Ireland West - Knock International Airport is the closest international airport, with connections to the UK including London and Glasgow. Shannon International Airport is to the south, with direct flights from Chicago, Boston, and New York City as well as connections from across Europe. The largest international airport in Ireland is Dublin International, with 170+ destinations. From the US these include Atlanta, Boston, Charlotte, Chicago, Cleveland, Dallas, Denver, Hartford, Las Vegas, Los Angeles, Orlando, Philadelphia, San Francisco, Seattle, and Washington.