AerClub is the loyalty program of Aer Lingus. It is one of several programs that use Avios as a loyalty currency. Once earned, Avios can be transferred between these different loyalty programs, opening up many more ways to spend. With AerClub, Avios can be spent on all flights with Aer Lingus. Many other airlines, including all oneworld airlines, can be booked by transferring Avios freely to other programs.