WN3734
WN3734 (Southwest Airlines) is a multi-stop service on 14 routes, busiest San Antonio to St Louis. Of 325 departures recorded from October 2024 to July 2026, 82.7% left on time, according to the US BTS.
- On-time departures82.7%of 325 flights
- Average delay8.0 min
- July 20269▼ 60.9%vs July 2025
- Cancelled0.6%
- Legs flown under this number14
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods17 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 25 | – | – |
| February | 26 | 10 | ▼ 61.5% |
| March | 33 | 28 | ▼ 15.2% |
| April | 7 | 30 | ▲ 328.6% |
| May | – | 31 | – |
| June | 18 | 10 | ▼ 44.4% |
| July | 23 | 9 | ▼ 60.9% |
| August | 6 | – | – |
| September | 4 | – | – |
| October | 22 | – | in progress |
| November | 2 | – | – |
| December | 3 | – | – |
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 periods17 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 87.5% | – | – |
| February | 92.3% | 100.0% | ▲ 8.3% |
| March | 72.7% | 46.4% | ▼ 36.2% |
| April | 28.6% | 90.0% | ▲ 215.0% |
| May | – | 100.0% | – |
| June | 88.9% | 100.0% | ▲ 12.5% |
| July | 86.4% | 77.8% | ▼ 9.9% |
| August | 83.3% | – | – |
| September | 75.0% | – | – |
| October | 81.8% | – | in progress |
| November | 50.0% | – | – |
| December | 100.0% | – | – |
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 periods17 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 1 | – | – |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| April | 0 | 0 | – |
| May | – | 0 | – |
| June | 0 | 0 | – |
| July | 1 | 0 | ▼ 100.0% |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| 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 99.4% 323
- Cancelled 0.6% 2
Share of all recorded flights in the period, all legs. · Oct 13, 2024 → Jul 29, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
4| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| SAT STL San Antonio International Airport – St. Louis Lambert International Airport | 1,266 | 5.2 min | 89.3% | 76 |
| TPA DEN Tampa International Airport – Denver International Airport | 2,423 | -2.0 min | 100.0% | 58 |
| MSP MDW Minneapolis–Saint Paul International Airport / Wold–Chamberlain Field – Chicago Midway International Airport | 560 | 1.8 min | 88.1% | 43 |
| TPA RDU Tampa International Airport – Raleigh-Durham International Airport | 947 | 24.6 min | 45.5% | 33 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 17 | 17 | 88.2% | 0 |
| November 2024 | 8 | 8 | 75.0% | 0 |
| December 2024 | 13 | 13 | 92.3% | 0 |
| January 2025 | 25 | 24 | 87.5% | 1 |
| February 2025 | 26 | 26 | 92.3% | 0 |
| March 2025 | 33 | 33 | 72.7% | 0 |
| April 2025 | 7 | 7 | 28.6% | 0 |
| June 2025 | 18 | 18 | 88.9% | 0 |
| July 2025 | 23 | 22 | 86.4% | 1 |
| August 2025 | 6 | 6 | 83.3% | 0 |
| September 2025 | 4 | 4 | 75.0% | 0 |
| October 2025 | 22 | 22 | 81.8% | 0 |
| November 2025 | 2 | 2 | 50.0% | 0 |
| December 2025 | 3 | 3 | 100.0% | 0 |
| February 2026 | 10 | 10 | 100.0% | 0 |
| March 2026 | 28 | 28 | 46.4% | 0 |
| April 2026 | 30 | 30 | 90.0% | 0 |
| May 2026 | 31 | 31 | 100.0% | 0 |
| June 2026 | 10 | 10 | 100.0% | 0 |
| July 2026 | 9 | 9 | 77.8% | 0 |