Customers could elect to pay less to sit on stools with seatbelts around their waists.
Michael O'Leary, chief executive of Ryanair, has reportedly held talks with US plane manufacturer Boeing about designing an aircraft with standing room.
Stephen McNamara, Ryanair spokesman, told the MailOnline: "The seating would completely adhere to safety procedures.
"It's really early days but we're looking at a 20% to 30% increase in passengers on commuter routes."
Chinese airline Spring has also put forward similar plans, estimating it could fit in up to 50% more passengers.
In recent months Ryanair has taken no-frills to new levels by planning to introduce a . O'Leary intends for the scheme to be in place within two years.
Additionally, and axe 90% of its baggage handlers.
Meanwhile, from October, Ryanair is abolishing check-in facilities and will instead demand that all .