WN436
WN436 (Southwest Airlines) is a multi-stop service on 41 routes, busiest Atlanta to New Orleans. Of 684 departures recorded from October 2024 to July 2026, 79.1% left on time, according to the US BTS.
- On-time departures79.1%of 684 flights
- Average delay9.6 min
- July 202653▲ 278.6%vs July 2025
- Cancelled0.2%
- Legs flown under this number41
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 | 30 | 30 | 0.0% |
| February | 20 | 25 | ▲ 25.0% |
| March | 24 | 31 | ▲ 29.2% |
| April | 48 | 35 | ▼ 27.1% |
| May | 57 | 36 | ▼ 36.8% |
| June | 18 | 52 | ▲ 188.9% |
| July | 14 | 53 | ▲ 278.6% |
| August | 27 | – | – |
| September | 26 | – | – |
| October | 27 | – | in progress |
| November | 34 | – | – |
| December | 33 | – | – |
| Year to date (Jan–Jul) | 211 | 262 | ▲ 24.2% |
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 | 83.3% | 96.7% | ▲ 16.0% |
| February | 100.0% | 100.0% | 0.0% |
| March | 83.3% | 80.0% | ▼ 4.0% |
| April | 87.5% | 77.1% | ▼ 11.8% |
| May | 70.2% | 41.7% | ▼ 40.6% |
| June | 83.3% | 63.5% | ▼ 23.8% |
| July | 92.9% | 88.7% | ▼ 4.5% |
| August | 81.5% | – | – |
| September | 96.2% | – | – |
| October | 66.7% | – | in progress |
| November | 70.6% | – | – |
| December | 63.6% | – | – |
| Year-to-date average (Jan–Jul) | 85.8% | 78.2% | ▼ 8.8% |
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 | 1 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | 0 | – |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 0 | 1 |
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 99.9% 683
- Cancelled 0.1% 1
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 |
|---|---|---|---|---|
| ATL MSY Hartsfield Jackson Atlanta International Airport – Louis Armstrong New Orleans International Airport | 684 | 6.1 min | 82.3% | 96 |
| PHL MCO Philadelphia International Airport – Orlando International Airport | 1,389 | 15.5 min | 75.9% | 58 |
| DEN MCI Denver International Airport – Kansas City International Airport | 855 | 29.3 min | 44.0% | 50 |
| SLC PHX Salt Lake City International Airport – Phoenix Sky Harbor International Airport | 818 | -3.8 min | 100.0% | 47 |
| BHM DEN Birmingham-Shuttlesworth International Airport – Denver International Airport | 1,740 | 5.8 min | 88.1% | 42 |
| MCO BHM Orlando International Airport – Birmingham-Shuttlesworth International Airport | 771 | 8.3 min | 75.6% | 41 |
| AUS DEN Austin Bergstrom International Airport – Denver International Airport | 1,249 | 14.3 min | 81.3% | 33 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 85.0% | 0 |
| November 2024 | 17 | 17 | 82.4% | 0 |
| December 2024 | 27 | 27 | 88.9% | 0 |
| January 2025 | 30 | 30 | 83.3% | 0 |
| February 2025 | 20 | 20 | 100.0% | 0 |
| March 2025 | 24 | 24 | 83.3% | 0 |
| April 2025 | 48 | 48 | 87.5% | 0 |
| May 2025 | 57 | 57 | 70.2% | 0 |
| June 2025 | 18 | 18 | 83.3% | 0 |
| July 2025 | 14 | 14 | 92.9% | 0 |
| August 2025 | 27 | 27 | 81.5% | 0 |
| September 2025 | 26 | 26 | 96.2% | 0 |
| October 2025 | 27 | 27 | 66.7% | 0 |
| November 2025 | 34 | 34 | 70.6% | 0 |
| December 2025 | 33 | 33 | 63.6% | 0 |
| January 2026 | 30 | 30 | 96.7% | 0 |
| February 2026 | 25 | 25 | 100.0% | 0 |
| March 2026 | 31 | 30 | 80.0% | 1 |
| April 2026 | 35 | 35 | 77.1% | 0 |
| May 2026 | 36 | 36 | 41.7% | 0 |
| June 2026 | 52 | 52 | 63.5% | 0 |
| July 2026 | 53 | 53 | 88.7% | 0 |