Complex sentence: Honolulu International Airport is the principal aviation gateway of the City & County of Honolulu on Oahu in the State of Hawaii and is identified as one of the busiest airports in the United States, with traffic now exceeding 21 million passengers a year and rising.
Split into simpler sentences: Honolulu International Airport is the principal aviation gateway of the City & County of Honolulu on Oahu in the State of Hawaii. It is identified as one of the busiest airports in the United States, with traffic now exceeding 21 million passengers a year and rising.