What the Delta SkyMiles card does and who it's for

The Delta SkyMiles American Express card is a co-branded rewards card that gives you miles for every dollar you spend, plus a sign-up bonus of miles after you meet a spending threshold. You earn one mile per dollar on most purchases and higher rates on Delta tickets and certain categories like restaurants and gas. The card comes with a yearly fee, which you pay whether you use the card or not.

This card makes sense if you fly Delta regularly and want to accumulate miles faster than you would with a regular rewards card. It also makes sense if you're willing to use the card for everyday spending to reach the sign-up bonus quickly. It does not make sense if you rarely fly Delta, because the yearly fee will cost you more than the miles you earn.

American Express issues several versions of this card at different annual fee levels. The most common is the basic version, but there's also a premium version with a higher fee and more benefits. The version you're offered depends on your credit history and income.

Key Takeaways

  • You earn one mile per dollar on most purchases, with bonus miles on Delta flights, restaurants, and gas stations.
  • The card charges an annual fee that you must pay each year to keep the account open, regardless of how much you use it.
  • A sign-up bonus gives you a large number of miles after you spend a set amount within the first few months, but you must meet that spending target to receive it.
  • Miles can be redeemed for Delta flights, seat upgrades, or transferred to Delta's partner airlines, but their value depends on when and where you fly.
  • The card offers perks like a free checked bag on Delta flights and priority boarding, which can save you money if you fly Delta at least a few times per year.

How miles work and what they're actually worth

When you use the Delta SkyMiles card, you earn miles that sit in your Delta account. One mile is not worth one cent — the actual value depends on what you buy with them. A mile might be worth less than one cent if you redeem it for an expensive flight during peak travel times, or it might be worth more than one cent if you use it for a cheap flight or an upgrade.

You can redeem miles for Delta flights, seat upgrades (like moving from economy to first class), or partner airline tickets through Delta's partnerships. You can also transfer miles to hotel and car rental programs, though that's usually not the best use of them. Most people get the most value by using miles for flights they would otherwise buy at full price, especially on routes where Delta charges high fares.

Miles expire if your account is inactive for 24 months, meaning you haven't earned or redeemed any miles in that time. If you fly Delta or use the card at least once every two years, your miles stay active.

Annual fee, sign-up bonus, and the math of whether it pays

The Delta SkyMiles card charges an annual fee, typically in the range of $95 to $550 depending on which version you get. You pay this fee every year on your card anniversary, and American Express will charge it to your card automatically unless you close the account.

To offset this fee, the card offers a sign-up bonus: a large number of miles if you spend a certain amount within the first three months. The bonus is usually worth more than the annual fee in miles, but only if you actually spend enough to earn it. If you don't meet the spending requirement, you get no bonus and you've paid the annual fee for nothing.

Here's the real question: do the miles you earn from everyday spending plus the sign-up bonus cover the annual fee? That depends on how much you spend and how much you value a mile. If you spend $10,000 per year on the card at one mile per dollar, you earn 10,000 miles. If a mile is worth 1.5 cents (a reasonable estimate for most redemptions), that's $150 in value — which might cover the annual fee. But if you spend less, or if you value miles lower, the fee costs you money.

Perks that come with the card

Beyond miles, the Delta SkyMiles card includes benefits that can save you money on Delta flights. The most valuable is a free checked bag on Delta flights for you and up to nine companions on the same reservation. If you fly Delta twice a year, that benefit alone saves you $60 to $70, which covers part of the annual fee.

The card also gives you priority boarding, which means you board before most other passengers and can find overhead bin space for your carry-on bag. You get a discount on Delta purchases like seat upgrades and baggage fees. You earn bonus miles on Delta flights and in certain spending categories like restaurants and gas stations.

The premium version of the card includes additional perks like a statement credit toward Delta purchases, free upgrades on certain flights, and lounge access at some airports. These benefits cost more in annual fees, so they only make sense if you fly Delta frequently and value lounge access.

How the sign-up bonus works and what to watch for

When you open the Delta SkyMiles card, American Express tells you the sign-up bonus: a specific number of miles if you spend a specific amount within a specific timeframe, usually three months. For example, the offer might be 75,000 miles if you spend $3,000 in the first three months.

The spending requirement includes purchases you make with the card, but not balance transfers, cash advances, or fees. If you spend exactly $3,000, you earn the bonus. If you spend $2,999, you don't. American Express deposits the bonus miles into your Delta account automatically after you meet the requirement, usually within one to two billing cycles.

The sign-up bonus is the biggest financial benefit of opening the card, so it's worth planning your spending around it if you can. If you know you're going to spend $3,000 anyway in the next three months — on groceries, gas, bills, or travel — opening the card before you make those purchases lets you earn the bonus without changing your behavior. If you'd have to spend more than you normally would just to reach the threshold, the bonus might not be worth it.

Interest rates, fees, and what happens if you carry a balance

The Delta SkyMiles card charges interest on balances you don't pay off in full each month. The interest rate (called the APR, or annual percentage rate) varies based on your credit score and current market rates, but it's typically in the range of 16% to 24%. This means if you carry a $1,000 balance for a year, you'll pay $160 to $240 in interest alone.

The card also charges fees for specific actions: a cash advance fee if you withdraw cash, a late payment fee if you miss a due date, and a foreign transaction fee if you use the card outside the United States. These fees add up quickly, so the card only makes financial sense if you pay your full balance every month.

If you're considering this card but you sometimes carry a balance, a regular rewards card with no annual fee might be better for you. The interest you'd pay on a carried balance will almost always cost more than the miles you'd earn.

How to decide if this card is right for you

Start by asking yourself three questions: Do I fly Delta at least a few times per year? Am I willing to pay the annual fee? Can I pay off the full balance every month?

If you answered yes to all three, the card probably makes sense. The free checked bag and priority boarding alone save you money on Delta flights, and the miles you earn from everyday spending can cover the annual fee if you spend enough.

If you answered no to any of them, a different card might be better. If you don't fly Delta often, the perks won't save you money. If you're not sure you can pay off the balance every month, the interest charges will erase any value from the miles. If you're unwilling to pay an annual fee, there are rewards cards with no fee that earn cash back or points instead of miles.

Frequently Asked Questions

Do I have to use the card to keep my miles?

No, but your miles will expire if your Delta account is inactive for 24 months. Inactive means you haven't earned or redeemed any miles in that time. Using the card counts as activity, but so does flying Delta or redeeming miles. If you fly Delta or use the card at least once every two years, your miles stay active indefinitely.

What happens to my miles if I close the card?

Your miles don't disappear when you close the card. They stay in your Delta account as long as your account remains active (meaning you use it at least once every 24 months). You can still redeem them for flights or upgrades even after you close the credit card.

Can I use miles to pay for a ticket instead of buying one?

Yes. You can redeem miles for a Delta flight ticket through the Delta website or by calling Delta. The number of miles required depends on the flight, the time of year, and how far in advance you book. Peak travel times (like holidays and summer) usually cost more miles than off-peak times.

Is the sign-up bonus worth it if I don't normally spend that much?

Only if you can reach the spending requirement without changing your habits. If you'd have to spend more than you normally would just to earn the bonus, the miles you gain might not be worth the extra spending and the annual fee. Calculate whether the bonus miles, plus the miles you'd earn from your normal spending, minus the annual fee, comes out ahead.

What's the difference between the basic and premium versions of this card?

The premium version charges a higher annual fee but includes extra perks like a statement credit toward Delta purchases, free seat upgrades on certain flights, and lounge access at some airports. It only makes sense if you fly Delta frequently enough to use those perks regularly.