Normally, Delta Sky Club lounge membership costs $545, so opening the Delta SkyMiles Reserve American Express Card is a better value when you consider all the other perks you get. Delta Sky Clubs offer free food, drinks, Wi-Fi, and a quieter place to relax and escape the stresses of the airport terminal. This perk makes the most sense if your home airport has a Delta Sky Club, or if you frequently travel to airports that do. If that's not the case for you, but you still want airport lounge access, The Platinum Card from American Express is another compelling option. It comes with access to Delta Sky Clubs when you fly Delta, as well as Centurion Lounge and Priority Pass lounge access. Here's our American Express Platinum card review for all the details.