To find the return flight distance between Carcassonne to Montpellier via Barcelona, Aix-en-Provence, Saint-Raphaël, Sanremo, start with entering the locations in the control and click on Return Flight Distance. You can also add multiple destinations in between while returning from a location. If you are not aware of the routes, you can check the
Carcassonne to Barcelona Route via Barcelona, Aix-en-Provence, Saint-Raphaël, Sanremo.