The European court is set to decide whether airlines should pay out thousands to travellers in lost luggage compensation.
Under proposals, flight operators could have to automatically pay €1,400 when they lose a passenger’s luggage, while currently payouts vary depending on individual national court rulings.
It comes after a preliminary case in Barcelona was brought against Spanish airline Vueling over its baggage handling procedures.
Airports lose more than 20 million bags a year while the average amount claimed by air passengers for missing luggage last year was €808.
A decision is due in the coming months.