WN3582
WN3582 (Southwest Airlines) is a multi-stop service on 26 routes, busiest St Louis to Denver. Of 622 departures recorded from October 2024 to July 2026, 65.8% left on time, according to the US BTS.
- On-time departures65.8%of 622 flights
- Average delay16.7 min
- July 202614▼ 53.3%vs July 2025
- Cancelled1.0%
- Legs flown under this number26
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods18 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 33 | 5 | ▼ 84.8% |
| February | 28 | – | – |
| March | 39 | 23 | ▼ 41.0% |
| April | 32 | 32 | 0.0% |
| May | 31 | 35 | ▲ 12.9% |
| June | 30 | 15 | ▼ 50.0% |
| July | 30 | 14 | ▼ 53.3% |
| August | 45 | – | – |
| September | 47 | – | – |
| October | 53 | – | in progress |
| November | 34 | – | – |
| December | 35 | – | – |
according to the US BTS · October 2024 → July 2026
On-time departures by month
Months without data are left blank.
On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.
The most recent periods18 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 78.1% | 80.0% | ▲ 2.4% |
| February | 71.4% | – | – |
| March | 84.6% | 85.7% | ▲ 1.3% |
| April | 71.9% | 45.2% | ▼ 37.2% |
| May | 58.1% | 40.0% | ▼ 31.1% |
| June | 93.3% | 33.3% | ▼ 64.3% |
| July | 93.3% | 78.6% | ▼ 15.8% |
| August | 37.8% | – | – |
| September | 29.8% | – | – |
| October | 64.2% | – | in progress |
| November | 93.9% | – | – |
| December | 91.4% | – | – |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
Months without data are left blank.
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
Months without data are left blank.
The most recent periods18 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 1 | 0 | ▼ 100.0% |
| February | 0 | – | – |
| March | 0 | 2 | – |
| April | 0 | 1 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 1 | – | – |
| December | 0 | – | – |
according to the US BTS · October 2024 → July 2026
This is a historical record of departures already flown, not a forecast for your flight.
Several legs: the headline figure averages all of them. See the leg table.
Cancellation share
- Not cancelled 99.0% 616
- Cancelled 1.0% 6
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
7| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| STL DEN St. Louis Lambert International Airport – Denver International Airport | 1,236 | 13.4 min | 75.3% | 91 |
| SAN DAL San Diego International Airport – Dallas Love Field | 1,899 | 28.8 min | 45.2% | 84 |
| MCO DAL Orlando International Airport – Dallas Love Field | 1,564 | 2.1 min | 93.1% | 59 |
| ATL IND Hartsfield Jackson Atlanta International Airport – Indianapolis International Airport | 696 | 18.7 min | 72.4% | 58 |
| SEA LAS Seattle–Tacoma International Airport – Harry Reid International Airport | 1,395 | 27.7 min | 38.6% | 57 |
| LGB OAK Long Beach International Airport – Oakland San Francisco Bay Airport | 569 | -3.2 min | 96.1% | 51 |
| ATL MDW Hartsfield Jackson Atlanta International Airport – Chicago Midway International Airport | 952 | 14.9 min | 75.8% | 33 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 6 | 6 | 83.3% | 0 |
| November 2024 | 19 | 19 | 63.2% | 0 |
| December 2024 | 36 | 35 | 54.3% | 1 |
| January 2025 | 33 | 32 | 78.1% | 1 |
| February 2025 | 28 | 28 | 71.4% | 0 |
| March 2025 | 39 | 39 | 84.6% | 0 |
| April 2025 | 32 | 32 | 71.9% | 0 |
| May 2025 | 31 | 31 | 58.1% | 0 |
| June 2025 | 30 | 30 | 93.3% | 0 |
| July 2025 | 30 | 30 | 93.3% | 0 |
| August 2025 | 45 | 45 | 37.8% | 0 |
| September 2025 | 47 | 47 | 29.8% | 0 |
| October 2025 | 53 | 53 | 64.2% | 0 |
| November 2025 | 34 | 33 | 93.9% | 1 |
| December 2025 | 35 | 35 | 91.4% | 0 |
| January 2026 | 5 | 5 | 80.0% | 0 |
| March 2026 | 23 | 21 | 85.7% | 2 |
| April 2026 | 32 | 31 | 45.2% | 1 |
| May 2026 | 35 | 35 | 40.0% | 0 |
| June 2026 | 15 | 15 | 33.3% | 0 |
| July 2026 | 14 | 14 | 78.6% | 0 |