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Side-by-side

Delta SkyMiles Platinum Amex vs Citi Diamond Preferred Card

Both are well-respected travel cards. The Delta SkyMiles Platinum Amex comes from American Express at $350/yr; the Citi Diamond Preferred Card from Citi at $0/yr. Below: side-by-side specs, an opinionated verdict, and the FAQs people actually ask before applying.

Bottom line

For most people the Delta SkyMiles Platinum Amex is the stronger pick today, the sign-up bonus is meaningfully larger ($990 more in estimated value) than the Citi Diamond Preferred Card's. Get the Delta SkyMiles Platinum Amex first; revisit the Citi Diamond Preferred Card after you've earned that bonus.

FeatureDelta SkyMiles Platinum AmexCiti Diamond Preferred Card
Annual fee$350$0
Sign-up bonus90,000 milesNo welcome bonus; product is a 0% intro APR balance-transfer card with no rewards program
Bonus value (est.)$990-
Min spend to unlock bonus--
IssuerAmerican ExpressCiti
Card categorytravel
Best earning category (Travel)3x1x
Transfer partnersNoneNone
Headline benefits
  • Companion certificate annually
  • 3x on Delta + hotels
  • Free checked bag
  • Main Cabin 1 priority
    Read the full review
    Delta SkyMiles Platinum Amex
    $350/yr · 90,000 miles
    Read the full review
    Citi Diamond Preferred Card
    $0/yr · No welcome bonus; product is a 0% intro APR balance-transfer card with no rewards program

    Editorial take: Delta SkyMiles Platinum Amex

    The companion certificate alone usually covers the annual fee on a single trip. If you fly Delta domestically at least once a year with a partner, this is worth it.

    Editorial take: Citi Diamond Preferred Card

    Common questions

    Which card has the bigger sign-up bonus, Delta SkyMiles Platinum Amex or Citi Diamond Preferred Card?
    The Delta SkyMiles Platinum Amex has a public bonus (90,000 miles, worth roughly $990), while the Citi Diamond Preferred Card doesn't advertise one right now.
    Is the Delta SkyMiles Platinum Amex's $350 annual fee worth it compared to the Citi Diamond Preferred Card?
    At $350/yr, the Delta SkyMiles Platinum Amex is in the mid-fee tier. Compare its specific perks (lounge access, travel credits, primary rental insurance) to the Citi Diamond Preferred Card's, pick the one whose perks you'll actually use.
    Can I have both the Delta SkyMiles Platinum Amex and Citi Diamond Preferred Card?
    Yes, since they're from different issuers (American Express and Citi) the application rules don't conflict. Many points enthusiasts hold both, they pair well when one earns flexible bank points and the other earns a different currency.
    Should I get the Delta SkyMiles Platinum Amex or the Citi Diamond Preferred Card first?
    Get the one whose sign-up bonus you can hit comfortably without overspending. Delta SkyMiles Platinum Amex: no published min spend. Citi Diamond Preferred Card: no published min spend. Pick the easier minimum spend if you're new to points; pick the larger bonus if you have planned big purchases coming up.

    Card details on this page reflect the most recent data we've verified against the issuer's own site. Sign-up bonuses and fees can change at any time, confirm the current offer on the issuer's page before applying.