Car rental in Guam International Airport. Check our car rental prices in Guam International Airport in order to enjoy the best service with the cheapest prices. Car rental fleet in Guam International Airport which is frequently renewed, being maximum from 6 to 12 months old, all inclusive prices (unlimited mileage, insurance and tax) and a dedicated customer service are some of the advantages that you will have when you hire a car in Guam International Airport with us.