Flight time from Manchester to Cape Town varies per flight. By this I mean there is no one fixed time I can simply mention but I have to assess different flights. another thing is you might want to consider the total time for the journey or just the time you spend in the air.
So now [...]

There are many flights that are available to South Africa and you have a choice of three arrival destinations in South Africa, which is Cape Town, Durban and OR Tambo International Airport which is in Johannesburg. It is not surprising to find that most flights that do end up in Cape Town or Durban pass [...]