If the Alitalia ticket cancellation is done within 24 hours of booking then expect 100% of the refund from the airlines. If the cancellation is done 4 hours within the departure timeline, then expect no refund from the airlines. For refundable tickets refund would be initiated and no refund to be initiated for non-refundable tickets. In case cancellations made via the airlines then 100% of the amount is to be refunded. Go through Alitalia Cancellation Policy & cancel your booking easily & request for refund too.