A domestic flight across an ocean

The striking case is the nonstop route between Paris and Réunion, a French island in the Indian Ocean. Réunion lies thousands of miles from mainland Europe, near Madagascar, yet it is not a separate country: it is an overseas department of France. That makes the journey domestic in the sense that both ends are within the same country, even though the aircraft crosses a vast stretch of ocean.

Why the label can mislead

“Domestic” sounds like a short hop between nearby cities, but it describes a political boundary, not a distance limit. France’s territory includes islands far beyond Europe, so a flight can be domestic while taking roughly eleven hours—longer than many international trips across continents.

The route is also a reminder that a map of a country is not always a single connected landmass. Réunion’s ties to France show up in its government and public institutions, while its location gives it a distinct Indian Ocean setting. A passenger can leave Paris and land on the other side of the world without crossing into another country.