What the Delta SkyMiles card does and who it's built for
The Delta SkyMiles Credit Card is a rewards card that gives you miles toward Delta flights instead of cash back. Every dollar you spend earns miles, and you get a bonus of miles just for opening the account. The card comes with a yearly fee, so the math only works if you fly Delta regularly or spend enough on the card to earn back more than the fee costs you.
Delta offers several versions of this card through American Express — a basic version, a Gold version, and a Platinum version — each with different annual fees and different rewards rates. The higher the fee, the more miles you earn per dollar and the better the perks. This guide covers how each version works so you can decide whether one fits your spending and travel habits.
Key Takeaways
- Delta SkyMiles cards charge an annual fee that ranges depending on which version you choose, and you need to earn enough miles to make that fee worth paying.
- Every purchase earns miles, but the rate varies: the basic card earns fewer miles per dollar than the premium versions, but costs less per year.
- You get a one-time bonus of miles when you open the account, which can cover several flights if you use it strategically.
- Miles expire if your account sits inactive for 24 months, so the card only makes sense if you actually fly or use the miles within that window.
- The card is issued by American Express, so it works at merchants that take Amex, not everywhere Visa or Mastercard are accepted.
The three versions and their annual fees
Delta offers the card in three tiers. The Blue American Express card has no annual fee and earns 1 mile per dollar on most purchases. This version is useful if you want to test whether you'll actually use the miles, or if you fly Delta occasionally but not regularly enough to justify a yearly cost.
The Gold American Express card costs $99 per year and earns 2 miles per dollar on Delta purchases and restaurants, and 1 mile per dollar on everything else. The Platinum American Express card costs $250 per year and earns 3 miles per dollar on Delta purchases and restaurants, and 1 mile per dollar on everything else. Both premium versions also come with a statement credit toward a Delta purchase each year, which offsets part of the fee if you use it.
The choice between them depends on how much you spend on Delta flights and dining. If you spend $5,000 a year on Delta tickets and restaurants, the Gold card's extra mile per dollar ($5,000 × 1 extra mile) might not cover the $99 fee. But if you spend $10,000 or more, the math shifts in the card's favor. The Platinum card requires higher spending to justify the $250 fee, but the extra mile per dollar and the statement credit make it worthwhile for frequent Delta travelers.
How the sign-up bonus works
When you open a Delta SkyMiles card, you receive a one-time bonus of miles — the exact amount varies by offer and changes throughout the year. These bonus miles arrive after you meet a spending requirement, usually within the first three months. The bonus is often worth several hundred dollars in flight value, which is why many people open the card even if they're not sure they'll keep it long-term.
The bonus miles count toward your total, so they expire under the same 24-month inactivity rule as miles you earn from purchases. If you earn the bonus but don't fly or use the miles within two years, you lose them. This means the bonus is only valuable if you have a concrete plan to use those miles — either a trip you're already planning or a clear intention to fly Delta within the next 24 months.
What miles are worth and how to use them
Delta miles are not a fixed currency. The value of a mile depends on the flight you book and how far in advance you book it. A mile might be worth less than half a cent on a short domestic flight booked last-minute, or worth more than a cent on a premium cabin seat booked months ahead. This unpredictability is why comparing miles to cash back is difficult — you can't straightforward multiply miles by a set dollar amount.
You use miles by booking flights directly through Delta's website or by calling Delta reservations. You can also transfer miles to Delta's airline partners, though the transfer rates and partner availability change. The most straightforward use is booking a Delta flight outright with miles, which lets you see exactly what you're getting before you commit.
Annual fees and when they're worth paying
The annual fee hits your account once per year, usually on the card anniversary. For the Gold card at $99 per year, you need to earn at least that much in extra value to break even. For the Platinum card at $250 per year, the math is steeper. Both cards come with a statement credit toward a Delta purchase, which reduces the true cost — but only if you actually use it.
If you don't fly Delta in a given year, or if you don't spend enough on the card to earn miles that exceed the fee, you're paying to hold a card you're not using. Many people downgrade to the no-fee Blue version in years when they don't travel, then upgrade back to Gold or Platinum when they know they'll fly. American Express allows this without penalty, so you can adjust based on your actual travel plans.
How miles expire and what keeps them active
Delta miles expire if your account has no activity for 24 consecutive months. Activity means earning miles, redeeming miles, or flying on Delta. Even a single purchase on the card or a single flight resets the clock. This rule is why the card only makes sense if you're an active traveler — if you earn miles and then don't touch your account for two years, you lose everything you've earned.
The 24-month window is longer than many other airline programs, which gives you some breathing room. But it also means you need to plan ahead. If you're considering the card, think about whether you'll realistically fly Delta or use the card within the next two years. If you won't, the miles you earn will eventually disappear.
American Express acceptance and where you can use the card
The Delta SkyMiles card is issued by American Express, which means it works at merchants that take Amex. Not all stores, restaurants, or gas stations accept American Express — some only take Visa or Mastercard. This can be a real limitation if you're trying to maximize miles by using the card for everyday purchases.
Before you open the card, check whether the places you shop most often take American Express. If you do most of your spending at merchants that don't accept Amex, you won't be able to earn miles on those purchases, which defeats the purpose of the card. You can always carry the Delta card for the places that do take it and use another card elsewhere, but that requires tracking which card to use for each purchase.
Frequently Asked Questions
Can I use Delta miles to book flights on other airlines?
You can transfer Delta miles to Delta's airline partners, which include other carriers, but the transfer rates vary and you lose value in the process. The most straightforward use is booking a Delta flight directly. Transfers are useful if Delta doesn't fly a route you need, but they're not a primary reason to earn the miles.
What happens to my miles if I close the card?
Your miles stay in your Delta account even after you close the card. You can still redeem them for flights as long as your account remains active. However, if your account has no activity for 24 months, the miles expire — closing the card doesn't trigger expiration on its own, but it does mean you're no longer earning new miles to keep the account active.
Do I have to pay the annual fee every year?
Yes, the annual fee posts once per year on your card anniversary. You can downgrade to the no-fee Blue version to stop paying, or you can close the card entirely. American Express doesn't waive the fee, but you can change card versions without penalty.
How many miles do I need for a free flight?
The number of miles required varies by flight, route, and how far in advance you book. A short domestic flight might cost 10,000 to 15,000 miles, while a longer flight or premium cabin seat can cost 50,000 miles or more. Delta's website shows the exact cost for any flight you're considering before you redeem.
Can I earn miles on my credit card purchases if I don't fly Delta?
Yes. You earn miles on every purchase you make with the card, regardless of whether you fly. The miles accumulate in your Delta account and you can redeem them for flights whenever you choose. However, if you never fly Delta or use the miles within 24 months, they expire.