However, a spokesman for the Civil Aviation Authority said the plans would struggle to meet safety requirements.
He said: "It's aviation law that people have to have a seat belt on from take-off and landing so they would have to be in a seat. I don't know how Mr O'Leary would get around that one. During turbulence passengers also have to have a seat belt on."
The biggest problem they've got is the CAA won't let them increase the actual capacity of the plane - Boeing something or other.
The plane is designed so that all the passengers can exit the plane in under 90 seconds in an emergency - if you increase the capacity of the plane you need to completely redesign the emergency exits to cope with the extra people.
Boeing aren't willing to do it, without Ryanair giving them millions of quid, so unless they introduce the same number of standing seats as normal seats (which seems a bit pointless) it's not going to happen.
It's just another bit of free advertising for the airline - they trot out some ridiculous bit of legislation (huge fees for luggage in the hold for instance) every few months just to keep themselves in the news.