WN1943
WN1943 (Southwest Airlines) is a multi-stop service on 29 routes, busiest Chicago to Las Vegas. Of 673 departures recorded from October 2024 to July 2026, 76.7% left on time, according to the US BTS.
- On-time departures76.7%of 673 flights
- Average delay10.0 min
- July 202622▼ 50.0%vs July 2025
- Cancelled1.8%
- Legs flown under this number29
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 | 32 | 4 | ▼ 87.5% |
| February | 23 | 10 | ▼ 56.5% |
| March | 26 | 28 | ▲ 7.7% |
| April | 52 | 30 | ▼ 42.3% |
| May | 62 | 31 | ▼ 50.0% |
| June | 45 | 23 | ▼ 48.9% |
| July | 44 | 22 | ▼ 50.0% |
| August | 30 | – | – |
| September | 26 | – | – |
| October | 55 | – | in progress |
| November | 30 | – | – |
| December | 29 | – | – |
| Year to date (Jan–Jul) | 284 | 148 | ▼ 47.9% |
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 | 90.6% | 100.0% | ▲ 10.3% |
| February | 90.9% | 100.0% | ▲ 10.0% |
| March | 92.3% | 74.1% | ▼ 19.8% |
| April | 88.0% | 100.0% | ▲ 13.6% |
| May | 80.3% | 93.6% | ▲ 16.5% |
| June | 66.7% | 78.3% | ▲ 17.4% |
| July | 79.6% | 95.5% | ▲ 20.0% |
| August | 53.3% | – | – |
| September | 48.0% | – | – |
| October | 43.6% | – | in progress |
| November | 74.1% | – | – |
| December | 48.3% | – | – |
| Year-to-date average (Jan–Jul) | 84.1% | 91.6% | ▲ 9.0% |
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 | 1 | 0 | ▼ 100.0% |
| March | 0 | 1 | – |
| April | 2 | 0 | ▼ 100.0% |
| May | 1 | 0 | ▼ 100.0% |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 1 | – | – |
| October | 0 | – | in progress |
| November | 3 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 4 | 1 | ▼ 75.0% |
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 98.2% 661
- Cancelled 1.8% 12
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 |
|---|---|---|---|---|
| MDW LAS Chicago Midway International Airport – Harry Reid International Airport | 2,442 | 6.6 min | 85.1% | 96 |
| OMA PHX Eppley Airfield – Phoenix Sky Harbor International Airport | 1,667 | 15.2 min | 59.0% | 61 |
| BWI TPA Baltimore/Washington International Thurgood Marshall Airport – Tampa International Airport | 1,358 | 19.0 min | 60.7% | 59 |
| BWI AUS Baltimore/Washington International Thurgood Marshall Airport – Austin Bergstrom International Airport | 2,156 | -0.3 min | 96.6% | 58 |
| SAT DAL San Antonio International Airport – Dallas Love Field | 399 | 6.0 min | 89.8% | 50 |
| LAS HOU Harry Reid International Airport – William P. Hobby Airport | 1,985 | 24.3 min | 49.0% | 50 |
| HOU ABQ William P. Hobby Airport – Albuquerque International Sunport | 1,221 | 1.7 min | 94.1% | 34 |
| BNA BDL Nashville International Airport – Bradley International Airport | 1,368 | 9.3 min | 78.1% | 33 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 19 | 17 | 100.0% | 2 |
| November 2024 | 25 | 24 | 87.5% | 1 |
| December 2024 | 27 | 27 | 74.1% | 0 |
| January 2025 | 32 | 32 | 90.6% | 0 |
| February 2025 | 23 | 22 | 90.9% | 1 |
| March 2025 | 26 | 26 | 92.3% | 0 |
| April 2025 | 52 | 50 | 88.0% | 2 |
| May 2025 | 62 | 61 | 80.3% | 1 |
| June 2025 | 45 | 45 | 66.7% | 0 |
| July 2025 | 44 | 44 | 79.6% | 0 |
| August 2025 | 30 | 30 | 53.3% | 0 |
| September 2025 | 26 | 25 | 48.0% | 1 |
| October 2025 | 55 | 55 | 43.6% | 0 |
| November 2025 | 30 | 27 | 74.1% | 3 |
| December 2025 | 29 | 29 | 48.3% | 0 |
| January 2026 | 4 | 4 | 100.0% | 0 |
| February 2026 | 10 | 10 | 100.0% | 0 |
| March 2026 | 28 | 27 | 74.1% | 1 |
| April 2026 | 30 | 30 | 100.0% | 0 |
| May 2026 | 31 | 31 | 93.6% | 0 |
| June 2026 | 23 | 23 | 78.3% | 0 |
| July 2026 | 22 | 22 | 95.5% | 0 |