WN1729
WN1729 (Southwest Airlines) is a multi-stop service on 35 routes, busiest Washington to Houston. Of 559 departures recorded from October 2024 to July 2026, 81.3% left on time, according to the US BTS.
- On-time departures81.3%of 559 flights
- Average delay10.2 min
- July 202627▲ 17.4%vs July 2025
- Cancelled0.7%
- Legs flown under this number35
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 | 25 | 24 | ▼ 4.0% |
| February | 33 | 27 | ▼ 18.2% |
| March | 17 | 23 | ▲ 35.3% |
| April | 32 | 28 | ▼ 12.5% |
| May | 38 | 31 | ▼ 18.4% |
| June | 23 | 26 | ▲ 13.0% |
| July | 23 | 27 | ▲ 17.4% |
| August | 10 | – | – |
| September | 9 | – | – |
| October | 52 | – | in progress |
| November | 21 | – | – |
| December | 17 | – | – |
| Year to date (Jan–Jul) | 191 | 186 | ▼ 2.6% |
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 | 84.0% | 91.7% | ▲ 9.1% |
| February | 93.9% | 77.8% | ▼ 17.2% |
| March | 70.6% | 78.3% | ▲ 10.9% |
| April | 80.7% | 92.9% | ▲ 15.1% |
| May | 84.2% | 96.8% | ▲ 14.9% |
| June | 86.4% | 80.0% | ▼ 7.4% |
| July | 47.8% | 66.7% | ▲ 39.4% |
| August | 80.0% | – | – |
| September | 100.0% | – | – |
| October | 69.2% | – | in progress |
| November | 81.0% | – | – |
| December | 62.5% | – | – |
| Year-to-date average (Jan–Jul) | 78.2% | 83.4% | ▲ 6.7% |
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 | 1 | 1 | 0.0% |
| July | 0 | 0 | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 0 | – | – |
| December | 1 | – | – |
| Year to date (Jan–Jul) | 2 | 1 | ▼ 50.0% |
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% 555
- Cancelled 0.7% 4
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 |
|---|---|---|---|---|
| DCA HOU Ronald Reagan Washington National Airport – William P. Hobby Airport | 1,959 | -1.0 min | 96.6% | 58 |
| SAN SJC San Diego International Airport – Mineta San Jose International Airport | 671 | 4.0 min | 82.5% | 57 |
| LAS MDW Harry Reid International Airport – Chicago Midway International Airport | 2,442 | 6.2 min | 85.7% | 49 |
| BWI JAX Baltimore/Washington International Thurgood Marshall Airport – Jacksonville International Airport | 1,068 | 35.6 min | 64.3% | 43 |
| BWI STL Baltimore/Washington International Thurgood Marshall Airport – St. Louis Lambert International Airport | 1,185 | 15.8 min | 73.0% | 38 |
| PHX SMF Phoenix Sky Harbor International Airport – Sacramento International Airport | 1,040 | -2.6 min | 97.2% | 36 |
| SJU MCO Luis Munoz Marin International Airport – Orlando International Airport | 1,913 | 18.5 min | 68.8% | 33 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 20 | 20 | 100.0% | 0 |
| November 2024 | 18 | 18 | 88.9% | 0 |
| December 2024 | 35 | 35 | 82.9% | 0 |
| January 2025 | 25 | 25 | 84.0% | 0 |
| February 2025 | 33 | 33 | 93.9% | 0 |
| March 2025 | 17 | 17 | 70.6% | 0 |
| April 2025 | 32 | 31 | 80.7% | 1 |
| May 2025 | 38 | 38 | 84.2% | 0 |
| June 2025 | 23 | 22 | 86.4% | 1 |
| July 2025 | 23 | 23 | 47.8% | 0 |
| August 2025 | 10 | 10 | 80.0% | 0 |
| September 2025 | 9 | 9 | 100.0% | 0 |
| October 2025 | 52 | 52 | 69.2% | 0 |
| November 2025 | 21 | 21 | 81.0% | 0 |
| December 2025 | 17 | 16 | 62.5% | 1 |
| January 2026 | 24 | 24 | 91.7% | 0 |
| February 2026 | 27 | 27 | 77.8% | 0 |
| March 2026 | 23 | 23 | 78.3% | 0 |
| April 2026 | 28 | 28 | 92.9% | 0 |
| May 2026 | 31 | 31 | 96.8% | 0 |
| June 2026 | 26 | 25 | 80.0% | 1 |
| July 2026 | 27 | 27 | 66.7% | 0 |