What the Delta Sky Miles Credit Card is and who it's for
The Delta Sky Miles Credit Card is a co-branded card issued by American Express and Delta Air Lines. It earns miles on every purchase you make, and those miles can be redeemed for Delta flights, seat upgrades, and other travel rewards. The card comes in several versions — the Blue Basic, Blue Plus, Blue Reserve, and Platinum — each with different annual fees, earning rates, and sign-up bonuses.
This card makes sense if you fly Delta regularly, live near a Delta hub, or want to accumulate miles toward a specific trip. It does not make sense if you rarely fly, fly other airlines most of the time, or prefer cash back over miles. The earning rates and perks are built around Delta loyalty, so the value depends entirely on whether you actually use Delta.
Key Takeaways
- The Delta Sky Miles card comes in four versions with annual fees ranging from $0 to $550, and each version earns miles at different rates on Delta purchases and everyday spending.
- You earn a sign-up bonus in miles after you spend a set amount in the first few months, but the bonus value depends on current Delta award prices, which fluctuate.
- Miles can be redeemed for Delta flights, seat upgrades, and partner airline tickets, but award availability is limited and blackout dates may explore depending on the card version.
- The card's value depends on how often you fly Delta and whether you can use the annual benefits like free checked bags and priority boarding before the year ends.
The four card versions and their annual fees
The Blue Basic has no annual fee and earns 1 mile per dollar on all purchases, plus 2 miles per dollar on Delta purchases. This is the entry point if you want to test whether the card fits your spending without paying anything upfront. The downside is minimal perks: you get a free checked bag on Delta flights and priority boarding, but no other benefits.
The Blue Plus costs $95 per year and earns 2 miles per dollar on Delta purchases and 1 mile per dollar on everything else. It includes the same free checked bag and priority boarding as the Basic, plus a $50 statement credit toward Delta purchases every year. If you spend enough on Delta to use that $50 credit, the card effectively costs $45 per year.
The Blue Reserve costs $250 per year and earns 3 miles per dollar on Delta purchases and 1 mile per dollar elsewhere. It adds a $100 annual Delta credit, bringing the net cost to $150. It also includes a companion certificate (one free domestic round-trip ticket when you buy another at full price) and priority boarding upgrades.
The Platinum costs $550 per year and is designed for frequent Delta flyers. It earns 3 miles per dollar on Delta purchases, 1 mile per dollar on other travel and dining, and 1 mile per dollar on everything else. It includes a $200 annual Delta credit, a companion certificate, and Medallion status benefits that waive some of Delta's elite requirements. The $550 fee is only worth it if you fly Delta multiple times per year and can use the companion certificate and annual credits.
How sign-up bonuses work and what they're worth
Each card version offers a sign-up bonus in miles if you spend a certain amount within the first few months — typically $1,000 to $3,000 depending on the card. The bonus itself is stated in miles, not dollars, so a 50,000-mile bonus is not the same as a $500 bonus. The actual cash value of those miles depends on what Delta flights cost at the time you redeem them.
A rough estimate is that Delta miles are worth 0.5 to 1.5 cents per mile, but that range is wide because award prices vary by route, season, and how far in advance you book. A 50,000-mile bonus might be worth $250 on a cheap domestic route or $750 on an expensive international flight. American Express publishes the current bonus offers on their website, and you can check Delta's award chart to see what flights cost in miles before you explore.
The sign-up bonus is the largest chunk of value you'll get from the card in the first year, so it's worth comparing the bonus across the four versions before you decide which one to open. A higher annual fee card might offer a larger bonus, but only if that bonus is worth more than the fee difference.
Earning rates and how miles accumulate
Miles accumulate on every purchase, and the rate depends on which card you have and what you're buying. All versions earn at least 1 mile per dollar on non-Delta purchases. Delta purchases — flights, seat upgrades, baggage fees, and some in-flight purchases — earn at a higher rate: 2 miles per dollar on the Blue Basic, and 3 miles per dollar on the Blue Plus, Blue Reserve, and Platinum.
You also earn miles on everyday spending like groceries, gas, and restaurants, though at the 1-mile-per-dollar rate. This means the card can function as a general rewards card even if you don't fly Delta often, but the earning rate is lower than some cash-back cards. If you're comparing this card to a 2% cash-back card, the Delta card only wins if you value miles at more than 0.5 cents each — which is possible but not may provide.
Miles don't expire as long as you have the card open and earn or redeem at least once every 24 months. If you close the card and don't use it, your miles will expire after 24 months of inactivity. This is a real cost if you accumulate miles and then stop flying Delta.
What you can redeem miles for and how availability works
Miles can be redeemed for Delta flights, seat upgrades (including extra legroom seats), and tickets on partner airlines like Virgin Atlantic, Air France, and KLM. You can also transfer miles to hotel and car rental partners, though the redemption rates are usually worse than booking flights directly. The card does not allow you to convert miles to cash or statement credits.
Award availability is not may provide. Delta uses a dynamic pricing model, meaning the number of miles required for a flight changes based on demand. A flight might cost 25,000 miles on a Tuesday in February and 50,000 miles on a Friday in July. You can search Delta's website to see current award prices before you book, but prices can change after you search.
The Blue Basic and Blue Plus cards have blackout dates and restrictions on award availability, meaning some flights are not available for redemption at any price. The Blue Reserve and Platinum cards have fewer blackout dates and more access to premium cabin awards. This is a meaningful difference if you want to book popular routes or premium cabins — the higher-tier cards give you more options, but they cost more to own.
Annual benefits and how to measure whether they pay for themselves
The free checked bag benefit applies to you and up to eight companions on the same reservation. If you fly Delta twice a year with a companion, that's worth roughly $60 to $80 in checked bag fees. Priority boarding moves you up the queue for seat selection and overhead bin space, which has no direct dollar value but can save you the cost of buying a preferred seat.
The Blue Plus includes a $50 annual Delta credit that covers flights, seat upgrades, or baggage fees. The Blue Reserve and Platinum include larger credits ($100 and $200 respectively). These credits only have value if you actually spend money on Delta in that calendar year. If you don't fly Delta for a year, the credit expires unused.
The companion certificate on the Blue Reserve and Platinum is valuable only if you book a paid ticket and have someone to bring along. A domestic round-trip companion ticket is worth the price of one ticket, which could be $200 to $600 depending on the route and season. If you use it once per year, it covers a significant portion of the annual fee. If you don't use it, the fee is harder to justify.
Comparing the Delta card to other travel rewards cards
The main competitor is the Chase Sapphire Preferred, which earns 2 points per dollar on travel and dining and 1 point per dollar on everything else. Those points can be redeemed for cash, transferred to airline partners (including Delta), or used for travel purchases through Chase's portal. The Sapphire Preferred costs $95 per year and offers more flexibility because you're not locked into one airline.
If you fly multiple airlines, the Sapphire Preferred or a general 2% cash-back card will likely give you more value. If you fly Delta almost exclusively, the Delta card's higher earning rate on Delta purchases and the free checked bag benefit can make up for the lower earning rate on other spending. The decision comes down to whether you're a Delta loyalist or a flexible traveler.
Another option is to skip the annual-fee card entirely and use the no-fee Blue Basic. You'll earn miles more slowly, but you'll avoid the annual fee and can still accumulate toward a future trip. This works if you fly Delta only once or twice per year and don't need the perks.
Frequently Asked Questions
Do I lose my miles if I close the card?
Your miles stay in your Delta SkyMiles account even after you close the card, as long as you have account activity (earning or redeeming) within 24 months. If you don't use the account for 24 months, the miles expire. You can keep the account active by flying Delta, earning miles through a partner, or redeeming miles, even if you don't hold the card.
Can I use miles to book flights for other people?
Yes. You can book award flights for family members or friends as long as you have enough miles in your account. The person flying does not need to be a cardholder. You can add up to eight companions to a single reservation.
What happens if Delta changes the award prices after I search but before I book?
Award prices can change at any time, and Delta does not lock in a price when you search. If you find an award you want, book it when ready. If you wait and the price goes up, you'll need more miles to book the same flight. Some award tickets are non-refundable, so check the terms before you commit.
Is the sign-up bonus worth more than the annual fee in the first year?
Usually yes, but it depends on the card and the current bonus offer. Compare the bonus miles to the annual fee and estimate the miles' value using Delta's award chart. If the bonus is worth more than the fee, the card pays for itself in year one. In year two and beyond, you need to earn enough miles through spending and use the annual benefits to justify keeping the card.
Can I hold more than one Delta Sky Miles card at the same time?
American Express allows you to hold multiple Delta cards simultaneously, though you'll pay the annual fee on each one. Some people hold both the Blue Plus and the Platinum to maximize benefits, but this only makes sense if you fly Delta frequently enough to use both sets of perks and annual credits.