I had a similar problem.
If one end of the hose will fit at least either the airbrush or the compressor then you can get an adapter for the other end.
Locally you might check a hobby shop, Lowes, Hobby Lobby, Harbor Freight, or a general hardware store for the adapter.
I had to physically take my airbrush and hose around with me because I kept getting the wrong size adapter.
I finally bought an airbrush kit ($15) at Harbor Freight just because it contained the size adapter I needed! That airbrush is stiil in the box!
The alternative would be online but then you are going to need the EXACT size of the connectors.