WN3436
WN3436 (Southwest Airlines) is a multi-stop service on 22 routes, busiest West Palm Beach to Islip. Of 586 departures recorded from October 2024 to July 2026, 71.1% left on time, according to the US BTS.
- On-time departures71.1%of 586 flights
- Average delay18.5 min
- July 202629▲ 38.1%vs July 2025
- Cancelled0.3%
- Legs flown under this number22
according to the US BTS · Oct 13, 2024 → Jul 29, 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 | 7 | ▼ 77.4% |
| February | 28 | 7 | ▼ 75.0% |
| March | 13 | 28 | ▲ 115.4% |
| April | 22 | 35 | ▲ 59.1% |
| May | 25 | 35 | ▲ 40.0% |
| June | 24 | 31 | ▲ 29.2% |
| July | 21 | 29 | ▲ 38.1% |
| August | 26 | – | – |
| September | 26 | – | – |
| October | 31 | – | in progress |
| November | 49 | – | – |
| December | 52 | – | – |
| Year to date (Jan–Jul) | 164 | 172 | ▲ 4.9% |
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 | 51.6% | 57.1% | ▲ 10.7% |
| February | 57.1% | 57.1% | 0.0% |
| March | 53.9% | 44.4% | ▼ 17.5% |
| April | 59.1% | 91.4% | ▲ 54.7% |
| May | 36.0% | 94.3% | ▲ 161.9% |
| June | 29.2% | 67.7% | ▲ 132.2% |
| July | 42.9% | 72.4% | ▲ 68.9% |
| August | 84.6% | – | – |
| September | 88.5% | – | – |
| October | 87.1% | – | in progress |
| November | 73.5% | – | – |
| December | 88.2% | – | – |
| Year-to-date average (Jan–Jul) | 47.1% | 69.2% | ▲ 47.0% |
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 | 0 | 0 | – |
| February | 0 | 0 | – |
| March | 0 | 1 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 1 | – | – |
| Year to date (Jan–Jul) | 0 | 1 |
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 99.7% 584
- Cancelled 0.3% 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
88 of 8
| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| DJT ISP President Donald J. Trump International Airport – Long Island MacArthur Airport | 1,696 | 20.3 min | 69.4% | 121 |
| MKE BWI General Mitchell International Airport – Baltimore/Washington International Thurgood Marshall Airport | 1,030 | 1.2 min | 96.0% | 50 |
| SFO DEN San Francisco International Airport – Denver International Airport | 1,553 | 44.1 min | 42.9% | 49 |
| LAX STL Los Angeles International Airport – St. Louis Lambert International Airport | 2,557 | 7.0 min | 89.8% | 49 |
| LAS SJC Harry Reid International Airport – Mineta San Jose International Airport | 620 | 32.2 min | 42.9% | 49 |
| ABQ LAS Albuquerque International Sunport – Harry Reid International Airport | 781 | 13.0 min | 75.7% | 37 |
| BWI HOU Baltimore/Washington International Thurgood Marshall Airport – William P. Hobby Airport | 2,003 | 19.5 min | 53.1% | 33 |
| LAS STL Harry Reid International Airport – St. Louis Lambert International Airport | 2,202 | 1.2 min | 90.3% | 31 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 9 | 9 | 88.9% | 0 |
| November 2024 | 27 | 27 | 92.6% | 0 |
| December 2024 | 30 | 30 | 83.3% | 0 |
| January 2025 | 31 | 31 | 51.6% | 0 |
| February 2025 | 28 | 28 | 57.1% | 0 |
| March 2025 | 13 | 13 | 53.9% | 0 |
| April 2025 | 22 | 22 | 59.1% | 0 |
| May 2025 | 25 | 25 | 36.0% | 0 |
| June 2025 | 24 | 24 | 29.2% | 0 |
| July 2025 | 21 | 21 | 42.9% | 0 |
| August 2025 | 26 | 26 | 84.6% | 0 |
| September 2025 | 26 | 26 | 88.5% | 0 |
| October 2025 | 31 | 31 | 87.1% | 0 |
| November 2025 | 49 | 49 | 73.5% | 0 |
| December 2025 | 52 | 51 | 88.2% | 1 |
| January 2026 | 7 | 7 | 57.1% | 0 |
| February 2026 | 7 | 7 | 57.1% | 0 |
| March 2026 | 28 | 27 | 44.4% | 1 |
| April 2026 | 35 | 35 | 91.4% | 0 |
| May 2026 | 35 | 35 | 94.3% | 0 |
| June 2026 | 31 | 31 | 67.7% | 0 |
| July 2026 | 29 | 29 | 72.4% | 0 |