Check Delta SkyMiles is Delta's frequent flyer program, offering members a variety of rewards and benefits. Passengers can earn miles through airfare, car rentals, hotel stays and everyday purchases with partners. These miles can be redeemed for free tickets, seat upgrades, special experiences and more. Depending on their status, members can enjoy tiered benefits such as priority boarding, free checked bags and lounge access. SkyMiles never expire, giving members the flexibility to plan future travel. By joining Delta SkyMiles, travelers have access to a world of rewards and enriching travel experiences that make every trip more rewarding and enjoyable.