WN1647
WN1647 (Southwest Airlines) is a multi-stop service on 37 routes, busiest Nashville to Chicago. Of 727 departures recorded from October 2024 to July 2026, 76.3% left on time, according to the US BTS.
- On-time departures76.3%of 727 flights
- Average delay11.3 min
- July 20265▼ 83.3%vs July 2025
- Cancelled0.8%
- Legs flown under this number37
according to the US BTS · Oct 12, 2024 → Jul 26, 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 | 33 | 33 | 0.0% |
| February | 28 | 31 | ▲ 10.7% |
| March | 22 | 31 | ▲ 40.9% |
| April | 22 | 40 | ▲ 81.8% |
| May | 22 | 44 | ▲ 100.0% |
| June | 29 | 7 | ▼ 75.9% |
| July | 30 | 5 | ▼ 83.3% |
| August | 58 | – | – |
| September | 61 | – | – |
| October | 33 | – | in progress |
| November | 50 | – | – |
| December | 52 | – | – |
| Year to date (Jan–Jul) | 186 | 191 | ▲ 2.7% |
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 | 87.1% | 93.9% | ▲ 7.9% |
| February | 78.6% | 71.4% | ▼ 9.1% |
| March | 95.5% | 100.0% | ▲ 4.8% |
| April | 95.5% | 50.0% | ▼ 47.6% |
| May | 90.9% | 52.3% | ▼ 42.5% |
| June | 75.9% | 28.6% | ▼ 62.3% |
| July | 66.7% | 40.0% | ▼ 40.0% |
| August | 81.0% | – | – |
| September | 82.0% | – | – |
| October | 84.9% | – | in progress |
| November | 84.0% | – | – |
| December | 56.9% | – | – |
| Year-to-date average (Jan–Jul) | 84.3% | 62.3% | ▼ 26.1% |
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 | 2 | 0 | ▼ 100.0% |
| February | 0 | 3 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 1 | – | – |
| Year to date (Jan–Jul) | 2 | 3 | ▲ 50.0% |
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 99.2% 721
- Cancelled 0.8% 6
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 26, 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 MDW Nashville International Airport – Chicago Midway International Airport | 636 | 13.6 min | 73.2% | 82 |
| PHX ORD Phoenix Sky Harbor International Airport – Chicago O'Hare International Airport | 2,313 | 32.0 min | 51.8% | 56 |
| PHX HOU Phoenix Sky Harbor International Airport – William P. Hobby Airport | 1,638 | 8.6 min | 78.4% | 51 |
| BUR SMF Hollywood Burbank/Bob Hope Airport – Sacramento International Airport | 577 | 2.8 min | 87.0% | 47 |
| BWI CMH Baltimore/Washington International Thurgood Marshall Airport – John Glenn Columbus International Airport | 541 | 6.4 min | 77.8% | 45 |
| SAT PHX San Antonio International Airport – Phoenix Sky Harbor International Airport | 1,354 | 1.1 min | 93.0% | 43 |
| MHT BWI Manchester-Boston Regional Airport – Baltimore/Washington International Thurgood Marshall Airport | 606 | -7.4 min | 97.0% | 33 |
| RNO BUR Reno Tahoe International Airport – Hollywood Burbank/Bob Hope Airport | 602 | 7.6 min | 83.9% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 22 | 22 | 86.4% | 0 |
| November 2024 | 41 | 41 | 78.1% | 0 |
| December 2024 | 33 | 33 | 63.6% | 0 |
| January 2025 | 33 | 31 | 87.1% | 2 |
| February 2025 | 28 | 28 | 78.6% | 0 |
| March 2025 | 22 | 22 | 95.5% | 0 |
| April 2025 | 22 | 22 | 95.5% | 0 |
| May 2025 | 22 | 22 | 90.9% | 0 |
| June 2025 | 29 | 29 | 75.9% | 0 |
| July 2025 | 30 | 30 | 66.7% | 0 |
| August 2025 | 58 | 58 | 81.0% | 0 |
| September 2025 | 61 | 61 | 82.0% | 0 |
| October 2025 | 33 | 33 | 84.9% | 0 |
| November 2025 | 50 | 50 | 84.0% | 0 |
| December 2025 | 52 | 51 | 56.9% | 1 |
| January 2026 | 33 | 33 | 93.9% | 0 |
| February 2026 | 31 | 28 | 71.4% | 3 |
| March 2026 | 31 | 31 | 100.0% | 0 |
| April 2026 | 40 | 40 | 50.0% | 0 |
| May 2026 | 44 | 44 | 52.3% | 0 |
| June 2026 | 7 | 7 | 28.6% | 0 |
| July 2026 | 5 | 5 | 40.0% | 0 |