WN3731
WN3731 (Southwest Airlines) is a multi-stop service on 26 routes, busiest San Juan to Orlando. Of 436 departures recorded from October 2024 to July 2026, 66.5% left on time, according to the US BTS.
- On-time departures66.5%of 436 flights
- Average delay17.7 min
- July 202631▼ 20.5%vs July 2025
- Cancelled0.7%
- Legs flown under this number26
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 | 2 | 2 | 0.0% |
| February | 2 | 14 | ▲ 600.0% |
| March | 39 | 29 | ▼ 25.6% |
| April | 13 | 61 | ▲ 369.2% |
| May | 4 | 68 | ▲ 1,600.0% |
| June | 35 | 34 | ▼ 2.9% |
| July | 39 | 31 | ▼ 20.5% |
| August | 9 | – | – |
| September | 4 | – | – |
| October | 1 | – | in progress |
| November | 6 | – | – |
| December | 6 | – | – |
| Year to date (Jan–Jul) | 134 | 239 | ▲ 78.4% |
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 | 50.0% | 50.0% | 0.0% |
| February | 50.0% | 71.4% | ▲ 42.9% |
| March | 84.6% | 37.9% | ▼ 55.2% |
| April | 91.7% | 72.1% | ▼ 21.3% |
| May | 100.0% | 61.8% | ▼ 38.2% |
| June | 74.3% | 57.6% | ▼ 22.5% |
| July | 79.5% | 32.3% | ▼ 59.4% |
| August | 77.8% | – | – |
| September | 100.0% | – | – |
| October | 100.0% | – | in progress |
| November | 50.0% | – | – |
| December | 83.3% | – | – |
| Year-to-date average (Jan–Jul) | 75.7% | 54.7% | ▼ 27.7% |
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 | 0 | – |
| March | 0 | 0 | – |
| April | 1 | 0 | ▼ 100.0% |
| May | 0 | 0 | – |
| June | 0 | 1 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 1 | 1 | 0.0% |
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 99.3% 433
- Cancelled 0.7% 3
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
5| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| SJU MCO Luis Munoz Marin International Airport – Orlando International Airport | 1,913 | 5.4 min | 80.3% | 61 |
| SJU TPA Luis Munoz Marin International Airport – Tampa International Airport | 1,991 | 43.0 min | 38.6% | 58 |
| BUR LAS Hollywood Burbank/Bob Hope Airport – Harry Reid International Airport | 359 | 2.7 min | 86.0% | 57 |
| STL BOS St. Louis Lambert International Airport – Boston Logan International Airport | 1,680 | 43.4 min | 36.4% | 33 |
| DAL SAT Dallas Love Field – San Antonio International Airport | 399 | 6.6 min | 84.4% | 33 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 10 | 10 | 60.0% | 0 |
| November 2024 | 18 | 17 | 70.6% | 1 |
| December 2024 | 9 | 9 | 66.7% | 0 |
| January 2025 | 2 | 2 | 50.0% | 0 |
| February 2025 | 2 | 2 | 50.0% | 0 |
| March 2025 | 39 | 39 | 84.6% | 0 |
| April 2025 | 13 | 12 | 91.7% | 1 |
| May 2025 | 4 | 4 | 100.0% | 0 |
| June 2025 | 35 | 35 | 74.3% | 0 |
| July 2025 | 39 | 39 | 79.5% | 0 |
| August 2025 | 9 | 9 | 77.8% | 0 |
| September 2025 | 4 | 4 | 100.0% | 0 |
| October 2025 | 1 | 1 | 100.0% | 0 |
| November 2025 | 6 | 6 | 50.0% | 0 |
| December 2025 | 6 | 6 | 83.3% | 0 |
| January 2026 | 2 | 2 | 50.0% | 0 |
| February 2026 | 14 | 14 | 71.4% | 0 |
| March 2026 | 29 | 29 | 37.9% | 0 |
| April 2026 | 61 | 61 | 72.1% | 0 |
| May 2026 | 68 | 68 | 61.8% | 0 |
| June 2026 | 34 | 33 | 57.6% | 1 |
| July 2026 | 31 | 31 | 32.3% | 0 |