Ryanair Chief Executive Michael O'Leary announced the plans to replace the back 10 rows in all of the airline's 250 planes with standing areas along with a plan to replace the bathrooms with $1.50 pay toilets, The Daily Telegraph reported Thursday.
A Ryanair spokesman said officials hope to begin safety testing in about 12 months.
However, officials with the European Aviation Safety Agency told The Guardian that the airline would struggle to make the plans conform to safety regulations.
"A seat (or berth for a non-ambulant person) must be provided for each occupant who has reached his or her second birthday," an EASA spokesman said. "This idea (of Ryanair's) is unprecedented and unlikely to be certified in the near future."