Flight history · Aug 2025 – Jul 2026 · US DOT on-time records
WN 20 · Houston (HOU) → Dallas (DAL)
Sold by Southwest. Still flying: 16 of the last 56 days (Tue, Wed).
Arrives on time86%within 15 minutes, of 97 flights
Cancelled7.2%of scheduled flights
An hour or more late3%of flights that operated
When late, on average48 minlate, among flights 15+ min late
Schedule
Typical times in the Jun 6 – Jul 31, 2026 schedule, local at each airport.
- Leaves HOU
- 11:00
- Arrives DAL
- 12:10
- Flight time
- 1h 10m
- Days flown, last 8 weeks
- 16 of 56
Each square is a day, Sat Jun 6 to Fri Jul 31, two weeks per row (each column is the same weekday); filled = flew.
How late it arrives
Share of flights that operated arriving more than this late.
Horizontal: minutes late at arrival (0 to 3 hours). Vertical: share of flights later than that.
Its hour at HOU
All flights leaving Houston (HOU) at 11 am–12 pm, wherever they’re going: 82% left within 15 minutes and 1.0% were cancelled (3,473 flights in the year). Other Southwest flights on this route →
Upcoming forecasts
Our odds that this flight is late or cancelled on the days we publish.