UPDATE: This offer has expired.
Delta is currently offering two bonus promotions for purchased miles:
1. Delta American Express Credit Card Members: UPDATE: This offer has expired. If you hold the Delta SkyMiles Credit Card, you can get a 100% bonus on all purchased miles through December 31. With this promotion, you must purchase the miles in increments of 2,000 points. The minimum amount to purchase is 2,000, while the maximum amount is 60,000 per account. Now with this promotion, each point will cost $0.0175. If you are lucky enough to snag a low level award to Europe for 60,000 points round-trip, this will cost $1,050 – still quite expensive in my opinion and unfortunately difficult to get. I wrote more about the pros/cons of this card last week.
2. Non-Delta American Express Credit Card Members (i.e., EVERYONE!): Through December 22, you can get up to a 75% bonus on all purchased miles. The maximum number of bonus miles you can earn is 45,000 miles.
Overall, it is worth doing a cost analysis of your trip to see if purchasing miles will save you money. The cost to purchase miles is $0.035/mile, plus plus a 7.5% Federal Excise Tax.
If you were thinking of purchasing miles already, then this is great, but in most cases can still be extremely costly. The best value to purchase points is for international business/first class redemption. With Delta inflating the number of points needed to redeem, I am skeptical of purchasing Delta points without an immediate redemption opportunity in mind.