Flight history · Aug 2025 – Jul 2026 · US DOT on-time records
WN 356 · Charleston (CHS) → Houston (HOU)
Sold by Southwest. Still flying: 24 of the last 56 days (Mon, Thu, Fri).
Arrives on time85%within 15 minutes, of 26 flights
Cancelled0.0%of scheduled flights
An hour or more late8%of flights that operated
When late, on average45 minlate, among flights 15+ min late
Schedule
Typical times in the Jun 6 – Jul 31, 2026 schedule, local at each airport (Houston is 1 h behind Charleston).
- Leaves CHS
- 12:00
- Arrives HOU
- 13:30
- Flight time
- 2h 30m
- Days flown, last 8 weeks
- 24 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 CHS
All flights leaving Charleston (CHS) at 12–1 pm, wherever they’re going: 82% left within 15 minutes and 3.1% were cancelled (1,829 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.