Guam International Airport is a significant US international airport located on the organized, unincorporated territory of Guam. The US has owned the island since the conclusion of the Spanish-American War of 1898, and it now serves as a major military base in the Pacific. The commercial airport should not be confused with Andersen Air Force Base, located on the northern end of the island. I flew through Guam as part of my Micronesia island-hopping backpacking journey that included Palau, Yap, Ulithi, and Guam.