These airlines have cut the most flights this summer as jet fuel prices skyrocket Spirit Airlines and United Airlines removed over 54,000 flights, according to Cirium. CHARLY TRIBALLEAU/AFP via Getty Images More than 75,000 summer flights have been removed from airline schedules, per Cirium. The bulk of those came from Spirit and United Airlines. Jet fuel costs have soared due to the war in Iran. Airlines canceled more than 75,000 flights this summer over a 10-day period, according to the aviation analytics firm Cirium. On Tuesday, Cirium released an analysis of flight schedules between June 1 and September 30, comparing what those schedules looked like on April 24 versus May 4. During those 10 days, airlines around the world removed more than 9.3 million seats, per Cirium. US carriers accounted for the four largest reductions. About 70% of the removed seats, or 33,000 flights, came from Spirit Airlines . The budget airline shut down last Saturday after negotiations for a federal bailout fell apart.…