<prompt> Tšweletša mohuta o raraganego kudu wa polelo ye Frontier Airlines e hlamilwe ka go kopanywa ga Arizona Airways, Challenger Airlines le Monarch Airlines ka la 1 June 1950.  <response>: Ee, phetolelo e raraganego ya polelo ke Frontier Airlines e be e le khamphani ya difofane yeo e bopilwego ka go kopanywa ga Arizona Airways, Challenger Airlines le Monarch Airlines ka la 1 June, 1950, yeo e nago le ntlokgolo kua Stapleton Airport kua Denver, Colorado. 