Ryanair is back taunting Portuguese rail operator CP. The low-cost airline has launched a promotional package offering flights from Lisbon to Porto for the same knockdown price as a rail ticket: €14.99. The promo will be available online until midnight on August 14 (Thursday) for flight bookings in September, October and November. This is the second time Ryanair and CP have locked swords. The first – when Ryanair launched the Lisbon-Porto air link – involved CP adopting the slogan, “Quality business, Ryanair prices”, in its bid to capture customers.