Inflight entertainment is a necessary evil, but the price can quickly add up without the proper planning. Between Wi-Fi access and TV/movie packages, you can run into all kinds of annoying additional charges that will only increase the longer your flight is. Thankfully, there is one way to minimize the cost of your inflight entertainment that’s a dream for any reader.

Paradies Lagardère, which runs more than 850 stores in 98 airports across the U.S. and Canada, has an attractive Read and Return program for all the books they sell. All you have to do is purchase a title, read it, and return it to a Paradies Lagardère-owned shop within six months and you'll get half your money back. This turns a $28 hardcover into a $14 one. Books in good condition are re-sold for half the price by the company, while books with more wear and tear are donated to charity.

If you haven’t heard of Paradies Lagardère, don’t worry—you’ve probably been in one of their stores. They’re the company behind a range of retail spots in airports, including licensed ventures like The New York Times Bookstore and CNBC News, and more local shops exclusive to the city you're flying out of. They also run restaurants, travel essentials stores, and specialty shops.

Not every Paradies Lagardère store sells books, though, and the company doesn’t operate out of every airport, so you’ll need to do a little research before just buying a book the next time you fly. Luckily, the company does have an online map that shows every airport it operates out of and which stores are there.

There is one real catch to remember: You must keep the original receipt of the book if you want to return it and get your money back. If you're the forgetful type, just follow PureWow’s advice and use the receipt as a bookmark and you’ll be golden.

For frequent flyers who plan ahead, this program can ensure that your inflight entertainment will never break the bank.