Ryanair
Ryanair is an Irish low-cost airline, Ryanair operates more than 550 Boeing 737 series aircraft. Ryanair flies from its primary operational bases at Dublin and London Stansted to many countries in Europe. RyanAir is preferred Airlines from many travellers from Europe.
Ryanair has been on low-cost company lists for a long time. There is no low-cost listing in Europe without Ryanair. If you want to see Ryanair and other low cost airlines of europe, you can look here.
Ryanair's Airplane, Boeing 737-800
CityJet
CityJet is an Irish regional air service company. CityJet operates maintenance facilities at Copenhagen Kastrup Airport. CityJet stopped operating scheduled flights under its own brand years ago. Nowadays CityJet is an important provider of wet leasing to European airlines. CityJet operate air passenger services over several domestic, regional routes on behalf of Scandinavian Airlines, Brussels Airlines and Lufthansa.
SAS Crj-900 Aircraft operated by Irish Airline Company CityJet's