1 King Fahd International AirportKing Fahd International Airport (KFIA) situated in the north west of Dammam city of Saudi Arabia is the largest airport in the world in terms of area, covering 780 km² (301 mi²) and occupies top spot in this list. Completed in 1999, the Airport has 4,000 meters of runway with width of 60m. The terminal has six stories of which three are allocated for passenger processing – the third level for arrivals, the sixth level is reserved for the members of Royal family or royal guests.
2 Denver International AirportDenver International Airport is the biggest airport in the United States and the second largest airport in the world. Operated by City & County of Denver Department of Aviation the airport covers a land area of 33,531 acres (52.4 sq mi). It handles around 50 million passengers yearly, and is the center for Frontier Airlines, Great Lakes Airlines, United Airlines and Southwest Airlines.