Alphonse Island (aka Alphonse Atoll) is a private island in Coralline Seychelles (Outer Islands) and part of the Alphonse Atoll group comprising of 3 islands (Alphonse, St Francois, Bijoutier). The atoll is located approx 400 km (250 mi) southwest of Mahe Island (on which is Victoria - country's capital city and primary cruise port),
Alphonse Island is just 2 kilometres (1 mi) north of St Francois Atoll. Alphonse Island is the only one that is inhabited (population under 200), all of whom work for IDC (Islands Development Company Ltd). The island has a total area of 1,7 km2 (0,7 mi2), while the atoll group covers a marine area of approx 5,5km (3 mi) in diameter.
The island is served by Alphonse Airport (crossing it diagonally) with regularly scheduled weekly domestic flights (by IDC) to Mahe's Seychelles International Airport. Air Seychelles operates charter flights to Mahe.