What Delta's Platinum Amex Gets You for $350

The Delta SkyMiles Platinum American Express is a mid-tier co-branded card aimed at travelers who fly Delta enough to justify a $350 annual fee. Its headline benefit is an annual companion certificate: after each account renewal, a cardholder can buy one adult round-trip main cabin ticket and pay only taxes and fees for a second ticket. That certificate covers the 50 U.S. states, the Caribbean, Central America and Mexico, but it excludes basic economy and works only in specific main cabin fare classes — L, T, U, V and X.

Beyond the companion certificate, the card offers two free checked bags for the cardmember and up to eight companions on the same reservation, with the first bag free worldwide and the second free on domestic U.S. flights. Cardholders also get Zone 5 priority boarding, a 15% discount on Delta award redemptions through the TakeOff 15 perk, and 20% off inflight purchases. For travelers pursuing elite status, the card provides 2,500 Medallion Qualification Dollars at the start of each qualification year and one MQD for every $20 spent.

The card earns 3 miles per dollar on Delta and direct hotel purchases, 2 miles per dollar at restaurants worldwide and U.S. supermarkets, and 1 mile per dollar elsewhere. Delta SkyMiles are valued at about 1.2 cents each in TPG's September 2026 estimates, which translates to roughly 3.6% back on Delta and hotel spending, 2.4% on dining and supermarkets, and 1.2% on everything else. A current welcome offer can reach 90,000 bonus miles plus a $300 statement credit after spending $4,000 in the first six months.

Where the Delta Platinum Amex Pays Off — and Where It Doesn't

Why the companion certificate is the make-or-break benefit

The $350 fee is easiest to justify when the companion certificate is used on an expensive domestic round-trip. Because it applies only to main cabin fares in classes L, T, U, V or X, it cannot be used on basic economy and may not be available on every date. A single high-priced ticket for a companion can exceed the annual fee, but travelers who rarely fly Delta with a companion will struggle to recover the cost.

Medallion status, but not a fast track by itself

The automatic 2,500 MQDs and the one MQD per $20 spent can help a loyal Delta flyer reach Medallion status without relying solely on flying. That makes the card useful for people who already have status or are close to a threshold, but the benefit has little value for infrequent Delta passengers. It is effectively a loyalty accelerator, not a standalone reason to take the card.

Where the earning rates fall short

At 1.2 cents per SkyMile, the card's returns are below many transferable-points cards, especially for everyday spending. Delta's dynamic pricing for awards — where redemption rates move with demand rather than a fixed chart — is the main reason the currency is worth less. Redemptions for premium drinks, hotels or rental cars are generally poor value, though flexible-date award searches can still uncover solid deals.

Where the Reserve enters the discussion

For Delta loyalists who care about Sky Club access or a first-class companion certificate, the $650 Delta SkyMiles Reserve American Express is the premium alternative. The Platinum card offers no Sky Club access and its certificate is limited to the main cabin. The Reserve's higher fee only makes sense if those two benefits would otherwise be purchased separately.

How to Decide If the Delta Platinum Card Fits Your Wallet

  • Use the companion certificate on a pricey domestic route. Because it covers main cabin fares in classes L, T, U, V or X, a second ticket for $200 or more can immediately offset much of the $350 annual fee — but check the fare class before booking.
  • Treat the card as a Delta loyalty tool, not an everyday earner. TPG's 1.2-cent SkyMiles valuation means the 3x Delta/hotel category returns about 3.6%, the 2x dining/supermarket category about 2.4%, and everything else about 1.2% — below many transferable-points cards.
  • Apply only while the elevated offer is available. The current up-to-90,000-mile bonus plus $300 statement credit after $4,000 in six months is worth up to $1,380 by TPG's valuation, but eligibility for the maximum may vary.
  • Skip the Platinum if lounge access matters. Delta Sky Club access and the enhanced companion certificate are exclusive to the $650 Delta Reserve; the Platinum's certificate cannot be used in first class or Delta Comfort+.
  • Consider the Delta Gold for a cheaper baggage benefit. It offers two free checked bags with a $0 introductory annual fee in the first year and $150 thereafter, though it does not include a companion certificate.