Saint-Léonard Airport — Saint-Léonard, Canada

Saint-Léonard Airport, coded YSL, serves a small francophone community in northwestern New Brunswick along the Saint John River near the Quebec and Maine borders. The airport primarily supports general aviation, agricultural operations, and occasional charter traffic for this rural region known for potato farming and forestry. Saint-Léonard's location near the tri-border area gives YSL a modest role in cross-border small-aircraft travel, though it has no scheduled commercial airline service. Local pilots and agricultural spray operators make up the bulk of YSL's traffic, reflecting the airport's function as a practical rural facility rather than a passenger gateway for the wider Madawaska County area.