The air route with stops at CYHZ, CYSJ, CYUL, CYOW, CYTZ, CYYB, CYXL, CYWG, CYQR, CYQL, CYYC, and CYVR covers a large portion of Canada, spanning from the eastern coast to the western coast.

The route starts at CYHZ, which is Halifax Stanfield International Airport in Halifax, Nova Scotia. From there, the next stop is CYSJ, or Saint John Airport, located in Saint John, New Brunswick.

The route then heads west to CYUL, or Montréal-Pierre Elliott Trudeau International Airport, which is located in Montréal, Quebec. From there, it continues to CYOW, or Ottawa/Macdonald-Cartier International Airport, which is located in Ottawa, Ontario.

The next stop is CYTZ, or Billy Bishop Toronto City Airport, which is located on the Toronto Islands in Toronto, Ontario. From there, the route heads north to CYYB, or North Bay/Jack Garland Airport, which is located in North Bay, Ontario.

The route then continues to CYXL, or Sioux Lookout Airport, which is located in Sioux Lookout, Ontario. From there, it heads further west to CYWG, or Winnipeg James Armstrong Richardson International Airport, located in Winnipeg, Manitoba.

Next on the route is CYQR, or Regina International Airport, which is located in Regina, Saskatchewan. From there, it heads further west to CYQL, or Lethbridge County Airport, which is located in Lethbridge, Alberta.

The route then continues northwest to CYYC, or Calgary International Airport, located in Calgary, Alberta. Finally, the route ends at CYVR, or Vancouver International Airport, which is located in Richmond, British Columbia.

Overall, this air route covers a vast distance and connects major cities and airports across Canada, making it an important link in the country's air transportation network.The Canadian airmail service from 1930 to 1950 was an important milestone in the country's aviation history. It was during this time that Canada's airmail system grew from a modest, experimental service to a reliable and efficient means of delivering mail across the country.

In 1930, the Canadian government established Trans-Canada Air Lines (TCA), which was responsible for managing the country's airmail service. TCA used a fleet of small, single-engine planes to transport mail from city to city, and by 1939, it had expanded its services to cover most major Canadian cities.

One of the most significant developments in Canadian airmail during this time was the introduction of the "V-mail" system. This system allowed soldiers stationed overseas during World War II to send mail back home in a more efficient manner. V-mail was essentially a microfilming process that reduced the size and weight of letters, making it possible to transport them more easily by air.

Another notable event in Canadian airmail history occurred in 1949, when the first trans-Atlantic airmail service was established. This service linked Montreal and London, England, and it marked a major milestone in international airmail delivery.

Overall, the Canadian airmail service from 1930 to 1950 played a vital role in the country's development, helping to connect communities across Canada and facilitating communication between Canadians and people around the world. Today, the legacy of this period lives on, with Canada's airmail system remaining an important part of the country's infrastructure.