WN3788
WN3788 (Southwest Airlines) is a multi-stop service on 21 routes, busiest Miami to Atlanta. Of 556 departures recorded from October 2024 to July 2026, 74.8% left on time, according to the US BTS.
- On-time departures74.8%of 556 flights
- Average delay13.7 min
- July 202631▲ 0.0%vs July 2025
- Cancelled0.9%
- Legs flown under this number21
according to the US BTS · Oct 12, 2024 → Jul 31, 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 | 30 | 5 | ▼ 83.3% |
| February | 28 | 4 | ▼ 85.7% |
| March | 31 | 27 | ▼ 12.9% |
| April | 19 | 27 | ▲ 42.1% |
| May | 17 | 27 | ▲ 58.8% |
| June | 28 | 30 | ▲ 7.1% |
| July | 31 | 31 | 0.0% |
| August | 49 | – | – |
| September | 52 | – | – |
| October | 14 | – | in progress |
| November | 29 | – | – |
| December | 17 | – | – |
| Year to date (Jan–Jul) | 184 | 151 | ▼ 17.9% |
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 | 86.2% | 80.0% | ▼ 7.2% |
| February | 78.6% | 50.0% | ▼ 36.4% |
| March | 83.9% | 70.4% | ▼ 16.1% |
| April | 89.5% | 66.7% | ▼ 25.5% |
| May | 47.1% | 55.6% | ▲ 18.1% |
| June | 89.3% | 60.0% | ▼ 32.8% |
| July | 87.1% | 51.6% | ▼ 40.7% |
| August | 62.5% | – | – |
| September | 75.0% | – | – |
| October | 85.7% | – | in progress |
| November | 89.3% | – | – |
| December | 68.8% | – | – |
| Year-to-date average (Jan–Jul) | 80.2% | 62.0% | ▼ 22.7% |
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 | 1 | 0 | ▼ 100.0% |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 1 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 1 | – | – |
| December | 1 | – | – |
| 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 99.1% 551
- Cancelled 0.9% 5
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
88 of 8
| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| MIA ATL Miami International Airport – Hartsfield Jackson Atlanta International Airport | 959 | 8.9 min | 85.1% | 116 |
| ONT MDW Ontario International Airport – Chicago Midway International Airport | 2,740 | 6.9 min | 88.5% | 61 |
| SMF LAS Sacramento International Airport – Harry Reid International Airport | 639 | 32.2 min | 53.5% | 58 |
| MHT BWI Manchester-Boston Regional Airport – Baltimore/Washington International Thurgood Marshall Airport | 606 | 3.3 min | 92.0% | 50 |
| PHX DEN Phoenix Sky Harbor International Airport – Denver International Airport | 968 | 19.4 min | 61.2% | 49 |
| MAF HOU Midland International Air and Space Port – William P. Hobby Airport | 709 | 13.4 min | 69.7% | 33 |
| ECP MDW Northwest Florida Beaches International Airport – Chicago Midway International Airport | 1,283 | 21.6 min | 67.7% | 31 |
| MDW STL Chicago Midway International Airport – St. Louis Lambert International Airport | 404 | 15.1 min | 82.1% | 30 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 6 | 6 | 83.3% | 0 |
| November 2024 | 26 | 26 | 96.2% | 0 |
| December 2024 | 28 | 27 | 85.2% | 1 |
| January 2025 | 30 | 29 | 86.2% | 1 |
| February 2025 | 28 | 28 | 78.6% | 0 |
| March 2025 | 31 | 31 | 83.9% | 0 |
| April 2025 | 19 | 19 | 89.5% | 0 |
| May 2025 | 17 | 17 | 47.1% | 0 |
| June 2025 | 28 | 28 | 89.3% | 0 |
| July 2025 | 31 | 31 | 87.1% | 0 |
| August 2025 | 49 | 48 | 62.5% | 1 |
| September 2025 | 52 | 52 | 75.0% | 0 |
| October 2025 | 14 | 14 | 85.7% | 0 |
| November 2025 | 29 | 28 | 89.3% | 1 |
| December 2025 | 17 | 16 | 68.8% | 1 |
| January 2026 | 5 | 5 | 80.0% | 0 |
| February 2026 | 4 | 4 | 50.0% | 0 |
| March 2026 | 27 | 27 | 70.4% | 0 |
| April 2026 | 27 | 27 | 66.7% | 0 |
| May 2026 | 27 | 27 | 55.6% | 0 |
| June 2026 | 30 | 30 | 60.0% | 0 |
| July 2026 | 31 | 31 | 51.6% | 0 |