Washington→Cape TownNonstop Flight TimeIAD–CPT

Washington (Washington Dulles International Airport) to Cape Town (Cape Town International Airport).

Direct flights from IAD to CPT have an estimated flight time of about 16h 57m, based on the 7,931-mile great-circle distance. Our current captured departure sample includes 4×/wk across 1 captured airline, with United Airlines appearing most often in that sample. Captured departure times run from 18:25 to 19:00 local time.

Methodology: airline, aircraft, terminal, and departure-time details come from the rolling scheduled-departures window for IAD to CPT, last seen June 15, 2026. Frequency uses 4 scheduled departures across 3 observed days; flight time is estimated from great-circle distance until this route has enough tracked flights for an observed average. Provider coverage can miss operators on some routes, so confirm live timetables before booking.