Ryanair Ltd. (ISEQ: RYA, LSE: RYA, NASDAQ: RYAAY) is an Irish low-cost airline. Its headquarters is located at Dublin Airport with its primary operational bases at Dublin and London Stansted Airports.

Ryanair operates over 290 Boeing 737-800 aircraft. The airline has been characterised by rapid expansion, a result of the deregulation of the aviation industry in Europe in 1997 and the success of its low-cost business model.