Amadeus is a travel website founded in 1987 based in Madrid that is available in 11 languages. It allows customers to plan trips from flight booking to hotel and car rentals across 400 destinations. It provides additional trip planning tools not found on other travel sites like Expedia. While Expedia also offers flight and hotel booking, Amadeus offers more customized trip planning tools and sources rates and packages from over 100 travel partners including airlines, hotels, and tour operators.