EasyJet, like Ryanair, uses a business model pioneered by Southwest Airlines. Both airlines have adapted this model for the European market through further cost-cutting measures, such as not selling connecting flights or providing complimentary snacks on board. The key points of this business model are high aircraft utilisation, quick turnaround times, charging for extras (such as priority boarding, hold baggage, and food) and keeping operating costs low. One main difference EasyJet and Ryanair have from Southwest is they both fly a young fleet of aircraft. Southwest has an average fleet age of 11.9 years whereas Ryanair's and EasyJet's average fleet ages are just a little over six years each.