Colonsay Airport (IATA: CSA, ICAO: EGEY) is located on the island of Colonsay, Argyll and Bute, Scotland. Located 3 nautical miles (5.6 km; 3.5 mi) west of Scalasaig, it is a small airport, with 25-minute flights every Tuesday and Thursday to Oban Airport by Hebridean Air Services. Scheduled services commenced in 2006 after the grass airfield was upgraded with a paved runway. It's the least used airport in Britain.