WN1546
WN1546 (Southwest Airlines) is a multi-stop service on 29 routes, busiest Atlanta to St Louis. Of 657 departures recorded from October 2024 to July 2026, 77.3% left on time, according to the US BTS.
- On-time departures77.3%of 657 flights
- Average delay11.1 min
- July 202627▼ 37.2%vs July 2025
- Cancelled1.4%
- 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 | 31 | 30 | ▼ 3.2% |
| February | 28 | 25 | ▼ 10.7% |
| March | 31 | 24 | ▼ 22.6% |
| April | 30 | 29 | ▼ 3.3% |
| May | 31 | 32 | ▲ 3.2% |
| June | 42 | 26 | ▼ 38.1% |
| July | 43 | 27 | ▼ 37.2% |
| August | 56 | – | – |
| September | 56 | – | – |
| October | 1 | – | in progress |
| November | 20 | – | – |
| December | 17 | – | – |
| Year to date (Jan–Jul) | 236 | 193 | ▼ 18.2% |
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 | 81.5% | 89.7% | ▲ 10.0% |
| February | 100.0% | 76.0% | ▼ 24.0% |
| March | 87.1% | 70.8% | ▼ 18.7% |
| April | 86.7% | 72.4% | ▼ 16.5% |
| May | 83.9% | 59.4% | ▼ 29.2% |
| June | 90.5% | 19.2% | ▼ 78.7% |
| July | 83.3% | 14.8% | ▼ 82.2% |
| August | 83.6% | – | – |
| September | 90.9% | – | – |
| October | 100.0% | – | in progress |
| November | 85.0% | – | – |
| December | 43.8% | – | – |
| Year-to-date average (Jan–Jul) | 87.6% | 57.5% | ▼ 34.4% |
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 | 4 | 1 | ▼ 75.0% |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 1 | 0 | ▼ 100.0% |
| August | 1 | – | – |
| September | 1 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 1 | – | – |
| Year to date (Jan–Jul) | 5 | 1 | ▼ 80.0% |
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 98.6% 648
- Cancelled 1.4% 9
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 |
|---|---|---|---|---|
| ATL STL Hartsfield Jackson Atlanta International Airport – St. Louis Lambert International Airport | 779 | 3.8 min | 87.6% | 117 |
| MCI MDW Kansas City International Airport – Chicago Midway International Airport | 650 | 8.3 min | 91.7% | 61 |
| OAK LGB Oakland San Francisco Bay Airport – Long Beach International Airport | 569 | -3.0 min | 94.8% | 58 |
| LAX AUS Los Angeles International Airport – Austin Bergstrom International Airport | 1,995 | 9.9 min | 84.5% | 58 |
| MDW SFO Chicago Midway International Airport – San Francisco International Airport | 2,977 | 43.3 min | 12.0% | 50 |
| IND FLL Indianapolis International Airport – Fort Lauderdale Hollywood International Airport | 1,621 | 1.2 min | 95.7% | 47 |
| MKE FLL General Mitchell International Airport – Fort Lauderdale Hollywood International Airport | 2,004 | 19.2 min | 66.7% | 40 |
| DCA MSY Ronald Reagan Washington National Airport – Louis Armstrong New Orleans International Airport | 1,560 | 5.8 min | 84.9% | 33 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 17 | 17 | 88.2% | 0 |
| November 2024 | 30 | 30 | 90.0% | 0 |
| December 2024 | 31 | 31 | 80.7% | 0 |
| January 2025 | 31 | 27 | 81.5% | 4 |
| February 2025 | 28 | 28 | 100.0% | 0 |
| March 2025 | 31 | 31 | 87.1% | 0 |
| April 2025 | 30 | 30 | 86.7% | 0 |
| May 2025 | 31 | 31 | 83.9% | 0 |
| June 2025 | 42 | 42 | 90.5% | 0 |
| July 2025 | 43 | 42 | 83.3% | 1 |
| August 2025 | 56 | 55 | 83.6% | 1 |
| September 2025 | 56 | 55 | 90.9% | 1 |
| October 2025 | 1 | 1 | 100.0% | 0 |
| November 2025 | 20 | 20 | 85.0% | 0 |
| December 2025 | 17 | 16 | 43.8% | 1 |
| January 2026 | 30 | 29 | 89.7% | 1 |
| February 2026 | 25 | 25 | 76.0% | 0 |
| March 2026 | 24 | 24 | 70.8% | 0 |
| April 2026 | 29 | 29 | 72.4% | 0 |
| May 2026 | 32 | 32 | 59.4% | 0 |
| June 2026 | 26 | 26 | 19.2% | 0 |
| July 2026 | 27 | 27 | 14.8% | 0 |