WN153
WN153 (Southwest Airlines) is a multi-stop service on 27 routes, busiest Houston to Baltimore. Of 689 departures recorded from October 2024 to July 2026, 90.6% left on time, according to the US BTS.
- On-time departures90.6%of 689 flights
- Average delay4.2 min
- July 202631▼ 20.5%vs July 2025
- Cancelled0.7%
- Legs flown under this number27
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 | 35 | ▲ 16.7% |
| February | 28 | 29 | ▲ 3.6% |
| March | 31 | 31 | 0.0% |
| April | 30 | 30 | 0.0% |
| May | 31 | 33 | ▲ 6.5% |
| June | 38 | 30 | ▼ 21.1% |
| July | 39 | 31 | ▼ 20.5% |
| August | 29 | – | – |
| September | 26 | – | – |
| October | 31 | – | in progress |
| November | 30 | – | – |
| December | 31 | – | – |
| Year to date (Jan–Jul) | 227 | 219 | ▼ 3.5% |
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 | 100.0% | 81.8% | ▼ 18.2% |
| February | 78.6% | 100.0% | ▲ 27.3% |
| March | 90.3% | 96.8% | ▲ 7.1% |
| April | 90.0% | 96.7% | ▲ 7.4% |
| May | 87.1% | 93.9% | ▲ 7.9% |
| June | 86.8% | 100.0% | ▲ 15.2% |
| July | 94.9% | 100.0% | ▲ 5.4% |
| August | 79.3% | – | – |
| September | 84.6% | – | – |
| October | 83.9% | – | in progress |
| November | 86.7% | – | – |
| December | 83.9% | – | – |
| Year-to-date average (Jan–Jul) | 89.7% | 95.6% | ▲ 6.6% |
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 | 3 | 2 | ▼ 33.3% |
| February | 0 | 0 | – |
| March | 0 | 0 | – |
| 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) | 3 | 2 | ▼ 33.3% |
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% 684
- Cancelled 0.7% 5
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
11Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 33 | 33 | 84.9% | 0 |
| November 2024 | 33 | 33 | 97.0% | 0 |
| December 2024 | 30 | 30 | 96.7% | 0 |
| January 2025 | 30 | 27 | 100.0% | 3 |
| February 2025 | 28 | 28 | 78.6% | 0 |
| March 2025 | 31 | 31 | 90.3% | 0 |
| April 2025 | 30 | 30 | 90.0% | 0 |
| May 2025 | 31 | 31 | 87.1% | 0 |
| June 2025 | 38 | 38 | 86.8% | 0 |
| July 2025 | 39 | 39 | 94.9% | 0 |
| August 2025 | 29 | 29 | 79.3% | 0 |
| September 2025 | 26 | 26 | 84.6% | 0 |
| October 2025 | 31 | 31 | 83.9% | 0 |
| November 2025 | 30 | 30 | 86.7% | 0 |
| December 2025 | 31 | 31 | 83.9% | 0 |
| January 2026 | 35 | 33 | 81.8% | 2 |
| February 2026 | 29 | 29 | 100.0% | 0 |
| March 2026 | 31 | 31 | 96.8% | 0 |
| April 2026 | 30 | 30 | 96.7% | 0 |
| May 2026 | 33 | 33 | 93.9% | 0 |
| June 2026 | 30 | 30 | 100.0% | 0 |
| July 2026 | 31 | 31 | 100.0% | 0 |