Get a 15% transfer bonus when you transfer American Express Membership Rewards to Avianca Lifemiles.

I’m just going to come straight out and tell you not to do this unless you are an unbelievably experienced Avianca Lifemiles user and know exactly what you need more miles for. They also have transfer bonuses all the time, almost always more than 15%.

The transfer bonus is paltry at 15%, the Lifemiles program just did a major unannounced devaluation, and they are no longer the only option for avoiding surcharges on Star Alliance flights (hello Aeroplan).

Also see: Downsides of LifeMiles program.