After Ukraine signs the open skies agreement with the EU. Expected by the end of 20121, the Irish low-cost carrier Ryanair plans to significantly expand its operations in Ukraine. This was reported by Reuters, citing the company’s CEO Michael O’Leary. The head of Europe’s largest low-cost says. “One of the markets that I would single out is Ukraine. I think we will become the leading investor in Ukraine when they join the European open skies agreement”