Avios points can be used to get discounts of Aer Lingus flights.
Get 10 Aer Lingus Avios points for each €1 spent at the iTunes store. It’s normally 7 points but up to 10 during this promotion.
To activate the offer visit the Aer Lingus eStore iTunes page (login details same as the Aer Club) https://estore.aerlingus.com/retailers/itunes-ie
Click through from eStore to iTunes and spend