FSX United Airlines Boeing 757-300 flight2000it 14 years ago FSX United Airlines Boeing 757-300. Due to the Continental/United merger they changed the look of the United planes, and here it is. Model by Project Open Sky. By Gabriel Guzman. 37 Mb FSX/FS2004/P3D – Boeing 757-300 Condor FlugdienstFSX/FS2004 – Boeing 757-300 Condor FlugdienstFSX/FS2004 – Boeing 757-300 Icelandair Airline