Yes, you can cancel your ticket within 24 hours of buying and get a complete refund of your ticket. But there are three criteria in order to get a refund. If there are less than 24 hours left for your flight to depart then a refund claim must be filed within 30 minutes of the original purchase. If there are 24 to 72 hours left for your flight to depart then a refund claim must be filed within 60 minutes of the original purchase. If there are more than 72 hours left for your flight to depart then a refund claim must be filed within 24 hours of the original purchase.