Starting Jan. 1, 2018, Delta Air Lines’ SkyMiles members will have to spend $250,000 annually on their affiliated American Express credit card to meet one of the requirements for Diamond Medallion status, which provides the airline’s best perks. That’s a staggering 10 times more than the spending amount—$25,000—required in past years.
Other annual SkyMiles requirements to achieve Diamond Medallion status will remain the same. Members must fly 125,000 miles or take 140 flights, and they can spend $15,000 on....