St Augustin Airport (IATA: YIF, ICAO: CYIF) is a small regional airport located in St-Augustin, Quebec, Canada, situated along the Lower North Shore of the Gulf of St. Lawrence. It serves as a vital transportation link for the remote communities in this sparsely populated region, where road connections to the rest of Quebec are essentially nonexistent. The airport is owned and operated by Transport Canada and handles scheduled regional passenger service, mail, and cargo flights. Given the isolated nature of the community, air travel is the primary means of accessing St-Augustin for most residents and visitors. Air service at YIF is provided by regional carriers offering connections to Sept-Îles and other Lower North Shore communities. The airport plays a critical role in ensuring access to healthcare, supplies, and services for local residents.