Southwest Airlines said Tuesday that it will begin charging customers a fee to check bags, abandoning a decades-long practice that executives had described last fall as key to differentiating the budget carrier from its rivals.
Southwest, which built years of advertising campaigns around its policy of letting passengers check up to bags for free, said people who haven't either reached the upper tiers of its Rapid Rewards loyalty program, bought a business class ticket or hold the airline's credit card will have to pay for checked bags.
