Which city is represented by the airport code IAH?

The airport code IAH stands for George Bush Intercontinental Airport, which serves the city of Houston, Texas. This airport is one of the major hubs operated by United Airlines and plays a crucial role in international and domestic flights. IAH is located about 23 miles north of Downtown Houston and is named after George H.W. Bush, the 41st President of the United States.

The other options represent different airports or cities that do not correspond to the code IAH. For instance, Greenville, South Carolina, has its own designated airport code, while Honolulu and Grand Rapids each have their respective airport codes that are different from IAH. Therefore, the identification of IAH specifically as Houston (Intercontinental) reflects its established use within the aviation industry.