With their plethora of fees, airlines aren't known for giving away services.
But Delta Air Lines says it will offer free movies, TV shows, music and video games on all U.S. flights of 90 minutes or more, starting Friday.
Delta said passengers will be provided the entertainment through the screens provided on seatbacks or via their own smart phones or laptops.
Delta's financial documents don't say how much money it makes from providing in-flight entertainment.
But altogether, the airline industry made $31.5 billion from fees last year, up from $2.8 billion in 2007.
That includes baggage fees and other a la carte services, such as early boarding and non-alcoholic drinks. Airlines started adding those fees in recent years to achieve profitability in the face of rising fuel prices.