American Airlines tightens frequent flyer perks on basic economy tickets

Context: American introduced basic economy fares in 2017. It's the lowest-priced ticket option for the airline and comes with added restrictions, from boarding group placement to upgrade eligibility.

• Travelers were still able to earn AAdvantage miles — until now.

What they're saying: "We routinely evaluate our fare products to remain competitive in the marketplace," American said in a statement. "Basic Economy customers will continue to receive one free personal item and one free carry-on bag, free snacks, soft drinks and in-flight entertainment."

Between the lines: American's elite loyalty members who have booked basic economy tickets will remain eligible for first-class upgrades on domestic flights, CNBC reported.

The big picture: American is competing with airlines like Delta and United for customers willing to pay more for comfort.

• Delta travelers flying basic economy do not earn Delta SkyMiles.

• United does allow customers to earn miles, but travelers flying basic economy with United are limited to one personal item.

Zoom in: Charlotte Douglas International Airport is American's second-largest hub after Dallas, with the airline operating about 90% of flights. That dominance limits travelers' alternatives and often drives up fares.

• Other American hubs include markets such as Philadelphia, Miami, Phoenix, Chicago and Los Angeles.

By the numbers: American expects to operate more than 11,700 flights, accounting for more than 1.4 million seats, between Dec. 18 and Jan. 5 at Charlotte, per the airline.