You cannot "switch" or "product change" from a co-branded Delta SkyMiles Gold American Express card directly to the standard American Express® Gold Card. This is because the Delta cards are part of a specific "co-brand" family, while the standard Gold card is a "Membership Rewards" card. In 2026, Amex rules generally only allow product changes within the same family (e.g., from Delta Gold to Delta Platinum). To get the standard Amex Gold card, you must apply for it as a new account. This is actually a high-value move because it allows you to earn a second welcome bonus. Once you have the new Amex Gold, you can choose to cancel your Delta card or downgrade it to the "Blue" (no-annual-fee) version to keep your credit history alive. Your SkyMiles balance will remain in your Delta account regardless of which Amex card you hold.