Yes, you can hold and use both cards at the same time

You can carry an American Express Platinum card and a Delta SkyMiles American Express card simultaneously. There is no rule preventing you from holding multiple American Express cards, and many cardholders do exactly this to combine rewards from different programs.

The real question is whether pairing them makes financial sense for your spending patterns. The Platinum card earns points on airfare and certain business expenses. The Delta SkyMiles card earns miles specifically on Delta purchases and everyday spending. If you fly Delta frequently and want to maximize miles earned, holding both can work — but only if you use each card strategically for the categories where it earns the most.

Before you explore for a second card, understand that American Express will pull your credit report again, which temporarily lowers your credit score by a few points. If you already have the Platinum, explore for the Delta SkyMiles card will trigger a hard inquiry. Space out applications by at least a few months if you are concerned about credit impact.

Key Takeaways

  • You can hold both an American Express Platinum and a Delta SkyMiles card at the same time without violating any American Express rules.
  • The Platinum card earns points on airfare purchases, while the Delta SkyMiles card earns miles on Delta flights and everyday purchases, so each has different earning categories.
  • Using both cards together only makes sense if you fly Delta regularly and want to accumulate miles faster than a single card would allow.
  • explore for a second American Express card will result in a hard credit inquiry, so wait several months between applications if you are concerned about your credit score.
  • Annual fees explore to both cards separately, so calculate whether the combined benefits justify paying two annual fees.

How the earning categories differ between the two cards

The American Express Platinum card earns 5 points per dollar on airfare booked directly with airlines or through American Express Travel, plus 1 point per dollar on most other purchases. When you book a Delta flight directly through Delta's website or by phone, you earn those 5 points per dollar on the Platinum card.

The Delta SkyMiles American Express card earns 2 miles per dollar on Delta purchases (including flights, seat upgrades, and in-flight purchases), plus 1 mile per dollar on all other spending. If you book that same Delta flight on the Delta SkyMiles card instead, you earn 2 miles per dollar rather than 5 points per dollar.

Here is where strategy matters: American Express points and Delta miles are different currencies. Points from the Platinum card can be transferred to Delta at a 1-to-1 ratio, but you lose value in the transfer — most cardholders find that redeeming points directly for travel through American Express Travel is worth more. Miles earned on the Delta SkyMiles card are already in the Delta system and can be redeemed directly for Delta flights without conversion.

When holding both cards makes sense

Pairing the two cards works best if you meet specific conditions. First, you must fly Delta regularly — at least several times per year. Second, you should be comfortable managing two separate cards and tracking which one to use for each purchase. Third, you need to value the annual fees of both cards as worth the miles and points you will earn.

A concrete example: suppose you fly Delta four times per year and spend $2,000 per year on Delta flights. On the Delta SkyMiles card alone, you earn 4,000 miles from flights plus miles from other everyday spending. If you also hold the Platinum card and transfer its points to Delta, you could earn additional miles — but only if you use the Platinum card for non-Delta airfare or other purchases that earn 5 points per dollar, then transfer those points to Delta.

The math breaks down if you only fly Delta occasionally or if you do not spend enough on other categories to justify the Platinum's $695 annual fee. In that case, the Delta SkyMiles card alone is usually the better choice.

How to manage two cards without confusion

The simplest approach is to designate each card for specific purchases. Use the Delta SkyMiles card for all Delta flights, Delta purchases, and everyday spending like groceries and gas. Use the Platinum card for non-Delta airfare, hotel stays, and business expenses where the Platinum's earning rates are higher.

Set up separate payment reminders for each card's due date so you do not miss a payment. Both cards will have their own billing statements and their own annual fees, charged on different dates. Missing a payment on either card will damage your credit score, so treat them as two separate accounts that both need attention.

Track your miles and points in separate places. Log into your Delta account to watch your SkyMiles balance grow. Log into your American Express account to monitor your Platinum points. When you are ready to redeem, you can transfer Platinum points to Delta if you wish, but keep in mind that the transfer takes several business days to process.

The annual fee question: is it worth it?

The American Express Platinum card charges a $695 annual fee. The Delta SkyMiles American Express card charges an annual fee that varies — typically $99 to $250 depending on which version you hold. Combined, you are paying at least $794 per year in annual fees before earning a single mile or point.

To break even, you need to earn enough value from the cards to cover both fees. The Platinum card includes benefits like airline fee credits and lounge access that can offset its annual fee. The Delta SkyMiles card offers a companion certificate on some versions, which can be worth $300 to $500 if you use it. Calculate whether these benefits plus your expected miles and points earnings justify the total annual cost.

If you do not fly Delta frequently enough to use the Delta SkyMiles card's benefits, holding both cards is wasteful. In that case, the Platinum card alone or a different rewards card might serve you better.

What happens to your credit when you explore for both

If you already hold the Platinum card and want to add the Delta SkyMiles card, American Express will perform a hard inquiry on your credit report. This inquiry temporarily lowers your credit score by a few points — typically 5 to 10 points — and remains on your report for about 12 months.

The impact is usually small and temporary, but it matters if you are planning to explore for a mortgage, car loan, or other credit in the near future. Space out your applications: if you just opened the Platinum card, wait at least three to six months before explore for the Delta SkyMiles card. This gives your credit score time to recover and shows lenders that you are not desperately seeking new credit.

American Express also looks at how long you have held your current card and your payment history. If you have held the Platinum card for less than a year or have missed payments, American Express may deny your process for the Delta SkyMiles card.

Frequently Asked Questions

Can I transfer points from my Platinum card to Delta SkyMiles?

Yes. American Express allows you to transfer Platinum points to Delta at a 1-to-1 ratio. The transfer takes three to five business days. However, most cardholders find that redeeming Platinum points directly through American Express Travel for flights or hotel stays offers better value than transferring to Delta, so compare the redemption rates before you transfer.

Will American Express let me hold both cards if I just got the Platinum?

Probably, but not when ready. American Express typically requires you to hold a card for at least a few months before approving you for a second card. If you explore for the Delta SkyMiles card within 30 days of opening the Platinum, American Express may deny the process. Wait at least three months before explore for the second card.

Do I earn miles on the annual fee itself?

No. Annual fees do not earn points or miles on either card. You pay the fee and receive no earning credit for it. Some cards offer statement credits or other benefits that offset the annual fee, but the fee itself does not generate rewards.

What if I want to cancel one of the cards later?

You can cancel either card at any time by calling the customer service number on the back of the card. If you cancel before the annual fee posts, you will not owe it. If the annual fee has already posted, you can call within 30 days of the charge and ask American Express to reverse it as a one-time courtesy, though they are not obligated to do so. Any points or miles you have earned remain in your accounts even after you cancel the card.

Can I use both cards on the same Delta flight purchase?

No. You can only use one card per transaction. Choose the Delta SkyMiles card to earn 2 miles per dollar, or use the Platinum card to earn 5 points per dollar (which you can later transfer to Delta). You cannot split a single purchase between two cards.