HYDERABAD: Air Costa is offering 50 per cent discount on air fare for children aged between 2 and 12 years to mark Children’s Day. Infants, who usually are charged `1,000, can fly free. Customers can book tickets between Nov 13-15 for travel from November 13 to April 15, 2015. Besides, children flying on Air Costa on November 14 will be given gifts. “The offer allows children to enjoy travel experience with Air Costa by planning their journey and holidays in advance with their parents,” said LVS Rajasekhar MD, Air Costa.