Rising jet fuel prices are emerging as a significant headwind for the global travel industry just months ahead of the World Cup , raising concerns about higher airfares, reduced international demand, and softer booking trends for short-term rentals in the 11 U.S. host cities and surrounding regions. Jet fuel prices  have nearly doubled since the Iran war began, prompting some airlines to  pass higher operating costs on to consumers , while travelers may respond by becoming more selective or