London - After luggage check-in charges and speedy boarding fees, leading budget airline Ryanair is considering levies for the use of cabin loos to meet costs, chief executive Michael O'Leary said Friday.

The Irish entrepreneur said passengers might in future have to pay a pound (1.42 dollars) to spend a penny on his fleet. He did not reveal if and how the charge could possibly also be made in euros, given the airline's many European destinations.

"One thing we have looked at in the past and are looking at again is the possibility of maybe putting a coin slot on the toilet door so that people might actually have to spend a pound to spend a penny in future," O'Leary said on BBC television.

"We are always looking at ways of making air travel cheaper. We are all about finding ways of raising revenue so we can keep lowering air fares," he added.

Asked about the possibility that not all Ryanair travellers might have a spare pound in their pocket, he said: "I don't think there is anybody in history that has got on board a Ryanair aircraft with less than a pound."

Rochelle Turner, of consumer magazine Which? Holiday, said: "It seems Ryanair is prepared to plumb any depth to make a fast buck and, once again, is putting profit before the comfort of its customers."

"Charging people to go to the toilet might result in fewer people buying overpriced drinks on board, though - that would serve Ryanair right," she predicted. (dpa)