"I don't want you to have to do the math every time," says Rick E. Chat, managing director of digital marketing at American Airlines.
American offers a package for $68 roundtrip that includes no change fees, one checked bag and early boarding. Delta is experimenting with a $199 subscription that includes a checked bag, early boarding, access to exit row seats and extra frequent flier miles on all flights a passenger takes between now and Jan. 5.
Airlines say the fees bring a sense of fairness to the system. Why should a passenger with a small carry-on subsidize a family of four, checking suitcases?
Jamie Baker, an airline analyst with JP Morgan Chase, likens it to a meal at a restaurant.
"The sides are not included in the price of a steak," he says. "Airline ticket prices should reflect the costs incurred by the individual passenger."
Scott Mayerowitz can be reached at http://twitter.com/GlobeTrotScott.