I traveled on Aer Lingus from London to Dublin to visit Ireland. Heathrow was extremely crowded as travel are bouncing back. I visited Aer Lingus Lounge at Heathrow. Then, to my surprise, I received an upgrade to Business Class onboard the new Aer Lingus A321LR. Flight to Dublin was a short 55 minutes hop. After landing in Dublin, I went to plane-spotting at Dublin Airport. The next day I drove around the Irish countryside to visit Galway, Cliff of Mohr and Shannon. The scenery and people are both lovely in Ireland.
After 2 days, I flew out of Dublin to Toronto on another brand new Aer Lingus A321LR. Aer Lingus has decent Business Class products and I particularly enjoyed the meal onboard.
There are pros and cons of flying narrowbody A321 Transatlantic. It saves time as a direct flight without connecting at major hub airports but the single-aisle takes longer time to board, and may not have all the space as a widebody airplane has. The A321LR/XLR will become regular sights on TransAtlantic flights in the near future.