Context: Republic Airways Holdings, Inc. is an American airline holding corporation based in Indianapolis, Indiana, that owns Republic Airline, an American regional airline operating in the United States., Frontier Airlines is a United States ultra low cost carrier headquartered in Denver, Colorado, USA. The carrier, which is a subsidiary and operating brand of Indigo Partners, LLC, operates flights to 54 destinations throughout the United States and 5 international destinations. The airline maintains a hub at Denver International Airport with numerous focus cities across the United States. Also, under a code-share agreement with Great Lakes Airlines, the airline connects passengers to surrounding Rocky Mountain States through their Denver hub., Midwest Connect was the brand name for the regional airline service of Midwest Airlines, rather than a certificated airline carrier. Skyway Airlines was the sole operator of Midwest Connect since its inception in 1989, until SkyWest Airlines began additional Midwest Connect service on April 1, 2007. SkyWest took over all Midwest Connect operations following Skyway's shutdown of operations on April 5, 2008. In October, 2008, Republic Airlines also began operating for Midwest Connect. On November 3, 2009 the Embraer 170 and Embraer 190 operated by Republic Airlines were rebranded as Midwest Airlines operated by Republic Airlines. Later, during Midwest's merger with Frontier Airlines under the ownership of Republic, Chautauqua Airlines oprerated as Midwest Connect., Milwaukee is the largest city in the state of Wisconsin and the fifth-largest city in the Midwestern United States. The county seat of Milwaukee County, it is on Lake Michigan's western shore. Milwaukee's estimated population in 2015 was 600,155. Milwaukee is the main cultural and economic center of the MilwaukeeRacineWaukesha Metropolitan Area with an estimated population of as of 2014. Ranked by estimated 2014 population, Milwaukee is the 31st largest city in the United States., Regional airlines are airlines that operate regional aircraft to provide passenger air service to communities without sufficient demand to attract mainline service. There are two main ways for a regional airline to do business:, General Mitchell International Airport is a civil-military airport five miles (8 km) south of downtown Milwaukee, Wisconsin, United States. It is included in the Federal Aviation Administration (FAA) National Plan of Integrated Airport Systems for 20172021, in which it is categorized as a medium-hub primary commercial service facility., Midwest Airlines (formerly Midwest Express) was a U.S.-based airline and, for a short time, an operating brand of Republic Airways Holdings based in Oak Creek, Wisconsin, operating from Milwaukee's General Mitchell International Airport. On April 13, 2010, parent company Republic announced that Midwest Airlines and Frontier Airlines would merge, with the Midwest brand disappearing in late 2011., This is a list of destinations that Midwest Connect , operated by Chautauqua Airlines for Midwest Airlines served as of April 2010 ., Skyway Airlines was an American ramp and aircraft ground handling services and catering company based in Oak Creek, Wisconsin. Until April 5, 2008, it operated as a regional airline and banner carrier exclusively for Midwest (Express) Airlines under the business name Midwest Connect, feeding Midwest's hub at General Mitchell International Airport with twelve 32-seat Fairchild-Dornier 328JET jet aircraft, and four 19-seat Beechcraft 1900 turboprops. Skyway Airlines, along with its parent corporation, Midwest Air Group, has ceased operations., SkyWest Airlines is a North American airline owned by SkyWest, Inc. and headquartered in St. George, Utah, U.S.. Financially speaking and according to the Airlines for America definitions, SkyWest is a North American major airline. SkyWest however, operates on a regional airline level and is a member of the Regional Airline Association. SkyWest Airlines flies to 203 cities, in 43 states; five Canadian provinces and five cities in Mexico and the Bahamas. The airline serves as a feeder airline, operating under contract with various major carriers. It flies as SkyWest Airlines in a partnership with Alaska Airlines, as United Express on behalf of United Airlines, as American Eagle on behalf of American Airlines, and as Delta Connection on behalf of Delta Air Lines., Wisconsin is a U.S. state located in the north-central United States, in the Midwest and Great Lakes regions. It is bordered by Minnesota to the west, Iowa to the southwest, Illinois to the south, Lake Michigan to the east, Michigan to the northeast, and Lake Superior to the north. Wisconsin is the 23rd largest state by total area and the 20th most populous. The state capital is Madison, and its largest city is Milwaukee, which is located on the western shore of Lake Michigan. The state is divided into 72 counties., Subject: midwest connect destinations, Relation: is_a_list_of, Options: (A) aircraft (B) airline (C) airport (D) brand (E) city (F) company (G) lake (H) merger (I) name (J) state
Output: airport