US Airways has become the latest airline to pull out of Shannon with the announcement Thursday that it ending service to the western airport.

The airline said it was suspending flights from Philadelphia to Shannon, London and Birmingham in England, Milan in Italy and Stockholm in Sweden.

The company did not say when it intended to pull the service but attempts to book flights from Philadelphia to Shannon resulted in error codes on usairways.com.

The flight was a favorite for Irish people traveling home from the west coast of the U.S. and is bound to make life more difficult for travelers who live outside the Boston and New York hubs.