In the latest fee to hit the airline industry, Delta Air Lines said Friday that it planned to begin charging a fuel surcharge of up to $50 for booking frequent-flier tickets under its awards program.

Delta is not the first airline to charge a fee for previously free tickets, but it is specifically attributing the step to the soaring cost of jet fuel.

The new fee takes effect on tickets booked on or after Aug. 15. Delta will charge a $25 fuel surcharge on tickets booked within the United States, and $50 on tickets booked for travel elsewhere, including the Caribbean, the United States Virgin Islands, Latin America and other international destinations.

Jet fuel prices have risen 83.6 percent in the last year, according to the International Air Transport Association, the global industry’s trade group. Airlines have responded with a variety of fees and charges for a range of previously free features, from checking luggage to beverages.