Cheap flights from Washington Dulles to Cape Town

You want to get on the cheapest flight from Washington Dulles to Cape Town. The way to make sure that you get on the cheapest flight is to:

type your flight details into the search engine on the left and see what airfare it spits out
check the airfare of every airline flying your route

Airline	Airports	Stops
KLM Royal Dutch Airlines	Washington Dulles (IAD) to Cape Town	1-stop (21h35) Amsterdam (Schipol)
Air France	Washington to Cape Town	1-stop Paris
Delta Airlines	Washington Dulles (IAD) to Cape Town	2-stops Atlanta Dakar
British Airways	Washington Dulles (IAD) to Cape Town	1-stop (25h28m) London (Heathrow)
Austrian Airlines	Washington to Cape Town	2-stops Vienna Frankfurt or London
American Airlines	Washington Dulles (IAD) to Cape Town	2-stops Dallas London (Heathrow)
Iberia	Washington Dulles (IAD) to Cape Town	3-stops Chicago Madrid Johannesburg
NorthWest Airlines	Washington Dulles (IAD) to Cape Town	1-stop (21h35m) Amsterdam
South African Airways	Washington Dulles (IAD) to Cape Town	1-stop (20h20) Johannesburg (OR Tambo)
United Airlines	Washington Dulles (IAD) to Cape Town	1-stop (20h20) Johannesburg (OR Tambo)
Virgin Atlantic Airways	Washington Dulles (IAD) to Cape Town	1-stop London (Heathrow)