TORONTO—A giant Russian cargo plane is facing another cold Canadian winter stuck in Toronto. A court battle could determine its fate.

Russian airline Volga-Dnepr has sued the Canadian government, asking a federal court to declare that Canada’s sanctions against it are invalid. The court could determine what happens to the airline’s massive Antonov An-124 cargo plane, one of only 26 in the world, which has been stuck in Toronto since Canada closed its airspace to Russian planes in February 2022.