Limited-Time Offer: Earn 3x Miles on Gas This Summer With Your Delta SkyMiles Card

Updated: June 16, 2025, 3:26pm CDT

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Amex Offer: Earn 3x SkyMiles at U.S. Gas Stations
Final Thoughts

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Filling up your tank this summer with a Delta Amex card just got a lot more rewarding.

Now through August 31, 2025, eligible Delta cardmembers can earn 3 bonus miles per dollar spent at U.S. gas stations, up to a maximum of 5,000 bonus miles. Enrollment is required for this new Amex Offer, so be sure to activate it early to maximize your summer rewards potential.

Let’s dive into the details of this latest Delta SkyMiles promotion.

Amex Offer: Earn 3x SkyMiles at U.S. Gas Stations

All Delta SkyMiles Amex cards issued in the U.S. are eligible for this latest promotion. To enroll, log into your American Express account and toggle to your Delta card (if you have multiple Amex cards).

Amex Account — Select your Delta SkyMiles card first. Image Credit: Amex

You can find this promotion under your Amex Offers and enroll in it. Once you activate it, you can find the ongoing offer under the Added to Card section.

Amex Offer Delta Skymiles Cards Gas — This offer is available through the end of August. Image Credit: American Express

Only purchases from U.S. gas stations will count, but this offer specifically excludes “gas stations located on-site at superstores, supermarkets, and warehouse clubs.” You can’t pay with an Amex card at Costco gas stations anyway, but keep in mind that fill-ups at Sam’s Club and Walmart fuel centers also aren’t eligible for this offer.

Hot Tip:

Upgraded Points values Delta SkyMiles at 1.2 cents apiece. By enrolling in this Amex Offer, eligible cardholders will effectively get a 3.6% return at eligible U.S. gas station purchases this summer, with a maximum of 5,000 miles earned!

Who’s Eligible for This Amex Offer?

This Amex Offer should be available to any Delta cardholder, as long as the card was issued in the U.S. The Delta Amex portfolio includes 4 personal cards and 3 business cards.

For instance, with the Delta SkyMiles^® Platinum American Express Card, you can normally earn 3x miles on Delta purchases and hotels booked directly, 2x miles at restaurants worldwide (including takeout and delivery in the U.S.), and at U.S. supermarkets, and 1x miles on all other eligible purchases.

Amex Delta Promotion — Email promotion sent to cardholders today, June 16, 2025. Image Credit: American Express

With the addition of this temporary Amex Offer, you can effectively earn 3x miles on up to ~$1,667 spent at U.S. gas stations through August 31, 2025.

It can take up to 90 days for the bonus miles to be credited to your Delta SkyMiles account, but the issuer usually posts the rewards much faster than this.

Final Thoughts

Delta SkyMiles Amex cards are featuring a valuable new promotion to earn extra rewards for your summer road trips. Enrollment is limited, so if you see the offer available, be sure to add it to your card quickly to earn up to 5,000 bonus miles at U.S. gas stations.