Travelers suffered through another day of cancellations. It could get worse as holiday approaches

Travelers sit on the ground at the departure area at the United Airlines terminal at Los Angeles International Airport, Wednesday June 28, 2023, in Los Angeles. Travelers waited out widespread delays at U.S. airports on Tuesday, an ominous sign heading into the long July 4 holiday weekend, which is shaping up as the biggest test yet for airlines that are struggling to keep up with surging numbers of passengers. (AP Photo/Damian Dovarganes)

Hundreds of thousands of summer travelers suffered through another day of delayed and canceled flights Wednesday, a troubling glimpse into what could happen over the long July 4 holiday weekend as airlines struggle to keep up with surging numbers of passengers.