WN1623
WN1623 (Southwest Airlines) is a multi-stop service on 30 routes, busiest Dallas to Nashville. Of 672 departures recorded from October 2024 to July 2026, 73.4% left on time, according to the US BTS.
- On-time departures73.4%of 672 flights
- Average delay15.6 min
- July 202613▼ 56.7%vs July 2025
- Cancelled1.5%
- Legs flown under this number30
according to the US BTS · Oct 12, 2024 → Jul 29, 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 | 29 | 31 | ▲ 6.9% |
| February | 24 | 28 | ▲ 16.7% |
| March | 26 | 31 | ▲ 19.2% |
| April | 26 | 35 | ▲ 34.6% |
| May | 28 | 39 | ▲ 39.3% |
| June | 29 | 17 | ▼ 41.4% |
| July | 30 | 13 | ▼ 56.7% |
| August | 52 | – | – |
| September | 52 | – | – |
| October | 33 | – | in progress |
| November | 27 | – | – |
| December | 32 | – | – |
| Year to date (Jan–Jul) | 192 | 194 | ▲ 1.0% |
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 | 85.2% | 69.0% | ▼ 19.0% |
| February | 95.7% | 65.4% | ▼ 31.6% |
| March | 80.8% | 46.7% | ▼ 42.2% |
| April | 80.8% | 48.6% | ▼ 39.9% |
| May | 64.3% | 64.1% | ▼ 0.3% |
| June | 51.7% | 58.8% | ▲ 13.7% |
| July | 56.7% | 61.5% | ▲ 8.6% |
| August | 75.0% | – | – |
| September | 80.8% | – | – |
| October | 84.4% | – | in progress |
| November | 96.2% | – | – |
| December | 93.8% | – | – |
| Year-to-date average (Jan–Jul) | 73.6% | 59.1% | ▼ 19.6% |
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 | 2 | 0.0% |
| February | 1 | 2 | ▲ 100.0% |
| March | 0 | 1 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 1 | – | in progress |
| November | 1 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 3 | 5 | ▲ 66.7% |
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 98.5% 662
- Cancelled 1.5% 10
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → Jul 29, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
99 of 9
| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| DAL BNA Dallas Love Field – Nashville International Airport | 1,000 | 3.9 min | 94.4% | 74 |
| LAX SMF Los Angeles International Airport – Sacramento International Airport | 600 | 29.0 min | 50.0% | 60 |
| MCI MDW Kansas City International Airport – Chicago Midway International Airport | 650 | 4.9 min | 94.7% | 58 |
| HOU LGA William P. Hobby Airport – LaGuardia Airport | 2,295 | 18.6 min | 64.8% | 58 |
| BWI DEN Baltimore/Washington International Thurgood Marshall Airport – Denver International Airport | 2,394 | 12.4 min | 76.0% | 50 |
| BWI ALB Baltimore/Washington International Thurgood Marshall Airport – Albany International Airport | 464 | 19.0 min | 72.0% | 50 |
| STL DAL St. Louis Lambert International Airport – Dallas Love Field | 878 | 16.8 min | 71.0% | 31 |
| DAL MSY Dallas Love Field – Louis Armstrong New Orleans International Airport | 700 | 28.0 min | 48.4% | 31 |
| BUR SMF Hollywood Burbank/Bob Hope Airport – Sacramento International Airport | 577 | 2.1 min | 83.3% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 13 | 13 | 92.3% | 0 |
| November 2024 | 42 | 42 | 81.0% | 0 |
| December 2024 | 35 | 35 | 82.9% | 0 |
| January 2025 | 29 | 27 | 85.2% | 2 |
| February 2025 | 24 | 23 | 95.7% | 1 |
| March 2025 | 26 | 26 | 80.8% | 0 |
| April 2025 | 26 | 26 | 80.8% | 0 |
| May 2025 | 28 | 28 | 64.3% | 0 |
| June 2025 | 29 | 29 | 51.7% | 0 |
| July 2025 | 30 | 30 | 56.7% | 0 |
| August 2025 | 52 | 52 | 75.0% | 0 |
| September 2025 | 52 | 52 | 80.8% | 0 |
| October 2025 | 33 | 32 | 84.4% | 1 |
| November 2025 | 27 | 26 | 96.2% | 1 |
| December 2025 | 32 | 32 | 93.8% | 0 |
| January 2026 | 31 | 29 | 69.0% | 2 |
| February 2026 | 28 | 26 | 65.4% | 2 |
| March 2026 | 31 | 30 | 46.7% | 1 |
| April 2026 | 35 | 35 | 48.6% | 0 |
| May 2026 | 39 | 39 | 64.1% | 0 |
| June 2026 | 17 | 17 | 58.8% | 0 |
| July 2026 | 13 | 13 | 61.5% | 0 |