Ryanair, the Irish airline famous for its low fares and an extensive menu of fees, is vowing to fight a court ruling that calls one of its extra charges "abusive."

A judge in Barcelona, Spain, ruled that the carrier's 40 euro (about $54) boarding card reissue fee is illegal. Passengers must pay it if they arrive for their flight without a pre-printed boarding pass.

If the decision is not reversed, Ryanair vowed to get rid of the charge altogether, warning that passengers who arrived at the airport without their pre-printed boarding passes would simply not be able to go through security or board their plane.