Hey, From my experience, how much are delta miles worth depends on the type of booking. When I used my miles for a domestic flight, they were worth about 1.2 cents each. Sometimes, I got better value on international flights or upgrades. Using miles for gift cards or non-flight options gave lower value. Booking in advance helped me make the most of my miles. So, the worth really varies based on how smartly you redeem them. https://rightcheckin.com/blog/delta-miles-calculator-know-the-worth-of-your-skymiles/