Complex sentence: As of March 2011, Jackson-Evers International Airport was ranked as the 8th-best airport in a worldwide consumer survey conducted by Airports Council International--it was the only airport within the United States to be ranked within the top ten.
Split into simpler sentences: As of March 2011, Jackson-Evers International Airport was ranked as the 8th-best airport in a worldwide consumer survey conducted by Airports Council International. It was the only airport within the United States to be ranked within the top ten.