Aer Lingus is a low-cost airline based at Dublin Airport, Ireland. It is owned by IAG, along with British Airlines and Iberia. It operates a combination of short-haul narrowbody aircraft and long-haul wide-body aircraft, including variants of the A320 and A330. It has a relatively high average fleet age of 11 years. Aer Lingus' on board service level changes depending on the length and destination of the flight - in most cases, all flights operated by A320 aircraft have no complementary on board dining and beverage options. Long-haul A330 services reflect a more traditional full-service model, however without complementary alcoholic beverages. Its frequent flier program is the Gold Circle Club, and it is in the process of joining the Oneworld Alliance.