WN574
WN574 (Southwest Airlines) is a multi-stop service on 40 routes, busiest Washington to Chicago. Of 840 departures recorded from October 2024 to July 2026, 75.9% left on time, according to the US BTS.
- On-time departures75.9%of 840 flights
- Average delay13.0 min
- July 202631▼ 34.0%vs July 2025
- Cancelled1.8%
- Legs flown under this number40
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 | 62 | 31 | ▼ 50.0% |
| February | 51 | 25 | ▼ 51.0% |
| March | 55 | 62 | ▲ 12.7% |
| April | 36 | 34 | ▼ 5.6% |
| May | 32 | 28 | ▼ 12.5% |
| June | 38 | 30 | ▼ 21.1% |
| July | 47 | 31 | ▼ 34.0% |
| August | 30 | – | – |
| September | 30 | – | – |
| October | 40 | – | in progress |
| November | 28 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 321 | 241 | ▼ 24.9% |
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 | 80.0% | 85.7% | ▲ 7.1% |
| February | 86.0% | 60.0% | ▼ 30.2% |
| March | 83.6% | 72.1% | ▼ 13.8% |
| April | 58.8% | 79.4% | ▲ 35.0% |
| May | 53.1% | 59.3% | ▲ 11.5% |
| June | 60.0% | 93.3% | ▲ 55.6% |
| July | 80.9% | 96.7% | ▲ 19.6% |
| August | 66.7% | – | – |
| September | 60.0% | – | – |
| October | 57.5% | – | in progress |
| November | 75.0% | – | – |
| December | 87.1% | – | – |
| Year-to-date average (Jan–Jul) | 71.8% | 78.1% | ▲ 8.8% |
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 | 3 | ▲ 50.0% |
| February | 1 | 0 | ▼ 100.0% |
| March | 0 | 1 | – |
| April | 2 | 0 | ▼ 100.0% |
| May | 0 | 1 | – |
| June | 3 | 0 | ▼ 100.0% |
| July | 0 | 1 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 8 | 6 | ▼ 25.0% |
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% 825
- Cancelled 1.8% 15
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
99 of 9
| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| DCA MDW Ronald Reagan Washington National Airport – Chicago Midway International Airport | 964 | 2.8 min | 90.5% | 98 |
| HNL OGG Daniel K. Inouye International Airport – Kahului International Airport | 162 | -3.5 min | 98.3% | 58 |
| BNA MSY Nashville International Airport – Louis Armstrong New Orleans International Airport | 759 | 14.1 min | 71.2% | 55 |
| DAL LAS Dallas Love Field – Harry Reid International Airport | 1,714 | 21.3 min | 63.3% | 50 |
| RNO PHX Reno Tahoe International Airport – Phoenix Sky Harbor International Airport | 967 | 15.5 min | 82.2% | 45 |
| MCO BWI Orlando International Airport – Baltimore/Washington International Thurgood Marshall Airport | 1,269 | 16.8 min | 80.0% | 43 |
| PHX HOU Phoenix Sky Harbor International Airport – William P. Hobby Airport | 1,638 | 23.1 min | 50.0% | 42 |
| SAT DAL San Antonio International Airport – Dallas Love Field | 399 | 9.7 min | 71.9% | 33 |
| SAN BWI San Diego International Airport – Baltimore/Washington International Thurgood Marshall Airport | 3,686 | 17.7 min | 48.5% | 33 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 14 | 14 | 85.7% | 0 |
| November 2024 | 46 | 45 | 84.4% | 1 |
| December 2024 | 59 | 59 | 86.4% | 0 |
| January 2025 | 62 | 60 | 80.0% | 2 |
| February 2025 | 51 | 50 | 86.0% | 1 |
| March 2025 | 55 | 55 | 83.6% | 0 |
| April 2025 | 36 | 34 | 58.8% | 2 |
| May 2025 | 32 | 32 | 53.1% | 0 |
| June 2025 | 38 | 35 | 60.0% | 3 |
| July 2025 | 47 | 47 | 80.9% | 0 |
| August 2025 | 30 | 30 | 66.7% | 0 |
| September 2025 | 30 | 30 | 60.0% | 0 |
| October 2025 | 40 | 40 | 57.5% | 0 |
| November 2025 | 28 | 28 | 75.0% | 0 |
| December 2025 | 31 | 31 | 87.1% | 0 |
| January 2026 | 31 | 28 | 85.7% | 3 |
| February 2026 | 25 | 25 | 60.0% | 0 |
| March 2026 | 62 | 61 | 72.1% | 1 |
| April 2026 | 34 | 34 | 79.4% | 0 |
| May 2026 | 28 | 27 | 59.3% | 1 |
| June 2026 | 30 | 30 | 93.3% | 0 |
| July 2026 | 31 | 30 | 96.7% | 1 |