A common point of confusion is that the "vanilla" American Express Platinum Card does not come with a companion certificate. However, the Delta SkyMiles® Platinum American Express Card (a co-branded card) does provide an annual Companion Certificate as a primary benefit. This certificate is awarded each year upon your account renewal and is valid for one round-trip companion "Main Cabin" ticket on a domestic, Caribbean, or Central American flight, provided you pay the government-imposed taxes and fees (usually between $80 and $250). The standard Amex Platinum card instead offers a different set of travel perks, such as the $200 Airline Fee Credit and the International Airline Program, which can provide discounts on a second ticket for premium cabins, but it is not a "free" certificate. If your goal is a guaranteed annual companion pass for domestic travel, the Delta-branded Platinum or Reserve cards are the specific ones you need to look for in 2026.