Save for later Print Download Share LinkedIn Twitter North American jet fuel ran out of steam at the height of the summer travel season in July. Bottlenecks at US airports due to staff shortages caused massive flight disruptions and cancellations that cut into jet fuel liftings. US jet usages dropped by 6% to below 1.6 million b/d in July. The largest declines were seen at airports on the Gulf and East coasts. Vacationers flocked to locations in the Rocky Mountains, where jet demand jumped by 11% between June and July.