Makemytrip.com travel planner will send you multiple vacation packages some will include airfare and exclude in some. You expect all package to include airfare for international packages. In order to show package cost low, they exclude it so that you feel good about the package and you book it without knowing airfare is not included. Either you have to pay hefty airfare cost separately or cancel it. If you cancel it even next day after payment, you will lose 25% or more of the package cost.
No possibility to take switch to another packages to avoid any lose. They will still charge you for cancellation. Never ever buy vacation package and you will regret.