Cheap flights from Glasgow to South Africa The three major centres of South Africa are Johannesburg, Cape Town and Durban (in that order of size). Flights from Glasgow to Johannesburg and Glasgow to Cape Town have at least one stop, whilst flights from Glasgow to Durban have at least 2 stops.
If your plans are to fly to Durban, first fly from Glasgow to Johannesburg (or Glasgow to Cape Town), and then catch a local flight from Johannesburg to Durban (or Cape Town to Durban). The links below contain a full list of airlines operating flights on each route and links to their online flight reservation systems.
There are more airlines operating flights from London to South Africa, than from Glasgow, meaning there is a good chance that flights from London to South Africa are cheaper than flights from Glasgow to South Africa. If you can easily travel from Glasgow to London, it may be worthwhile checking the prices of airlines operating flights from London to South Africa.