(Image credit: Alex Wong / Staff) Your short-haul flights with Delta Air Lines are about to change. The airline recently announced it would discontinue complimentary drinks and snacks on 450 short-haul flights, starting May 19. What constitutes a short-haul flight? According to Delta, it's any route less than 349 miles. This affects some of the country's busiest routes, such as New York to Boston, Charlotte to Atlanta and Los Angeles to San Francisco. The change applies to all Delta Main and Delta Comfort+ passengers. First-class passengers won't be affected. This comes at a time when air travel is facing challenges due to rising jet fuel costs, which are forcing airlines to cut back on freebies. Delta announced they're making the change to streamline in-flight operations, where crew members have a narrow window to complete the snack and beverage service before descent. From just $107.88 $24.99 for Kiplinger Personal Finance Become a smarter, better informed investor.…