A subsidiary of Aegean Airlines (A3), Olympic Air (OA) is a regional Greek airline that operates from a hub at Athens International Airport (ATH). Rhodes International Airport (RHO) is also a focus city. The carrier flies non-stop to more than 15 destinations across Greece, including Kos Island International Airport (KGS), Zakynthos International Airport (ZTH) and Skiathos Island National Airport (JSI). Its fleet consists of four Bombardier Dash 8-100 planes and 10 Bombardier Dash 8 Q400. Passengers flying on Olympic Air receive frequent flier miles through Aegean Airlines' Miles & Bonus program.