Ontario Fuel Prices Spike Amid Strait of Hormuz Blockades

Fuel prices in Ontario are projected to rise on September 17, 2026, driven by a global oil supply crunch. Gasoline prices are expected to increase by six cents per litre, while diesel prices will see a sharper spike of 12 to 14 cents per litre. In the Greater Toronto Area, diesel is projected to hit an all-time high of 268.9 cents per litre.

Dan McTeague, head of Canadians for Affordable Energy, warned that diesel prices are approaching $3 per litre. These surges result from restricted seaborne oil and liquefied natural gas flows caused by blockades in the Strait of Hormuz, following conflicts involving Iran, the United States, and Israel, as well as continued fighting between Russia and Ukraine.

Some relief for gasoline consumers is expected by Friday, September 19. Prices are predicted to drop by 10 cents per litre as global oil prices retreat slightly and refineries transition from summer-blend to a cheaper winter-blend gasoline. Diesel prices are not expected to follow this trend, with only a marginal one-cent decrease projected for Friday.