Charlotte Douglas has a quiet confidence about it — a mid-Atlantic hub that serious transatlantic travelers have learned to work in their favor, particularly when Ireland is the destination. American Airlines operates this routing through its Philadelphia hub, and that connection is worth understanding before you book. PHL's transatlantic terminal can feel chaotic during summer peak, but in the shoulder months — October especially, or the post-holiday stretch through early March — the experience smooths out considerably, and you'll often find AA's business class inventory opening up in ways that reward the flexible traveler.
On the long haul itself, American typically deploys its Flagship Business product on transatlantic metal, and the fully flat bed with direct aisle access on the Boeing 777 makes the roughly eight-hour crossing genuinely restorative. The westward positioning of many seats means you can chase the last light over the Atlantic on an evening departure, which is one of those small pleasures that reminds you why the front cabin matters. The Flagship dining service has improved meaningfully in recent years — order the pre-departure drink before the door closes and settle into the meal service without rushing it.
Dublin Airport's Terminal 2 handles American's arrivals, and the US Customs and Border Protection preclearance facility there remains one of the smartest advantages in transatlantic travel — you land at JFK or PHL as a domestic arrival, which is transformative if you're continuing onward. For the return leg through CLT, January and February offer some of the most compelling value windows on this routing, when Dublin is quieter, the countryside is dramatically itself, and the cabin feels like it belongs to a more discerning era of travel.