Heathrow Passenger Numbers Drop 5% Amid Iran War Fallout and Rising Fuel Costs

London Heathrow Airport reported a 5% decline in passenger numbers for April 2026, with approximately 6.7 million travelers passing through the hub. This decrease is attributed to the ongoing US-Israeli war on Iran, which has dampened demand for international travel and caused significant disruptions. However, transit passenger volumes rose by 10% year-on-year as travelers rerouted flights to Asia and Oceania via Heathrow to avoid Middle Eastern hubs like Dubai and Doha. The conflict has also triggered an oil crisis due to the blockade of the Strait of Hormuz, causing jet fuel prices to double to $181 per barrel. Consequently, airlines face soaring operational costs, with British Airways' owner warning of potential fare increases to offset a €2 billion hit. Despite current stability in fuel supplies, fears of shortages persist, leading some UK airlines to secure rights to cancel flights without losing slots. While Heathrow's CEO noted that April was the busiest month of the year so far, the airport plans to review its 2026 passenger forecasts amid growing industry uncertainty and fluctuating ticket prices.