Ryanair says "very cautious" on profit guidance amid fare drop

The airline plans to invest $200 million in a new Prague base

Ryanair plans to invest $200 million in a new Prague base

Ryanair has warned it may reduce its

full-year profit guidance if a drop in ticket prices accelerates to more than 10 or 12 per cent.

"We're not yet revising the guidance," chief executive Michael O'Leary told reporters at a press conference to launch next year's London summer schedule. "But we're very cautious on the full-year guidance. If winters fares fall by more than 10 or 12 per cent, we will have to review."