Republic Airways Holdings Inc. is an aviation holding corporation based in Indianapolis Indiana which owns six airlines operating in the United States: Chautauqua Airlines Frontier Airlines Republic Airlines Shuttle America and the former Lynx Aviation. Chautauqua operates regional jet (RJ) aircraft with up to 50 seats Shuttle America operates Embraer 175 aircraft airliners with 76 seats and Republic Airlines operates Embraer 170 175 and 190 aircraft with 70-99 seats.