Nordair was a Quebec-based airline in Canada founded in 1947 from the merger of Boreal Airways and Mont Laurier Aviation.

The airline operated from the 1940s to the 1980s. Initially, most of its business was international and transatlantic passenger and freight charters and other contracts. It also operated scheduled flights to a number of destinations in eastern Canada and the Northwest Territories. Nordair flew out of Montreal's two airports: initially from Dorval Airport, now Montréal–Trudeau International Airport, and later from Montréal–Mirabel International Airport as this latter airfield did not open until 1975. It was headquartered in Montreal with operations at Dorval, Quebec and their head office at 1320 Boulevard Graham in Mont Royal.

Nordair was operating scheduled passenger services in July 1959 utilizing Douglas DC-3 and Douglas DC-4 propeller aircraft with routings of Montreal - Frobisher Bay (now Iqaluit) - Cape Dyer Airport; Montreal - Roberval - Fort Chimo (now Kuujjuaq) - Frobisher Bay; and Montreal - Quebec City - Roberval - Chibougamau.

The airline was still operating scheduled passenger flights 20 years later. According to Nordair's July 1, 1979 system timetable and route map, jet service was being operated as far west as Winnipeg and as far north as the Resolute Bay Airport in the Canadian Arctic with a number of destinations in Ontario and Quebec in Canada being served including Montreal (via Dorval Airport), Ottawa, Toronto, Quebec City, Hamilton, Ontario and Windsor, Ontario as well as Pittsburgh in the United States, primarily with Boeing 737-200 jetliners but also with Fairchild Hiller FH-227 turboprop aircraft. The airline was also operating scheduled passenger flights in 1975 with Lockheed L-188 Electra turboprop aircraft primarily to destinations in Quebec. Nordair was continuing to operate scheduled passenger flights in 1986 primarily with Boeing 737-200 jets.

The airline was operating Boeing 737-200 passenger jet service in 1969 in both scheduled and charter operations according to the June 15, 1970 Nordair system timetable which contained the following marketing message concerning its leisure charter flights: SUNNY HOLIDAYS - BLUE TAIL JET CHARTER FLIGHTS TO THE SUN....BARBADOS - JAMAICA - BAHAMAS - FLORIDA - MEXICO. This same timetable also lists scheduled passenger service operated by Nordair with the Boeing 737-200 between Montreal Dorval and Fort Chimo (now Kuujjuaq), Frobisher Bay (now Iqaluit), Great Whale (now Kuujjuarapik), Hamilton and Resolute.

Nordair was purchased by Canadian Pacific Air Lines which had operated as CP Air. On March 27, 1987, Pacific Western Airlines purchased Canadian Pacific Air Lines and then emerged as Canadian Airlines. The jet operation was absorbed into Canadian Airlines, while the turboprop operations were absorbed into Inter-Canadien. In 2000, that airline was acquired by Air Canada.

Intair, a scheduled passenger airline that was based in Canada and operated jet and turboprop aircraft, used Nordair's two letter "ND" airline code for its domestic flights in eastern Canada in 1989 until it ceased operations and went out of business.

Another company called Nordair Quebec 2000 Incorporated operated in 2000 as a domestic regional carrier and cargo operator in Quebec, but the licence and licence applications for the airline were suspended in 2006 by Transport Canada, and again the Nordair name disappeared from the airline industry