Alaska (USA) is 37% larger than Ontario (Canada).
Area: 1,076,395 km2 StatCan
Population: 12,851,821 (May 2019) StatCan
Ontario is one of the ten provinces of Canada, located in east-central Canada. It is Canada's most populous province by a large margin, accounting for nearly 40% of all Canadians, and is the second largest province in total area. Wikipedia
Area: 1,477,953 km2 US Census
Population: 735,132 (July 2013) US Census
Alaska is a U.S. state situated in the northwest extremity of the North American continent. Wikipedia