Last chance for 100,000 (or 200,000) AAdvantage miles

(expires October 31, 2010)

This is your last chance to earn 100,000 American Airlines miles for a credit card bonus, the best best credit card offer I have ever seen.  You will earn 50,000 miles with your first purchase, and another 50,000 miles when you reach $10,000 in spending during the first year.  Unlike the British Airways offer, there is no annual fee for the first year.  An alternative offer is for 75,000 miles for $1,500 in spending.

Assuming you can spend $10,000 in a year, which you can by buying dollar coins from the U.S. mint or other methods), I favor the 100,000 mile offer.  Here's how the math works:

• An extra 25,000 miles (100,000 vs 75,000 miles) for an incremental $8,500 ($10,000 vs. $1,500)
• You will get 25,000 + 8,500 = 33,500 miles for the incremental spend
• 33,500 miles / $8,500 = 3.94 miles per dollar of spending
• I try to redeem miles for $0.015 per mile for travel, so it works out to ~$0.06 per mile of the incremental spending, which is even better than the 5% cash back deals of yore

Keep in mind that you can apply for two of these cards (a Consumer card and a Business one).  Here are links to the 100,000 mile offers (links to the 75,000 mile offer here):

• Visa Consumer
• Amex Consumer
• Visa Business