Sure, legroom has shrunk, meals have become paltry and flights are more crowded. Yet despite a litany of things we don’t like about flying these days ( see United Airlines in April), we can’t complain about the cost of flying compared to nearly 25 years ago.

At Los Angeles International Airport, average domestic air fares have fallen 35.8 percent to an average of $355.90 in 2016, compared with $554.65 (adjusted for inflation to the value of 2016 dollars) in 1993, according to the Department…