MET – Montreal Metropolitan Airport (IATA: YHU, ICAO: CYHU) (French: MET – Aéroport métropolitain de Montréal), formerly known as Montréal Saint-Hubert - Longueuil Airport (Aéroport Montréal Saint-Hubert - Longueuil) or Montréal/Saint-Hubert Airport, and still commonly referred to as St-Hubert airport, is located in the Saint-Hubert borough of Longueuil, Quebec. The airport is located 16 km (9.9 mi) east of Downtown Montreal and 3 nautical miles (5.6 km; 3.5 mi) east of downtown Longueuil.

As of 2023, it is ranked as Canada's 12th busiest airport by aircraft movements. This airport mainly serves travelers to Quebec destinations.

The airport is classified as an airport of entry by Nav Canada and is staffed by the Canada Border Services Agency (CBSA) on a call-out basis from Montréal–Mirabel International Airport. CBSA officers at this airport can handle general aviation aircraft only, with no more than 15 passengers.