Surface distance Cape Town <-> London is 9673 km which corresponds to 33 ms rounded up at light speed (one way).
Surface distance Seattle <-> Berlin is 8143 km which corresponds to 28 ms rounded up at light speed (one way).
Now, these are distances when travelling across earth's curved surface. Neutrino canons or (quite impossible to ever build them) cables in earth's upper mantle would achieve even faster communication. Also, they correspond to direct connections and don't involve putting the cable into international waters far away from any government trying to get some extra bucks from you. The aerospace industry has to jump through a lot of hoops in order to be able to travel through airspace of a particular country.