The shop is located in Terminal C at the New Jersey airport and will stay open through the holidays.
MileagePlus members (you can join for free) can "spend" their miles on items including electronic gadgets, suitcases, cookbooks, power adapters, travel guides and more. There are even toys and clothes for kids.
Members may redeem as little as 600 miles for items at the store. Those who prefer to pay cash will earn 5 miles for every dollar they spend.
Last year, MileagePlus members were offered the opportunity to redeem miles for food and beverages at select Newark airport stores and eateries.
The shop is operated by OTG, a company that runs restaurants and shops in 10 airports across North America.