Flight history · Aug 2025 – Jul 2026 · US DOT on-time records
WN 4888 · Houston (HOU) → Washington (DCA)
Sold by Southwest. Still flying: 48 of the last 56 days (Mon, Tue, Wed, Thu, Fri, Sun).
Arrives on time48%within 15 minutes, of 50 flights
Cancelled4.0%of scheduled flights
An hour or more late10%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 (Washington is 1 h ahead of Houston).
- Leaves HOU
- 19:55
- Arrives DCA
- 23:55
- Flight time
- 3h 00m
- Days flown, last 8 weeks
- 48 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 7–8 pm, wherever they’re going: 56% left within 15 minutes and 0.7% were cancelled (2,804 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.