Dallas-Fort Worth International Airport and San Francisco International Airport both now offer free yoga rooms in terminals. Several airports, including Indianapolis, Cleveland, St. Louis and DFW, have laid out half-mile walking paths through terminals in conjunction with the American Heart Association, hoping to turn “mall walkers” into “terminal walkers.” And many are pushing vendors to offer options that are lower in fat and calories—even writing healthy-food requirements into new leases.

There is a financial incentive driving some of the changes. Though most travelers buy airline tickets based on price, schedule and carrier, airports believe that savvy fliers also consider which airports are most inviting for connections.