Flying July 4 weekend? Brace for ‘operational challenges’

(CNN) — Travel for the July 4 holiday weekend is revving up, and things are already getting messy. More than 550 flights in the United States had been canceled by 8:40 pm ET Friday, with almost 6,500 delays, according to flight tracking site FlightAware. This weekend could be the biggest air travel weekend for the …

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