Ryanair's O'Leary would be interested in buying all of Air Berlin

Ryanair would be interested in bidding for the whole of insolvent German carrier Air Berlin, but it needs access to more data on the airline's finances, Chief Executive Michael O'Leary told Reuters.

"We would be very happy to bid for the whole of Air Berlin, which is generally a short-haul, domestic, intra-EU carrier," O'Leary said by telephone.

"But we don't know how much restructuring it will take, how much money is it losing, why is it losing so much money in a market where we make money," he said.

O'Leary complained that the Air Berlin insolvency process is a "stitch-up" to help strengthen Lufthansa. "What's going to be left by the time Lufthansa completes the discussions?" he asked, referring to comments last week that Lufthansa was first in line for talks.