Prince Said Ibrahim International Airport — Moroni, Comoros

Rising from the shoreline of Grande Comore, HAH is named for a Comorian prince and provides the principal air connection for the volcanic archipelago nation scattered in the Indian Ocean between Madagascar and the East African coast. Moroni, the capital it serves, sits in the shadow of Mount Karthala, one of the world's largest active volcanoes, whose periodic rumblings have occasionally affected daily life in surrounding towns. Because the Comoros consist of several islands separated by open water, this airport functions as the hinge connecting Grande Comore to Anjouan and Mohéli via smaller domestic flights, as well as the country's main link to Réunion, mainland Africa, and the Gulf. Remittances from a large Comorian diaspora in France flow partly through routes touching this single international runway, making it disproportionately important to an economy with few other major transport gateways.