only
Recorded departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
All legs under this number combined; see the leg table.
The most recent periods19 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 13 | 26 | ▲ 100.0% |
| February | 15 | 16 | ▲ 6.7% |
| March | 24 | 15 | ▼ 37.5% |
| April | 29 | 27 | ▼ 6.9% |
| May | 31 | 30 | ▼ 3.2% |
| June | 38 | 18 | ▼ 52.6% |
| July | 38 | 16 | ▼ 57.9% |
| August | 33 | – | – |
| September | 30 | – | – |
| October | 6 | – | in progress |
| November | 58 | – | – |
| December | 56 | – | – |
| Year to date (Jan–Jul) | 188 | 148 | ▼ 21.3% |
according to the US BTS · October 2024 → July 2026
On-time departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.
The most recent periods19 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 38.5% | 76.9% | ▲ 100.0% |
| February | 53.3% | 68.8% | ▲ 28.9% |
| March | 70.8% | 66.7% | ▼ 5.9% |
| April | 69.0% | 96.3% | ▲ 39.6% |
| May | 67.7% | 100.0% | ▲ 47.6% |
| June | 86.8% | 77.8% | ▼ 10.4% |
| July | 83.8% | 43.8% | ▼ 47.8% |
| August | 97.0% | – | – |
| September | 100.0% | – | – |
| October | 83.3% | – | in progress |
| November | 76.4% | – | – |
| December | 73.2% | – | – |
| Year-to-date average (Jan–Jul) | 67.1% | 75.7% | ▲ 12.8% |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
Partial coverage: domestic flights only · 22 of 22 periods have data
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
Partial coverage: domestic flights only · 22 of 22 periods have data
The most recent periods19 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 1 | 0 | ▼ 100.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 3 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 1 | 0 | ▼ 100.0% |
according to the US BTS · October 2024 → July 2026
This is not a forecast
This is a historical record of departures already flown, not a forecast for your flight.
This number flies several legs
Several legs: the headline figure averages all of them. See the leg table.
Cancellation share
- Not cancelled 99.3% 610
- Cancelled 0.7% 4
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 29, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
88 of 8
| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| PHX ORD Phoenix Sky Harbor International Airport – Chicago O'Hare International Airport | 2,313 | 24.6 min | 53.1% | 81 |
| SAN PHX San Diego International Airport – Phoenix Sky Harbor International Airport | 489 | 8.5 min | 78.3% | 60 |
| MKE BWI General Mitchell International Airport – Baltimore/Washington International Thurgood Marshall Airport | 1,030 | 10.0 min | 86.4% | 60 |
| PHX MCI Phoenix Sky Harbor International Airport – Kansas City International Airport | 1,677 | 19.4 min | 67.2% | 58 |
| ORD MCO Chicago O'Hare International Airport – Orlando International Airport | 1,620 | -2.7 min | 100.0% | 58 |
| PVD MCO Rhode Island T. F. Green International Airport – Orlando International Airport | 1,728 | -3.0 min | 100.0% | 57 |
| PHX LAS Phoenix Sky Harbor International Airport – Harry Reid International Airport | 411 | 6.1 min | 81.6% | 41 |
| STL OMA St. Louis Lambert International Airport – Eppley Airfield | 549 | 14.4 min | 71.4% | 35 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 19 | 19 | 89.5% | 0 |
| November 2024 | 34 | 34 | 64.7% | 0 |
| December 2024 | 42 | 42 | 69.1% | 0 |
| January 2025 | 13 | 13 | 38.5% | 0 |
| February 2025 | 15 | 15 | 53.3% | 0 |
| March 2025 | 24 | 24 | 70.8% | 0 |
| April 2025 | 29 | 29 | 69.0% | 0 |
| May 2025 | 31 | 31 | 67.7% | 0 |
| June 2025 | 38 | 38 | 86.8% | 0 |
| July 2025 | 38 | 37 | 83.8% | 1 |
| August 2025 | 33 | 33 | 97.0% | 0 |
| September 2025 | 30 | 30 | 100.0% | 0 |
| October 2025 | 6 | 6 | 83.3% | 0 |
| November 2025 | 58 | 55 | 76.4% | 3 |
| December 2025 | 56 | 56 | 73.2% | 0 |
| January 2026 | 26 | 26 | 76.9% | 0 |
| February 2026 | 16 | 16 | 68.8% | 0 |
| March 2026 | 15 | 15 | 66.7% | 0 |
| April 2026 | 27 | 27 | 96.3% | 0 |
| May 2026 | 30 | 30 | 100.0% | 0 |
| June 2026 | 18 | 18 | 77.8% | 0 |
| July 2026 | 16 | 16 | 43.8% | 0 |