George Bush Intercontinental Airport (IAH) is Houston’s largest airport and the 8th busiest in North America. One of the largest transportation hubs, IAH provides nonstop service to more than 185 destinations within the U.S. and nearly 70 direct international destinations. IAH has been awarded a 4-star rating from Skytrax, making Houston only the third city in the world with two 4-star rated airports.