We all love a bargain, as is clear with the popularity of airlines such as Ryanair and easyJet, but then we all love a good moan about Michael O'Leary and his penny-saving ways too don't we? Well those penny-saving ways have made Ryanair one of the most profitable airlines in the world so maybe we shouldn't be so quick to judge (we'll still moan about buying a tea and sandwich for a tenner on flight though). This doc will examine how these cost-effective airlines revolutionised the industry, what the future holds for them and how they can maintain their current levels of success.