Flight Ticket restrictions and conditions may vary from airline to airline, in general the more in advance you book the lower airfare. For amendments and cancellation the airfare and ticket conditions for most low cost airlines tend to be the same, in that you may have heavy penalties if you amend or cancel your flights itinerary. Most airplane tickets will be strictly non refundable, however some Low Cost carriers have recently introduce higher priced fares with flexible options regarding changes and refunds.