Yes cancellation of flight can be done in Indigo Airlines but only if you have a refundable ticket. In such cases after cancellation you get most of the ticket amount refunded in your account. You can cancel your tickets in two ways, through online Indigo website or via Indigo Customer care. But not to forget if you have bought a non refundable ticket it’s no use of cancelling it for they hardly refund you 10% deducting the entire rest amount.