Also known as hidden city ticketing, this is a travel practice where passengers book a multi-city flight but disembark at the layover city and bypass their final destination in order to save money. Say you want to travel to Delhi from Mumbai but the airfare is expensive. So, you book a flight from Mumbai to Shimla with a layover in Delhi, which is cheaper than a direct flight. This tactic can save you money compared to booking a direct flight because flight pricing doesn't always follow the logical assumption that a longer trip should be more expensive. Instead, the cost of a journey is often based on how popular the destination or route is—particularly if it's nonstop—and the price at which the airline has decided people will buy tickets.