Glasgow International Airport is the nearest airport to Gigha, just 2.5 hours drive from Tayinloan. You can hire a car from the airport, and for car hire quotes see: www.holidayautos.co.uk, www.hertz.co.uk, www.carquoteinternational.com.
From the Airport, take the signs to Erskine Bridge (M8). Once across the bridge take the A82 Westbound to Dumbarton. Once through Dumbarton, keep on the A82 along the beautiful shores of Loch Lomond. At Tarbet, the A82 becomes the A83, signposted Campbeltown - follow this road through some of the most scenic countryside until you come to Tayinloan. The ferry is well signposted from the main road.