WN1643
WN1643 (Southwest Airlines) is a multi-stop service on 30 routes, busiest Dallas to Tampa. Of 706 departures recorded from October 2024 to July 2026, 70.8% left on time, according to the US BTS.
- On-time departures70.8%of 706 flights
- Average delay18.0 min
- July 202631▲ 0.0%vs July 2025
- Cancelled1.0%
- Legs flown under this number30
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 | 33 | 43 | ▲ 30.3% |
| February | 28 | 28 | 0.0% |
| March | 19 | 31 | ▲ 63.2% |
| April | 24 | 30 | ▲ 25.0% |
| May | 25 | 30 | ▲ 20.0% |
| June | 30 | 30 | 0.0% |
| July | 31 | 31 | 0.0% |
| August | 34 | – | – |
| September | 34 | – | – |
| October | 9 | – | in progress |
| November | 46 | – | – |
| December | 75 | – | – |
| Year to date (Jan–Jul) | 190 | 223 | ▲ 17.4% |
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 | 90.6% | 82.5% | ▼ 9.0% |
| February | 75.0% | 100.0% | ▲ 33.3% |
| March | 89.5% | 87.1% | ▼ 2.6% |
| April | 62.5% | 60.0% | ▼ 4.0% |
| May | 68.0% | 43.3% | ▼ 36.3% |
| June | 56.7% | 66.7% | ▲ 17.6% |
| July | 43.3% | 76.7% | ▲ 76.9% |
| August | 79.4% | – | – |
| September | 85.3% | – | – |
| October | 100.0% | – | in progress |
| November | 87.0% | – | – |
| December | 50.7% | – | – |
| Year-to-date average (Jan–Jul) | 69.4% | 73.8% | ▲ 6.3% |
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 | 3 | ▲ 200.0% |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 1 | 1 | 0.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 2 | 4 | ▲ 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 99.0% 699
- Cancelled 1.0% 7
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 |
|---|---|---|---|---|
| DAL TPA Dallas Love Field – Tampa International Airport | 1,474 | 17.7 min | 72.7% | 155 |
| MDW TPA Chicago Midway International Airport – Tampa International Airport | 1,607 | 41.9 min | 50.0% | 61 |
| CLE BNA Cleveland Hopkins International Airport – Nashville International Airport | 721 | 3.4 min | 96.4% | 58 |
| SJU MCO Luis Munoz Marin International Airport – Orlando International Airport | 1,913 | 18.1 min | 54.4% | 57 |
| OAK DEN Oakland San Francisco Bay Airport – Denver International Airport | 1,537 | 32.6 min | 61.2% | 49 |
| CLE STL Cleveland Hopkins International Airport – St. Louis Lambert International Airport | 783 | 0.2 min | 88.1% | 42 |
| DEN MSY Denver International Airport – Louis Armstrong New Orleans International Airport | 1,708 | 15.8 min | 60.6% | 33 |
| BUR SFO Hollywood Burbank/Bob Hope Airport – San Francisco International Airport | 525 | 11.9 min | 78.8% | 33 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 25 | 25 | 84.0% | 0 |
| November 2024 | 31 | 31 | 61.3% | 0 |
| December 2024 | 39 | 38 | 55.3% | 1 |
| January 2025 | 33 | 32 | 90.6% | 1 |
| February 2025 | 28 | 28 | 75.0% | 0 |
| March 2025 | 19 | 19 | 89.5% | 0 |
| April 2025 | 24 | 24 | 62.5% | 0 |
| May 2025 | 25 | 25 | 68.0% | 0 |
| June 2025 | 30 | 30 | 56.7% | 0 |
| July 2025 | 31 | 30 | 43.3% | 1 |
| August 2025 | 34 | 34 | 79.4% | 0 |
| September 2025 | 34 | 34 | 85.3% | 0 |
| October 2025 | 9 | 9 | 100.0% | 0 |
| November 2025 | 46 | 46 | 87.0% | 0 |
| December 2025 | 75 | 75 | 50.7% | 0 |
| January 2026 | 43 | 40 | 82.5% | 3 |
| February 2026 | 28 | 28 | 100.0% | 0 |
| March 2026 | 31 | 31 | 87.1% | 0 |
| April 2026 | 30 | 30 | 60.0% | 0 |
| May 2026 | 30 | 30 | 43.3% | 0 |
| June 2026 | 30 | 30 | 66.7% | 0 |
| July 2026 | 31 | 30 | 76.7% | 1 |