Indianapolis International Airport is a public airport seven miles (11 km) southwest of downtown
Indianapolis, in
Marion County,
Indiana,
United States. It is owned and operated by the
Indianapolis Airport Authority. The airport is the largest in
Indiana, occupying about in
Wayne and
Decatur townships of Marion County, all within the city of Indianapolis. It is near interstate highways
I-65,
I-69,
I-70 and
I-74, all of which connect to the city's
I-465 beltway. The passenger terminal was the first designed and built in the
United States after the
September 11, 2001, attacks.