WN3524
WN3524 (Southwest Airlines) is a multi-stop service on 25 routes, busiest St Louis to Washington. Of 537 departures recorded from October 2024 to July 2026, 75.5% left on time, according to the US BTS.
- On-time departures75.5%of 537 flights
- Average delay14.6 min
- July 202630▼ 3.2%vs July 2025
- Cancelled1.9%
- Legs flown under this number25
Recorded departures by month
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 | 13 | 30 | ▲ 130.8% |
| February | 4 | 28 | ▲ 600.0% |
| March | 22 | 16 | ▼ 27.3% |
| April | 29 | 13 | ▼ 55.2% |
| May | 31 | 14 | ▼ 54.8% |
| June | 30 | 28 | ▼ 6.7% |
| July | 31 | 30 | ▼ 3.2% |
| August | 31 | – | – |
| September | 30 | – | – |
| October | 30 | – | in progress |
| November | 28 | – | – |
| December | 29 | – | – |
| Year to date (Jan–Jul) | 160 | 159 | ▼ 0.6% |
according to the US BTS · October 2024 → July 2026
On-time departures by month
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 | 76.9% | 90.0% | ▲ 17.0% |
| February | 100.0% | 88.9% | ▼ 11.1% |
| March | 68.2% | 75.0% | ▲ 10.0% |
| April | 75.9% | 76.9% | ▲ 1.4% |
| May | 60.0% | 92.3% | ▲ 53.9% |
| June | 41.4% | 67.9% | ▲ 64.0% |
| July | 70.0% | 83.3% | ▲ 19.0% |
| August | 83.9% | – | – |
| September | 93.3% | – | – |
| October | 66.7% | – | in progress |
| November | 74.1% | – | – |
| December | 75.0% | – | – |
| Year-to-date average (Jan–Jul) | 70.3% | 82.0% | ▲ 16.6% |
according to the US BTS · October 2024 → July 2026
Average departure delay by month
according to the US BTS · October 2024 → July 2026
Cancelled departures by month
The most recent periods19 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | 0 | – |
| February | 0 | 1 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | 1 | 1 | 0.0% |
| June | 1 | 0 | ▼ 100.0% |
| July | 1 | 0 | ▼ 100.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 3 | – | in progress |
| November | 1 | – | – |
| December | 1 | – | – |
| Year to date (Jan–Jul) | 3 | 2 | ▼ 33.3% |
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 98.1% 527
- Cancelled 1.9% 10
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 DCA St. Louis Lambert International Airport – Ronald Reagan Washington National Airport | 1,154 | 28.0 min | 64.9% | 58 |
| SJC DEN Mineta San Jose International Airport – Denver International Airport | 1,522 | 6.6 min | 91.2% | 58 |
| JAX STL Jacksonville International Airport – St. Louis Lambert International Airport | 1,213 | 0.2 min | 91.4% | 58 |
| MCI LGA Kansas City International Airport – LaGuardia Airport | 1,778 | 23.0 min | 76.7% | 45 |
| LAX PHX Los Angeles International Airport – Phoenix Sky Harbor International Airport | 595 | 36.6 min | 40.0% | 45 |
| SAN PHX San Diego International Airport – Phoenix Sky Harbor International Airport | 489 | 6.8 min | 76.5% | 34 |
| LGA DAL LaGuardia Airport – Dallas Love Field | 2,219 | 19.1 min | 63.0% | 30 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 9 | 9 | 88.9% | 0 |
| November 2024 | 33 | 33 | 75.8% | 0 |
| December 2024 | 28 | 28 | 75.0% | 0 |
| January 2025 | 13 | 13 | 76.9% | 0 |
| February 2025 | 4 | 4 | 100.0% | 0 |
| March 2025 | 22 | 22 | 68.2% | 0 |
| April 2025 | 29 | 29 | 75.9% | 0 |
| May 2025 | 31 | 30 | 60.0% | 1 |
| June 2025 | 30 | 29 | 41.4% | 1 |
| July 2025 | 31 | 30 | 70.0% | 1 |
| August 2025 | 31 | 31 | 83.9% | 0 |
| September 2025 | 30 | 30 | 93.3% | 0 |
| October 2025 | 30 | 27 | 66.7% | 3 |
| November 2025 | 28 | 27 | 74.1% | 1 |
| December 2025 | 29 | 28 | 75.0% | 1 |
| January 2026 | 30 | 30 | 90.0% | 0 |
| February 2026 | 28 | 27 | 88.9% | 1 |
| March 2026 | 16 | 16 | 75.0% | 0 |
| April 2026 | 13 | 13 | 76.9% | 0 |
| May 2026 | 14 | 13 | 92.3% | 1 |
| June 2026 | 28 | 28 | 67.9% | 0 |
| July 2026 | 30 | 30 | 83.3% | 0 |