WN1509
WN1509 (Southwest Airlines) is a multi-stop service on 27 routes, busiest Houston to New York. Of 611 departures recorded from October 2024 to July 2026, 77.7% left on time, according to the US BTS.
- On-time departures77.7%of 611 flights
- Average delay12.1 min
- July 202628▼ 20.0%vs July 2025
- Cancelled1.2%
- Legs flown under this number27
according to the US BTS · Oct 13, 2024 → Jul 31, 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 | 28 | 26 | ▼ 7.1% |
| February | 26 | 37 | ▲ 42.3% |
| March | 31 | 13 | ▼ 58.1% |
| April | 36 | 29 | ▼ 19.4% |
| May | 41 | 37 | ▼ 9.8% |
| June | 34 | 26 | ▼ 23.5% |
| July | 35 | 28 | ▼ 20.0% |
| August | 20 | – | – |
| September | 17 | – | – |
| October | 26 | – | in progress |
| November | 29 | – | – |
| December | 28 | – | – |
| Year to date (Jan–Jul) | 231 | 196 | ▼ 15.2% |
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 | 92.3% | 75.0% | ▼ 18.8% |
| February | 92.3% | 75.7% | ▼ 18.0% |
| March | 96.8% | 66.7% | ▼ 31.1% |
| April | 97.2% | 55.2% | ▼ 43.3% |
| May | 80.5% | 48.7% | ▼ 39.6% |
| June | 84.9% | 46.2% | ▼ 45.6% |
| July | 80.0% | 66.7% | ▼ 16.7% |
| August | 90.0% | – | – |
| September | 94.1% | – | – |
| October | 84.6% | – | in progress |
| November | 86.2% | – | – |
| December | 75.0% | – | – |
| Year-to-date average (Jan–Jul) | 89.1% | 62.0% | ▼ 30.4% |
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 | 2 | 2 | 0.0% |
| February | 0 | 0 | – |
| March | 0 | 1 | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 1 | 0 | ▼ 100.0% |
| July | 0 | 1 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 0 | – | – |
| Year to date (Jan–Jul) | 3 | 4 | ▲ 33.3% |
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 98.9% 604
- Cancelled 1.1% 7
Share of all recorded flights in the period, all legs. · Oct 13, 2024 → Jul 31, 2026
On time, leg by leg
Departures within 15 minutes of schedule; small figure = departures recorded.
Legs flown under this number
99 of 9
| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| HOU LGA William P. Hobby Airport – LaGuardia Airport | 2,295 | 8.9 min | 84.3% | 104 |
| DEN CMH Denver International Airport – John Glenn Columbus International Airport | 1,853 | 19.8 min | 60.0% | 61 |
| OAK BUR Oakland San Francisco Bay Airport – Hollywood Burbank/Bob Hope Airport | 523 | 9.1 min | 76.7% | 60 |
| BUR LAS Hollywood Burbank/Bob Hope Airport – Harry Reid International Airport | 359 | 8.6 min | 84.8% | 60 |
| MEM HOU Frederick W. Smith International Airport – William P. Hobby Airport | 780 | 6.1 min | 81.3% | 50 |
| SMF DEN Sacramento International Airport – Denver International Airport | 1,460 | 11.7 min | 85.3% | 34 |
| HOU LAS William P. Hobby Airport – Harry Reid International Airport | 1,985 | 22.0 min | 61.8% | 34 |
| MSY STL Louis Armstrong New Orleans International Airport – St. Louis Lambert International Airport | 974 | -0.3 min | 93.9% | 33 |
| PHX SJC Phoenix Sky Harbor International Airport – Mineta San Jose International Airport | 999 | 1.7 min | 96.9% | 32 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 10 | 10 | 70.0% | 0 |
| November 2024 | 26 | 26 | 76.9% | 0 |
| December 2024 | 28 | 28 | 71.4% | 0 |
| January 2025 | 28 | 26 | 92.3% | 2 |
| February 2025 | 26 | 26 | 92.3% | 0 |
| March 2025 | 31 | 31 | 96.8% | 0 |
| April 2025 | 36 | 36 | 97.2% | 0 |
| May 2025 | 41 | 41 | 80.5% | 0 |
| June 2025 | 34 | 33 | 84.9% | 1 |
| July 2025 | 35 | 35 | 80.0% | 0 |
| August 2025 | 20 | 20 | 90.0% | 0 |
| September 2025 | 17 | 17 | 94.1% | 0 |
| October 2025 | 26 | 26 | 84.6% | 0 |
| November 2025 | 29 | 29 | 86.2% | 0 |
| December 2025 | 28 | 28 | 75.0% | 0 |
| January 2026 | 26 | 24 | 75.0% | 2 |
| February 2026 | 37 | 37 | 75.7% | 0 |
| March 2026 | 13 | 12 | 66.7% | 1 |
| April 2026 | 29 | 29 | 55.2% | 0 |
| May 2026 | 37 | 37 | 48.7% | 0 |
| June 2026 | 26 | 26 | 46.2% | 0 |
| July 2026 | 28 | 27 | 66.7% | 1 |