Tbh, low cost travel is really now low cost in name only. Between the various little grabby charges, levies, taxes, supplements etc., it is now got to ridiculous stages.
Thankfully I read recently that EU Commission have had enough of the smoke and mirrors that airlines use for airfares and will have to advertise the all-inclusive price and stop the messing.
With regard to Aer Lingus. Is short-haul defined as all routes except USA/Dubai? . Given that the Canary Islands is a four or five hour flight, is that short haul?