American Express has launched elevated welcome offers on three Delta personal cards. The Delta SkyMiles Gold is offering as high as 80,000 miles plus a $250 statement credit after spending $3,000 in 6 months, up from the standard 50,000 miles after $2,000 in spending. The Delta SkyMiles Platinum is offering as high as 90,000 miles plus a $300 statement credit after spending $4,000 in 6 months, compared with the standard 60,000 miles after $3,000 in spending. Unfortunately, Amex has added "as high as" language to many of its signup bonus offers, so you won't know your exact offer until you log in, if you already have an Amex account, or complete the application. The Delta SkyMiles Reserve has the most interesting offer, with 50,000 miles, with no "as high as" language, plus two round-trip Delta Comfort flight certificates after spending $10,000 in 6 months. That's actually 20,000 fewer miles and twice the spending requirement of the standard 70,000-mile offer, but the two certificates could easily make up the difference if you can maximize them. They're valid for Delta Comfort or Main round-trip flights within the lower 48, Puerto Rico, and U.S. Virgin Islands, with no listed maximum ticket value. All three offers expire November 4, 2026.