Use your HDFC Bank Debit & Credit Card to Get additional Discount of 15% off on Base Fare Offer HDFC Bank Card holders to make flight bookings through Internet to avail the benefit. 15% off discount on all Domestic Airline Tickets Pan India (only on the base fare). Subject to maximum discount of Rs. 200/- per transaction in addition to the existing discounts (which are subject to change) prevailing on goibibo’s website. This is Instant Discount applicable for HDFC Bank Debit, Credit Cardholders only.