In approximately 1942 the aerodrome was listed as RCAF & D of T Aerodrome - Fort St. John, British Columbia at 56°14′N 120°44′W with a variation of 31 degrees east and elevation of 2,400 ft (730 m). The aerodrome was listed as "Under Construction - Servicable" with four runways listed as follows:

Historical airline service

Commencing in the early 1940s, Canadian Pacific Air Lines and its successors CP Air and Canadian Airlines International operated scheduled passenger service to Vancouver, British Columbia; Edmonton, Alberta; Prince George, British Columbia; Whitehorse, Yukon; Fort Nelson, British Columbia; Grande Prairie, Alberta and Watson Lake, Yukon. CP Air served the airport with Boeing 737-200 jetliners during the 1970s with direct, no change of plane flights to all of the above destinations. Other Canadian Pacific flights into the airport over the years were operated with such twin engine prop aircraft as the Lockheed Lodestar, the Douglas DC-3 and the Convair 240 as well as with the larger, four engine Douglas DC-6B propliner and Bristol Britannia turboprop. In 1994, Canadian Partner code sharing service on behalf of Canadian Airlines International was being operated with de Havilland Canada DHC-8 Dash 8 turboprops and/or Fokker F28 Fellowship jets to the airport from Vancouver, Edmonton, Grande Prairie and Fort Nelson.