WN1627
WN1627 (Southwest Airlines) is a multi-stop service on 31 routes, busiest Nashville to Milwaukee. Of 715 departures recorded from October 2024 to July 2026, 73.1% left on time, according to the US BTS.
- On-time departures73.1%of 715 flights
- Average delay15.3 min
- July 202631▲ 19.2%vs July 2025
- Cancelled0.1%
- Legs flown under this number31
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 | 13 | 44 | ▲ 238.5% |
| February | 19 | 42 | ▲ 121.1% |
| March | 29 | 68 | ▲ 134.5% |
| April | 30 | 41 | ▲ 36.7% |
| May | 31 | 35 | ▲ 12.9% |
| June | 26 | 30 | ▲ 15.4% |
| July | 26 | 31 | ▲ 19.2% |
| August | 35 | – | – |
| September | 38 | – | – |
| October | 43 | – | in progress |
| November | 29 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 174 | 291 | ▲ 67.2% |
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 | 92.3% | 84.1% | ▼ 8.9% |
| February | 84.2% | 76.2% | ▼ 9.5% |
| March | 100.0% | 67.2% | ▼ 32.8% |
| April | 90.0% | 85.4% | ▼ 5.1% |
| May | 80.7% | 88.6% | ▲ 9.8% |
| June | 57.7% | 30.0% | ▼ 48.0% |
| July | 57.7% | 58.1% | ▲ 0.6% |
| August | 68.6% | – | – |
| September | 71.1% | – | – |
| October | 58.1% | – | in progress |
| November | 69.0% | – | – |
| December | 77.4% | – | – |
| Year-to-date average (Jan–Jul) | 80.4% | 69.9% | ▼ 13.0% |
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 | 1 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 0 | 1 |
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 99.9% 714
- Cancelled 0.1% 1
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 |
|---|---|---|---|---|
| BNA MKE Nashville International Airport – General Mitchell International Airport | 766 | 12.9 min | 76.4% | 89 |
| HOU BNA William P. Hobby Airport – Nashville International Airport | 1,078 | 9.4 min | 88.3% | 77 |
| IND LAS Indianapolis International Airport – Harry Reid International Airport | 2,553 | 2.8 min | 96.6% | 58 |
| DEN MKE Denver International Airport – General Mitchell International Airport | 1,438 | 26.3 min | 40.4% | 57 |
| MSY STL Louis Armstrong New Orleans International Airport – St. Louis Lambert International Airport | 974 | 23.5 min | 56.9% | 51 |
| PHX SAN Phoenix Sky Harbor International Airport – San Diego International Airport | 489 | 9.7 min | 75.6% | 45 |
| MCO PVD Orlando International Airport – Rhode Island T. F. Green International Airport | 1,728 | 21.2 min | 64.4% | 45 |
| ORF BWI Norfolk International Airport – Baltimore/Washington International Thurgood Marshall Airport | 257 | 23.9 min | 66.7% | 39 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 27 | 27 | 63.0% | 0 |
| November 2024 | 18 | 18 | 94.4% | 0 |
| December 2024 | 29 | 29 | 75.9% | 0 |
| January 2025 | 13 | 13 | 92.3% | 0 |
| February 2025 | 19 | 19 | 84.2% | 0 |
| March 2025 | 29 | 29 | 100.0% | 0 |
| April 2025 | 30 | 30 | 90.0% | 0 |
| May 2025 | 31 | 31 | 80.7% | 0 |
| June 2025 | 26 | 26 | 57.7% | 0 |
| July 2025 | 26 | 26 | 57.7% | 0 |
| August 2025 | 35 | 35 | 68.6% | 0 |
| September 2025 | 38 | 38 | 71.1% | 0 |
| October 2025 | 43 | 43 | 58.1% | 0 |
| November 2025 | 29 | 29 | 69.0% | 0 |
| December 2025 | 31 | 31 | 77.4% | 0 |
| January 2026 | 44 | 44 | 84.1% | 0 |
| February 2026 | 42 | 42 | 76.2% | 0 |
| March 2026 | 68 | 67 | 67.2% | 1 |
| April 2026 | 41 | 41 | 85.4% | 0 |
| May 2026 | 35 | 35 | 88.6% | 0 |
| June 2026 | 30 | 30 | 30.0% | 0 |
| July 2026 | 31 | 31 | 58.1% | 0 |