The Delta card makes sense only if you fly Delta regularly and spend enough to cover the annual fee
Delta offers several co-branded credit cards through American Express, each with an annual fee ranging from $0 to $550 depending on the version. The card pays you in Delta miles for every dollar you spend, but those miles are only valuable if you actually use them on Delta flights. If you fly other airlines, book through third-party sites, or rarely travel, the miles accumulate slowly and the annual fee becomes pure cost.
The real question is not whether Delta miles are valuable in theory — it is whether you will redeem them before they expire or sit unused in your account. Many people sign up for the bonus miles, never reach the spending threshold to make the card worthwhile, and let the annual fee renew without thinking about it.
Key Takeaways
- Delta cards charge annual fees of $0 to $550, and you need to spend enough on the card to earn miles that offset that fee through actual Delta flights.
- The welcome bonus (typically 50,000 to 75,000 miles) is the biggest financial benefit, but it only matters if you can redeem those miles on a real flight within the expiration window.
- You earn 1 to 3 miles per dollar depending on the card tier and purchase category, which means you need to spend $10,000 to $30,000 annually just to break even on a $100 annual fee.
- Delta miles have no fixed cash value and their worth depends on the flight you book — a mile might be worth 0.5 cents on a short flight or 2 cents on a long international route.
- If you fly other airlines or book through Google Flights, Kayak, or other search engines, you earn no miles and should not carry this card.
How much you actually earn in miles and what they cost
The Delta SkyMiles card earns 1 mile per dollar on most purchases. The Delta Reserve card earns 3 miles per dollar on Delta purchases and 2 miles per dollar on restaurants, gas, and travel. The Delta Platinum card sits in the middle at 2 miles per dollar on Delta purchases and 1 mile per dollar elsewhere.
To understand whether the card pays for itself, you need to know what a mile is worth to you personally. Delta does not publish a fixed value. A mile might be worth 0.5 cents if you redeem it on a short domestic flight during peak season, or 2 cents if you use it on a premium cabin seat on an international flight. The airline sets the mile cost for each flight, and it changes constantly.
Here is a concrete example: if you spend $10,000 per year on the Delta SkyMiles card (which has a $95 annual fee), you earn 10,000 miles. If those miles are worth 1 cent each on average, you have earned $100 in value — barely covering the fee. If they are worth 0.5 cents each, you have lost money. If you spend $20,000 annually, you earn 20,000 miles, which at 1 cent per mile covers the fee and leaves you $105 ahead.
The welcome bonus is where most of the value lives
When you open a Delta card, you receive a one-time bonus of 50,000 to 75,000 miles (the exact amount varies by card and changes periodically). This bonus is the single largest source of value from the card. A 75,000-mile bonus is worth somewhere between $375 and $1,500 depending on how you redeem it, but only if you actually book a flight and use those miles.
The catch is that you must meet a spending requirement to unlock the bonus — usually $3,000 to $5,000 within the first three months. If you cannot spend that much in three months through normal purchases, you should not open the card. Manufactured spending (buying gift cards or other products just to meet the threshold) defeats the purpose.
Many people earn the bonus, book one flight, and then let the card sit in a drawer while the annual fee renews year after year. If you do not plan to use the miles within 12 months, the bonus loses its value quickly because you will be paying the annual fee for a card that is not earning you anything.
When the annual fee is not worth paying
The Delta SkyMills card charges $95 per year. The Platinum charges $195. The Reserve charges $550. Each higher tier offers more miles per dollar and additional perks like free checked bags and priority boarding, but those perks only matter if you fly Delta frequently.
If you fly Delta fewer than four times per year, the annual fee is almost certainly not worth it. A single checked bag fee is $35 to $40 per flight, so the free checked bag benefit on the Reserve ($550 fee) would need to save you $550 per year in bag fees alone — that is roughly 14 round trips. Most people do not fly that much.
If you fly Delta once or twice per year, the base SkyMiles card with a $95 fee might make sense only if you spend enough on everyday purchases (groceries, gas, restaurants) to earn miles that you will actually redeem. But if you do not fly Delta, or if you book through Google Flights or Kayak instead of directly through Delta, you earn zero miles on those bookings and the card becomes a pure cost.
How Delta miles compare to cash back cards
A standard cash back card earns 1.5% to 2% cash back on all purchases with no annual fee. That means $10,000 in spending earns $150 to $200 in actual cash. A Delta card earning 1 mile per dollar on the same $10,000 generates 10,000 miles, which might be worth $50 to $200 depending on the flights you book — and you still pay the $95 annual fee.
The Delta card only wins if you value the miles higher than the cash back rate and you actually use them. If you are the type of person who books flights months in advance and hunts for the best redemption value, the Delta card might work. If you book flights last-minute or rarely travel, a cash back card is simpler and more reliable.
One exception: if you have a specific trip planned and you know exactly how many miles you need, you can calculate whether the card's bonus plus your spending will cover that trip cheaper than paying cash. But this requires advance planning and honest math about what the miles are worth on your specific flights.
What happens to your miles if you close the card
Your Delta miles do not disappear if you close the credit card. They stay in your SkyMiles account as long as you have account activity at least once every 24 months. Account activity includes flying Delta, earning miles through the card, or even just logging into your account. If you go 24 months with no activity, Delta will close your account and your miles expire.
This means you can open the card, earn the bonus, book a flight, and then close the card before the second annual fee hits — as long as you use your miles within 24 months. But if you earn miles and never redeem them, you are paying the annual fee to hold onto currency that may expire.
Red flags that this card is not for you
Do not open a Delta card if you fly other airlines regularly. Miles earned on non-Delta flights through partner airlines are rare and usually require specific promotions. If you are a United or American Airlines frequent flyer, those airlines' cards will serve you better.
Do not open the card if you book flights through search engines like Google Flights, Kayak, or Expedia. You earn miles only when you book directly through Delta.com or through a travel agent. Third-party booking sites earn you nothing, even if the flight is operated by Delta.
Do not open the card if you cannot spend at least $3,000 in the first three months to unlock the welcome bonus. The bonus is the main financial benefit, and without it the card is just an expensive way to earn miles slowly.
Do not open the card if you have no flights planned in the next 12 months. Miles expire after 24 months of inactivity, and the annual fee will renew before you have a chance to use them.
Frequently Asked Questions
Can I use Delta miles on other airlines?
Delta miles can be transferred to partner airlines like Air France, KLM, and Virgin Atlantic, but the transfer rate is usually unfavorable — you lose 25% to 50% of the miles' value in the transfer. For most people, redeeming miles directly on Delta flights is the best use.
What is the difference between the SkyMiles, Platinum, and Reserve cards?
The SkyMiles card ($0 annual fee) earns 1 mile per dollar and is best for occasional flyers. The Platinum ($195 fee) earns 2 miles per dollar on Delta purchases and includes a free checked bag. The Reserve ($550 fee) earns 3 miles per dollar on Delta purchases and includes premium perks like lounge access. Choose based on how often you fly and whether the perks save you money.
Should I open the card just for the welcome bonus?
Yes, if you can meet the spending requirement in three months and you have a flight booked within 12 months to use the miles. Close the card before the second annual fee hits. But if you have no flights planned, the bonus miles will expire before you can redeem them.
Do I earn miles if I book a Delta flight through a travel agent?
Yes, you earn miles on flights booked through a travel agent as long as the agent books through Delta's system. You do not earn miles if you book through Google Flights, Kayak, Expedia, or other third-party sites, even if the flight is operated by Delta.
What happens if I miss the spending requirement for the welcome bonus?
You do not receive the bonus miles. You will still have the card and can earn miles at the standard rate (1 mile per dollar), but you lose the largest financial benefit. If you cannot meet the requirement, you should not open the card.