No-frills airline Ryanair has announced that it will operate new flight routes from four UK airports: Glasgow Prestwick Airport, Liverpool John Lennon Airport, Edinburgh Airport and Bristol Airport. A Ryanair spokesman, Stephen McNamara, commented that the new routes would serve 400,000 passengers and give all travellers increased choice. 'Ryanair routes at these airports deliver millions of passengers, and sustain thousands of jobs at each airport and in the surrounding regions every year,' Mr McNamara added. Ten new routes have been launched and new aircraft will be based at Bristol Airport and Liverpool John Lennon Airport. The airline's new routes will serve a number of destinations, including Faro, Palma de Mallorca, Gdansk, Valencia, Trapani, Lodz and Tampare. Ryanair is extending its 500,000 Â£1 Christmas seat sale to celebrate. Cabin crew from Ryanair sparked controversy earlier this week when the airline released a charity calendar that showed staff posing in bikinis.