WN1090
WN1090 (Southwest Airlines) is a multi-stop service on 34 routes, busiest St Louis to Detroit. Of 706 departures recorded from October 2024 to July 2026, 79.2% left on time, according to the US BTS.
- On-time departures79.2%of 706 flights
- Average delay9.6 min
- July 202655▲ 587.5%vs July 2025
- Cancelled0.4%
- Legs flown under this number34
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 | 30 | 30 | 0.0% |
| February | 28 | 39 | ▲ 39.3% |
| March | 41 | 46 | ▲ 12.2% |
| April | 28 | 34 | ▲ 21.4% |
| May | 27 | 31 | ▲ 14.8% |
| June | 10 | 50 | ▲ 400.0% |
| July | 8 | 55 | ▲ 587.5% |
| August | 36 | – | – |
| September | 39 | – | – |
| October | 28 | – | in progress |
| November | 30 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 172 | 285 | ▲ 65.7% |
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 | 79.3% | 89.3% | ▲ 12.6% |
| February | 82.1% | 61.5% | ▼ 25.1% |
| March | 90.2% | 37.0% | ▼ 59.0% |
| April | 89.3% | 73.5% | ▼ 17.7% |
| May | 81.5% | 64.5% | ▼ 20.8% |
| June | 80.0% | 74.0% | ▼ 7.5% |
| July | 87.5% | 81.8% | ▼ 6.5% |
| August | 97.2% | – | – |
| September | 94.9% | – | – |
| October | 92.9% | – | in progress |
| November | 93.3% | – | – |
| December | 83.9% | – | – |
| Year-to-date average (Jan–Jul) | 84.3% | 68.8% | ▼ 18.4% |
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 | 2 | ▲ 100.0% |
| February | 0 | 0 | – |
| 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 | 0 | – | – |
| Year to date (Jan–Jul) | 1 | 2 | ▲ 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 99.6% 703
- Cancelled 0.4% 3
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 |
|---|---|---|---|---|
| STL DTW St. Louis Lambert International Airport – Detroit Metropolitan Wayne County Airport | 707 | 6.3 min | 85.7% | 78 |
| STL HOU St. Louis Lambert International Airport – William P. Hobby Airport | 1,108 | -3.0 min | 98.3% | 57 |
| BNA PVD Nashville International Airport – Rhode Island T. F. Green International Airport | 1,456 | 11.6 min | 71.9% | 57 |
| LAS IND Harry Reid International Airport – Indianapolis International Airport | 2,553 | 10.8 min | 75.0% | 54 |
| DEN HOU Denver International Airport – William P. Hobby Airport | 1,422 | -2.3 min | 97.8% | 46 |
| MAF HOU Midland International Air and Space Port – William P. Hobby Airport | 709 | 13.6 min | 79.5% | 39 |
| SAT DEN San Antonio International Airport – Denver International Airport | 1,280 | 14.3 min | 75.8% | 33 |
| BWI SAN Baltimore/Washington International Thurgood Marshall Airport – San Diego International Airport | 3,686 | 0.1 min | 97.0% | 33 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 23 | 23 | 65.2% | 0 |
| November 2024 | 30 | 30 | 90.0% | 0 |
| December 2024 | 32 | 32 | 78.1% | 0 |
| January 2025 | 30 | 29 | 79.3% | 1 |
| February 2025 | 28 | 28 | 82.1% | 0 |
| March 2025 | 41 | 41 | 90.2% | 0 |
| April 2025 | 28 | 28 | 89.3% | 0 |
| May 2025 | 27 | 27 | 81.5% | 0 |
| June 2025 | 10 | 10 | 80.0% | 0 |
| July 2025 | 8 | 8 | 87.5% | 0 |
| August 2025 | 36 | 36 | 97.2% | 0 |
| September 2025 | 39 | 39 | 94.9% | 0 |
| October 2025 | 28 | 28 | 92.9% | 0 |
| November 2025 | 30 | 30 | 93.3% | 0 |
| December 2025 | 31 | 31 | 83.9% | 0 |
| January 2026 | 30 | 28 | 89.3% | 2 |
| February 2026 | 39 | 39 | 61.5% | 0 |
| March 2026 | 46 | 46 | 37.0% | 0 |
| April 2026 | 34 | 34 | 73.5% | 0 |
| May 2026 | 31 | 31 | 64.5% | 0 |
| June 2026 | 50 | 50 | 74.0% | 0 |
| July 2026 | 55 | 55 | 81.8% | 0 |