Airlines like Tap Air Portugal and Ireland's Aer Lingus switch between A321neo and A330 planes throughout the year, flying the bigger jet during the summer and holiday months, per Cirium.

Aer Lingus is set to receive the first Airbus A321XLR ... It represents a stretched variant of both the A321neo and the A321LR aircraft types. Airbus identified a demand for long-haul narrowbody ...

Speaking during a briefing on 9 January, commercial aircraft chief Christian Scherer referred to the initial delivery to Iberia in late October and the subsequent handovers to Aer Lingus in December.