Fresh on the heels of one budget airline announcing that it will ask passengers to pay extra to bring carry-on bags on board, another is considering charging them for using the lavatory.

Ryanair, which is based in Dublin, Ireland, and bills itself as "Europe's first and largest low fares airline," is mulling a plan that would require travelers to pay either 1 euro or 1 British pound (about $1.33 or $1.52) for using the bathroom on flights lasting one hour or less.