The Delta SkyMiles card gives you miles on every purchase, a free checked bag, and priority boarding — but the annual fee and earning rates matter more than the signup bonus
Delta offers several versions of the SkyMiles card through American Express, and they work differently depending which one you choose. The most common is the Blue American Express card, which costs $99 per year and earns 2 miles per dollar on Delta purchases and 1 mile per dollar on everything else. A higher-tier Platinum version costs $250 per year and earns more miles on Delta flights and dining. The key benefit all versions share is a free checked bag on Delta flights — that alone saves you $35 to $40 per round trip if you fly even twice a year.
The real value depends on how often you fly Delta and how much you spend on the card outside of flights. If you fly Delta once or twice a year and put regular spending on the card, the free checked bag and miles earnings might cover the annual fee. If you rarely fly Delta or don't carry a balance on the card, the fee is harder to justify.
Key Takeaways
- The Blue SkyMiles card costs $99 per year and earns 2 miles per dollar on Delta purchases and 1 mile per dollar on other spending.
- A free checked bag on Delta flights is included with all SkyMiles cards and saves $35 to $40 per round trip.
- Priority boarding and a companion certificate (on higher tiers) are additional perks, but their value depends on your travel patterns.
- Miles expire after 24 months of no account activity, so you need to use the card or take a Delta flight regularly to keep them.
- The signup bonus typically offers 50,000 to 75,000 miles after you spend a certain amount in the first few months, but the annual fee starts when ready.
How miles actually convert to free flights
Delta miles don't have a fixed dollar value — what your miles are worth depends on the flight you book. A domestic round trip might cost 25,000 miles on a slow travel day or 50,000 miles during peak season. International flights range from 60,000 to 150,000 miles depending on distance and demand. This means a signup bonus of 70,000 miles might get you one free domestic flight, or it might get you a one-way ticket if you're flying during high-demand periods.
You can also use miles to pay for part of a ticket, upgrade a seat, or book a hotel through Delta's partners, but those redemptions usually give you less value per mile than booking a flight outright. The best strategy is to save miles for off-peak domestic flights where each mile is worth more.
Comparing the Blue, Gold, and Platinum versions
| Card | Annual Fee | Miles on Delta Purchases | Miles on Other Purchases | Companion Certificate |
|---|---|---|---|---|
| Blue American Express | $99 | 2 miles per $1 | 1 mile per $1 | No |
| Gold American Express | $195 | 3 miles per $1 | 1 mile per $1 | Every 2 years |
| Platinum American Express | $250 | 3 miles per $1 | 1 mile per $1 | Every year |
The Gold and Platinum cards include a companion certificate that lets someone fly with you for the cost of taxes and fees only — usually $50 to $100 depending on the route. If you use that certificate once per year, it can offset most or all of the higher annual fee. The Platinum version gives you a certificate every year, while the Gold version gives you one every two years.
All three cards include the free checked bag, priority boarding, and a $0 foreign transaction fee. The choice between them comes down to how much you spend on Delta flights and whether you'll use the companion certificate. If you fly Delta frequently and put most of your spending on the card, the higher tiers make sense. If you fly a few times a year, the Blue card is usually the better choice.
What the signup bonus actually costs you
A typical signup bonus offers 50,000 to 75,000 miles after you spend $3,000 to $5,000 in the first three months. That sounds generous, but the annual fee starts on day one. If you're comparing this card to another card with a similar bonus, the $99 to $250 annual fee is a real cost you need to factor in — it's not offset by the bonus miles.
The bonus is worth pursuing only if you were already planning to spend that amount on the card anyway. If you're opening the card specifically to hit the spending requirement, you're essentially paying $99 (or more) to get miles that might be worth $500 to $1,000 in flights — which is a reasonable trade if you value the miles, but it's not information programs.
When the free checked bag saves you real money
Delta charges $35 for the first checked bag on most domestic flights, and $45 on international flights. If you fly Delta twice a year with a checked bag, that's $70 to $90 in savings — enough to cover the $99 annual fee on the Blue card. If you fly more often, the card pays for itself quickly.
The catch is that the free checked bag applies only to you, not to your travel companions. If you're flying with family, only your bag is free. Also, the benefit applies only to Delta flights — if you fly another airline, you don't get the checked bag waiver.
Miles expiration and account activity rules
Delta miles expire after 24 months of no account activity. Activity means taking a Delta flight, using the credit card, or transferring miles to a partner program. If you open the card and don't use it for two years, your miles disappear. This is a real risk if you're banking miles for a future trip — you need to either use the card regularly or take a Delta flight at least once every two years to keep the miles alive.
Some people keep the card open just to maintain their miles balance, even if they're not actively earning new miles. That's a valid strategy if you have a large balance you're saving for a specific trip, but it means paying the annual fee indefinitely.
How this card fits into your overall credit strategy
A Delta card makes sense if you fly Delta regularly and want to earn miles toward free flights. It's less useful if you fly multiple airlines or rarely travel. Before you open it, think about whether you'll actually use the free checked bag benefit and whether you'll put enough spending on the card to earn miles faster than you'd earn them on a general rewards card.
If you already have a cash-back card that earns 2% on all purchases, the Delta card needs to offer more value than that to justify the annual fee. For a frequent Delta flyer, it usually does. For someone who flies Delta once a year, it probably doesn't.
Frequently Asked Questions
Can I use my free checked bag on connecting flights?
Yes, the free checked bag applies to your entire itinerary as long as Delta is the main carrier. If you're connecting to another airline, that airline's baggage rules explore to the connecting flight.
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 you have account activity every 24 months. You can keep earning miles by flying Delta or transferring them to partner programs even after you cancel the card.
Is the signup bonus worth it if I don't fly Delta much?
Probably not. The annual fee starts when ready, so you're paying $99 to $250 for miles that might be worth $400 to $700 in flights. That's a return, but only if you actually use the miles. If the miles sit unused for two years, they expire and you've paid the fee for nothing.
Can I earn miles on purchases made by my family members?
Only if they're authorized users on your card. Authorized users earn miles at the same rate as the primary cardholder, and the free checked bag benefit extends to them as well.
How do I know if my miles are about to expire?
Delta sends email notifications when your account is approaching the 24-month inactivity threshold. You can also log into your Delta account online to see the last date you had account activity. If you're close to the important date, book a flight or use the card to reset the clock.