Lufthansa is suing a traveller over a loophole that many are using to get cheaper flights to popular destinations

Airlines are cracking down on a ticketing loophole that can knock thousands of pounds off the cost of travel – but the fight back is only giving more publicity to the advantages of “hidden city” travel.

At its most simplistic, hidden city ticketing is when a passenger purchases a ticket to less popular and thus cheaper destination that happens to be routed through a more popular, and thus pricier hub destination, and gets off there, skipping the last leg of their journey. Anyone can do it, providing you travel only with carry-on luggage.