For information about flights to Ireland, contact Aer Lingus or Ryanair. The most straightforward route is to fly to Dublin and then travel by train or bus from Dublin to Westport, then by taxi or bus to Roonagh Pier. There are also Ryanair flights from Stansted to Knock, a small airport which is roughly an hour and a half from the pier, but onwards travel by public transport is problematic.
If you are driving, from Westport take the coast road to Louisburgh (14 miles), drive straight through Louisburgh and about a quarter of a mile after the village, take a right turn to Roonagh (the road is clearly signposted for Roonagh Pier and Clare Island.) It is a further 4 miles to the pier.
There's a bus service from Westport to Roonagh. Information about it can be obtained through the Tourist office in Westport, +353 (0)98 25711
In the summer, there are numerous ferry sailings from Roonagh pier to Clare Island during the day. The boat crossing takes about 20 minutes. In the winter, there are usually only one or two boats per day. For details about the ferry schedule, see www.clareislandferry.com or www.omalleyferries.com. Or you can ring O'Grady Ferries, +353 (0)87 9004115 or O'Malley Ferries, +353 (0)98 25045.
Ballytoughey Loom is 2 miles from the pier on the light house road and is clearly sign posted from the harbour. There's a taxi service on the island, +353 (0)98 25640.