The Chicago Airport is one of the busiest airports in the United States, with four major airports serving the city. The first airport is O'Hare International Airport (ORD), which is the largest and busiest airport in the city. The second airport is MIDWAY International Airport (MIDWAY), which is located on the south side of the city. The third airport is Gary/Chicago International Airport (GERE), which is located on the northwest side of the city. Finally, the fourth airport is LaGuardia International Airport (LAHTI), which is located on the east side of the city. All four airports serve the city of Chicago and its surrounding areas.