Flight history · Aug 2025 – Jul 2026 · US DOT on-time records
WN 1636 · Houston (HOU) → Dallas (DAL)
Sold by Southwest. Still flying: 16 of the last 56 days (Tue, Wed).
Arrives on time95%within 15 minutes, of 270 flights
Cancelled1.1%of scheduled flights
An hour or more late1%of flights that operated
When late, on average50 minlate, among flights 15+ min late
Schedule
Typical times in the Jun 6 – Jul 31, 2026 schedule, local at each airport.
- Leaves HOU
- 06:00
- Arrives DAL
- 07:05
- Flight time
- 1h 05m
- 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 6–7 am, wherever they’re going: 95% left within 15 minutes and 1.4% were cancelled (2,432 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.