Delta Platinum vs. Delta Reserve: Annual fees and credits Both the Delta Platinum and Delta Reserve earn Delta SkyMiles and can earn a sizable welcome bonus in miles.

Airline credit cards are a great tool to earn miles. So if you're planning upcoming flights, earning rewards on one of these cards can help you save money.

If you're deciding between the American Express Platinum and the Delta Reserve, here's a comparison of the two cards and their benefits.