Do airlines pay to use airspace?

No, because airlines belong to countries (British Airways-Britain, United Airlines-USA, Aer Lingus-Ireland), so as long as the airlines country has permission to use the other country's airspace, they have permission, but the airlines will have to pay commission fees to use airports, paying taxes for using the runway, using the terminal, gates etc.

Hope I helped

Source(s):

I'm a pilot