A Ryanair Boeing 737-800. Ryanair is a large low-cost airline based in Ireland.
The following is a list of low-cost carriersorganized by home country. A low-cost carrier or low-cost airline (also known as a no-frills, discount or budget carrier or airline) is an airline that offers generally low fares in exchange for eliminating many traditional passenger services. Regional airlines, which may compete with low-cost airlines on some routes, are listed at List of regional airlines.