This chapter examines travel and communication in Late Antiquity, analysing the complexities of movement across the Roman and Byzantine worlds from the third to the eighth century. Rather than viewing this period as one of declining mobility, the chapter argues that travel remained vital, though its dynamics shifted due to political, economic and religious transformations. A major focus is on the infrastructure that supported travel, including roads, bridges, way stations and ports. The cursus publicus, the state-run courier system, is highlighted as a crucial mechanism for imperial communication and administrative efficiency. Trade networks, both maritime and overland, played a fundamental role in sustaining long-distance movement, with Mediterranean seaports, river transport and caravan routes facilitating commercial exchanges. Religious travel, particularly pilgrimage and episcopal councils, became increasingly significant after the rise of Christianity, with the movement of monks, clergy and pilgrims contributing to the spread of religious ideas and artistic traditions. The chapter also addresses migration, discussing the movements of soldiers, officials and entire populations in response to military campaigns, economic opportunities and political upheavals. In this way, this contribution demonstrates that mobility remained central to the late antique world, shaping social, economic and cultural interactions across the empire.