WN1859
WN1859 (Southwest Airlines) is a multi-stop service on 21 routes, busiest Dallas to St Louis. Of 643 departures recorded from October 2024 to July 2026, 71.9% left on time, according to the US BTS.
- On-time departures71.9%of 643 flights
- Average delay14.3 min
- July 202623▼ 25.8%vs July 2025
- Cancelled1.1%
- Legs flown under this number21
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 | 31 | 31 | 0.0% |
| February | 26 | 28 | ▲ 7.7% |
| March | 20 | 31 | ▲ 55.0% |
| April | 24 | 39 | ▲ 62.5% |
| May | 26 | 44 | ▲ 69.2% |
| June | 30 | 24 | ▼ 20.0% |
| July | 31 | 23 | ▼ 25.8% |
| August | 26 | – | – |
| September | 26 | – | – |
| October | 27 | – | in progress |
| November | 29 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 188 | 220 | ▲ 17.0% |
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 | 96.0% | 80.7% | ▼ 16.0% |
| February | 96.2% | 82.1% | ▼ 14.6% |
| March | 80.0% | 61.3% | ▼ 23.4% |
| April | 33.3% | 79.5% | ▲ 138.5% |
| May | 42.3% | 84.1% | ▲ 98.7% |
| June | 80.0% | 20.8% | ▼ 74.0% |
| July | 73.3% | 30.4% | ▼ 58.5% |
| August | 61.5% | – | – |
| September | 84.6% | – | – |
| October | 63.0% | – | in progress |
| November | 55.2% | – | – |
| December | 48.4% | – | – |
| Year-to-date average (Jan–Jul) | 71.6% | 62.7% | ▼ 12.4% |
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 | 6 | 0 | ▼ 100.0% |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 1 | 0 | ▼ 100.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 7 | 0 | ▼ 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 98.9% 636
- Cancelled 1.1% 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
99 of 9
| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| DAL STL Dallas Love Field – St. Louis Lambert International Airport | 878 | -0.4 min | 97.3% | 117 |
| ORD DEN Chicago O'Hare International Airport – Denver International Airport | 1,426 | 12.4 min | 75.0% | 61 |
| LAS ELP Harry Reid International Airport – El Paso International Airport | 938 | 3.1 min | 86.0% | 57 |
| HOU DEN William P. Hobby Airport – Denver International Airport | 1,422 | 10.4 min | 81.8% | 55 |
| SLC DEN Salt Lake City International Airport – Denver International Airport | 628 | 42.0 min | 38.0% | 50 |
| JAX STL Jacksonville International Airport – St. Louis Lambert International Airport | 1,213 | 9.7 min | 77.6% | 49 |
| SFO DAL San Francisco International Airport – Dallas Love Field | 2,371 | 53.1 min | 14.6% | 41 |
| BWI PVD Baltimore/Washington International Thurgood Marshall Airport – Rhode Island T. F. Green International Airport | 526 | 30.9 min | 33.3% | 36 |
| DEN RDU Denver International Airport – Raleigh-Durham International Airport | 2,307 | 28.8 min | 51.5% | 33 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 95.0% | 0 |
| November 2024 | 43 | 43 | 97.7% | 0 |
| December 2024 | 33 | 33 | 100.0% | 0 |
| January 2025 | 31 | 25 | 96.0% | 6 |
| February 2025 | 26 | 26 | 96.2% | 0 |
| March 2025 | 20 | 20 | 80.0% | 0 |
| April 2025 | 24 | 24 | 33.3% | 0 |
| May 2025 | 26 | 26 | 42.3% | 0 |
| June 2025 | 30 | 30 | 80.0% | 0 |
| July 2025 | 31 | 30 | 73.3% | 1 |
| August 2025 | 26 | 26 | 61.5% | 0 |
| September 2025 | 26 | 26 | 84.6% | 0 |
| October 2025 | 27 | 27 | 63.0% | 0 |
| November 2025 | 29 | 29 | 55.2% | 0 |
| December 2025 | 31 | 31 | 48.4% | 0 |
| January 2026 | 31 | 31 | 80.7% | 0 |
| February 2026 | 28 | 28 | 82.1% | 0 |
| March 2026 | 31 | 31 | 61.3% | 0 |
| April 2026 | 39 | 39 | 79.5% | 0 |
| May 2026 | 44 | 44 | 84.1% | 0 |
| June 2026 | 24 | 24 | 20.8% | 0 |
| July 2026 | 23 | 23 | 30.4% | 0 |