WN18
WN18 (Southwest Airlines) is a multi-stop service on 13 routes, busiest Houston to Dallas. Of 184 departures recorded from October 2024 to May 2026, 77.5% left on time, according to the US BTS.
- On-time departures77.5%of 184 flights
- Average delay12.5 min
- May 202615▼ 6.3%vs May 2025
- Cancelled3.3%
- Legs flown under this number13
Recorded departures by month
All legs under this number combined; see the leg table.
Months without data are left blank.
The most recent periods14 periods
| Period | Departures 2025 | Departures 2026 | Change vs last year |
|---|---|---|---|
| January | 11 | – | – |
| February | 4 | – | – |
| March | 1 | – | – |
| April | 12 | 9 | ▼ 25.0% |
| May | 16 | 15 | ▼ 6.3% |
| June | 14 | – | – |
| July | 20 | – | – |
| August | 4 | – | – |
| September | 4 | – | – |
| October | 8 | – | in progress |
| November | 8 | – | – |
| December | 6 | – | – |
according to the US BTS · October 2024 → May 2026
On-time departures by month
Months without data are left blank.
On time = departure within 15 minutes of schedule. Non-cancelled flights with a recorded delay only.
The most recent periods14 periods
| Period | On time 2025 | On time 2026 | Change vs last year |
|---|---|---|---|
| January | 36.4% | – | – |
| February | 100.0% | – | – |
| March | 100.0% | – | – |
| April | 91.7% | 100.0% | ▲ 9.1% |
| May | 87.5% | 86.7% | ▼ 0.9% |
| June | 71.4% | – | – |
| July | 90.0% | – | – |
| August | 25.0% | – | – |
| September | 50.0% | – | – |
| October | 100.0% | – | in progress |
| November | 71.4% | – | – |
| December | 66.7% | – | – |
according to the US BTS · October 2024 → May 2026
Average departure delay by month
Months without data are left blank.
according to the US BTS · October 2024 → May 2026
Cancelled departures by month
Months without data are left blank.
The most recent periods14 periods
| Period | Cancelled 2025 | Cancelled 2026 | Change vs last year |
|---|---|---|---|
| January | 0 | – | – |
| February | 0 | – | – |
| March | 0 | – | – |
| April | 0 | 0 | – |
| May | 0 | 0 | – |
| June | 0 | – | – |
| July | 0 | – | – |
| August | 0 | – | – |
| September | 0 | – | – |
| October | 0 | – | in progress |
| November | 1 | – | – |
| December | 0 | – | – |
according to the US BTS · October 2024 → May 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 96.7% 178
- Cancelled 3.3% 6
Share of all recorded flights in the period, all legs. · Oct 12, 2024 → May 30, 2026
Legs flown under this number
1| Routes | Distance (km) | Avg delay | On time | Departures |
|---|---|---|---|---|
| HOU DAL William P. Hobby Airport – Dallas Love Field | 386 | 9.2 min | 84.9% | 88 |
Monthly figures
| Period | Departures | With departure delay recorded | On time | Cancelled |
|---|---|---|---|---|
| October 2024 | 6 | 6 | 66.7% | 0 |
| November 2024 | 12 | 12 | 91.7% | 0 |
| December 2024 | 34 | 29 | 65.5% | 5 |
| January 2025 | 11 | 11 | 36.4% | 0 |
| February 2025 | 4 | 4 | 100.0% | 0 |
| March 2025 | 1 | 1 | 100.0% | 0 |
| April 2025 | 12 | 12 | 91.7% | 0 |
| May 2025 | 16 | 16 | 87.5% | 0 |
| June 2025 | 14 | 14 | 71.4% | 0 |
| July 2025 | 20 | 20 | 90.0% | 0 |
| August 2025 | 4 | 4 | 25.0% | 0 |
| September 2025 | 4 | 4 | 50.0% | 0 |
| October 2025 | 8 | 8 | 100.0% | 0 |
| November 2025 | 8 | 7 | 71.4% | 1 |
| December 2025 | 6 | 6 | 66.7% | 0 |
| April 2026 | 9 | 9 | 100.0% | 0 |
| May 2026 | 15 | 15 | 86.7% | 0 |