The aerospace workforce is mobile. Many travel frequently on work-related assignments. Safeguarding the health of these travelers is a major preventive medicine concern. The emphasis on travel medicine and traveler health services may differ with the circumstances. Those locations with many travelers to developing countries should provide comprehensive services. Those with few travelers, or travelers predominantly to western and developed nations should adjust their programs accordingly. The goal of the traveler health service is to prevent travel-related illness or mishap and promote a successful trip. It is essential that the traveler begins the trip in good health, or that chronic health problems are stable and compatible with the itinerary. Preparation and education are the cornerstones to successful travel. A core body of knowledge plus access to current information is essential to provide quality services to international travelers. The required information is quite dynamic and includes social, political, meteorological and health conditions on a global scale.