WN3739
WN3739 (Southwest Airlines) is a multi-stop service on 21 routes, busiest Phoenix to Atlanta. Of 412 departures recorded from October 2024 to July 2026, 68.7% left on time, according to the US BTS.
- On-time departures68.7%of 412 flights
- Average delay13.7 min
- July 202630▲ 57.9%vs July 2025
- Cancelled1.5%
- Legs flown under this number21
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 | 9 | 2 | ▼ 77.8% |
| February | 9 | – | – |
| March | 28 | 27 | ▼ 3.6% |
| April | 19 | 30 | ▲ 57.9% |
| May | 18 | 31 | ▲ 72.2% |
| June | 16 | 30 | ▲ 87.5% |
| July | 19 | 30 | ▲ 57.9% |
| August | 29 | – | – |
| September | 30 | – | – |
| October | 19 | – | in progress |
| November | 4 | – | – |
| December | 11 | – | – |
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 | 88.9% | 100.0% | ▲ 12.5% |
| February | 88.9% | – | – |
| March | 67.9% | 33.3% | ▼ 50.9% |
| April | 79.0% | 63.3% | ▼ 19.8% |
| May | 33.3% | 61.3% | ▲ 83.9% |
| June | 62.5% | 70.0% | ▲ 12.0% |
| July | 63.2% | 73.3% | ▲ 16.1% |
| August | 82.8% | – | – |
| September | 80.0% | – | – |
| October | 68.4% | – | in progress |
| November | 75.0% | – | – |
| December | 45.5% | – | – |
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 | 0 | – |
| February | 0 | – | – |
| March | 0 | 6 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| 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 98.5% 406
- Cancelled 1.5% 6
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
7| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| PHX ATL Phoenix Sky Harbor International Airport – Hartsfield Jackson Atlanta International Airport | 2,549 | 13.9 min | 63.8% | 58 |
| HOU LAS William P. Hobby Airport – Harry Reid International Airport | 1,985 | 5.3 min | 82.8% | 58 |
| SLC DEN Salt Lake City International Airport – Denver International Airport | 628 | 11.3 min | 73.5% | 49 |
| DEN SFO Denver International Airport – San Francisco International Airport | 1,553 | 14.7 min | 61.8% | 34 |
| RNO LAS Reno Tahoe International Airport – Harry Reid International Airport | 556 | 15.5 min | 69.7% | 33 |
| MDW BWI Chicago Midway International Airport – Baltimore/Washington International Thurgood Marshall Airport | 981 | 27.8 min | 50.0% | 32 |
| DEN SAN Denver International Airport – San Diego International Airport | 1,371 | 4.6 min | 83.3% | 30 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 7 | 7 | 85.7% | 0 |
| November 2024 | 29 | 29 | 75.9% | 0 |
| December 2024 | 15 | 15 | 93.3% | 0 |
| January 2025 | 9 | 9 | 88.9% | 0 |
| February 2025 | 9 | 9 | 88.9% | 0 |
| March 2025 | 28 | 28 | 67.9% | 0 |
| April 2025 | 19 | 19 | 79.0% | 0 |
| May 2025 | 18 | 18 | 33.3% | 0 |
| June 2025 | 16 | 16 | 62.5% | 0 |
| July 2025 | 19 | 19 | 63.2% | 0 |
| August 2025 | 29 | 29 | 82.8% | 0 |
| September 2025 | 30 | 30 | 80.0% | 0 |
| October 2025 | 19 | 19 | 68.4% | 0 |
| November 2025 | 4 | 4 | 75.0% | 0 |
| December 2025 | 11 | 11 | 45.5% | 0 |
| January 2026 | 2 | 2 | 100.0% | 0 |
| March 2026 | 27 | 21 | 33.3% | 6 |
| April 2026 | 30 | 30 | 63.3% | 0 |
| May 2026 | 31 | 31 | 61.3% | 0 |
| June 2026 | 30 | 30 | 70.0% | 0 |
| July 2026 | 30 | 30 | 73.3% | 0 |