Charleston International Airport is a joint civil-military airport located in north Charleston, South Carolina, united states. The airport is operated by the Charleston county aviation authority under a joint-use agreement with joint base Charleston. It is south Carolina’s busiest airport; in 2022 the airport served over 5.3 million passengers in its busiest year on record. The airport is located in north Charleston and is approximately 12 miles (19 km) northwest of downtown Charleston. The airport serves as a focus city for breeze airways. It is also home to the Boeing facility that assembles the 787 Dreamliner.