Flat Rs 666 off on Every economy class ticket Booking period : 14 October 2015 (10:00 hrs) to 16 October 2015 (18:00 hrs). Travel period : 01 November 2015 till 26 March 2016. http://www.cleartrip.com/offers/india/air-costa Please Note : The sale is applicable for Economy Class Travel. Rs. 666/- discount is applicable on final fare for all the bookings.. The sale is valid only on economy class. The discounted fares directly appear on the Cleartrip site. Normal change/cancellations policies apply. Flight schedules and timings are subject to regulatory approvals and changes.