Ireland Round-Trip Flights from $663

Book round-trip flights to Shannon, Ireland with prices from $663 at United. The product page has a list of best price flights from airports across the US, but you can also search for flights from a specific location. We found the best price on an economy flight from NYC leaving 7/30 and returning 8/13. Flights are available from cities like Denver, Boston, and many more. Note that prices are subject to change.