You are right – Embakasi and then Jomo Kenyatta after the mid 1970s was used by many airlines en route to Johannesburg. This included BOAC/BA, Lufthansa, SAS, Swissair, Olympic, and El Al.
Alitalia, Iberia, Sabena and UTA would stop in Kinshasa as did Lufthansa in addition to Nairobi. KLM stopped in Kano and Brazzaville. TAP stopped in Luanda.
Pan Am served Johannesburg via West Africa (variously through Dakar, Monrovia, Abidjan, Accra, Lagos) and Kinshasa with a B707. They then changed for a while for a routing via Rio.
What about the old BOAC Rest House in Karachi, back in the mid 50s where, when travelling to or from the Far East, one was deplaned, bussed to said facility, expected to shower, take a bite and a nap, and watch a guli-guli man, before being taken back to the airport for the onward flight?
Or the OLD HK airport (not the runway into the bay) but with the REAL OLD one with the runway where the apron subsequently was? One approached from TST, weaving between the hills on the Kowloon peninsular, to settle down next to the water. To take off the engines were wound up to max with the brakes on facing Fei Ngo Shan. The brakes were released and one hopped and skipped towards the mountain until airborne, when immediately the plane was stood on its starboard wing and headed off to wherever. That was fun!
