The town of Shannon in Ireland has fewer than 10,000 people. You can find affordable flights through KAYAK that have just one stop between ATL and the Shannon Airport (SNN). Aer Lingus flights tend to stop in Boston or London. British Airways and American Airlines tend to stop in London. When you arrive at SNN in the small town of Shannon, you will find pay-at-the-door exclusive lounges, family services, an observation deck, car rentals, and more.