Coach ticket. Usually the paper ticket is for a specific journey. It is sometimes possible to purchase an ‘open’ ticket which allows travel on any coach between the destinations listed on the ticket. The cost for doing this is greater than a ticket for a specific journey. Some tickets are refundable.
Furthermore, what is coach class on a plane?
Economy class, also called coach class, steerage, standard class or (slang) cattle class, is the lowest travel class of seating in air travel, rail travel, and sometimes ferry or maritime travel.