The latest 'low cost' controversy: the extra cost for connecting flights that they should not force you to pay (and they do) Some airlines allocate different reservations for each flight, adding connection insurance as an extra when purchasing, with an expense that can range from 15 to 50 euros on average. "It is something completely illegal.

They cannot sell you connection insurance for something that is already regulated and that is the right of every passenger," says Rubén Sánchez, spokesperson for the organization Facua.