Jet fuel has become more expensive by 90% / American Airlines withdrew from the ticket discount A 90% increase in the price of jet fuel in the United States forced the airlines to maintain the ticket rates, so the airlines prefer to fly with empty seats instead of giving discounts. According to data from the US Department of Labor, the average price of a plane ticket in this country increased by almost 23% in the seven months that ended in September compared to the same period last year. This increase compared to the average growth of 3.6% in consumer prices is much higher and indicates the increasing pressure of the cost of air travel on passengers.