This is how much airlines pay to fuel passenger jets as oil tops $100 a barrel — and what it means for ticket prices Airlines are spending significantly more on fuel as oil tops $100 per barrel amid the war in Iran. Al Drago/Getty Images The price to fill commercial jetliners has nearly doubled as the Strait of Hormuz remains closed. It costs about $340,000 to fully fuel an Airbus A380, an increase of about 61% from pre-war levels. JP Morgan analysts said they expect oil to cost "in the low $100s" per barrel through 2026. Filling a Boeing 747 now costs more than a quarter million dollars as oil tops $100 a barrel — driving up already high fares during the peak summer travel season. Fuel is already airlines' largest expense after labor, and the recent price surge means filling passenger jetliners now costs nearly twice as much as it did earlier this year. Travelers are already starting to see the impact, with ticket prices climbing by hundreds of dollars.…