Starting Oct. 1, 2014, the cost for Avianca LifeMiles members to buy miles will increase by 10 percent. The increase will raise the price of purchasing 1,000 miles from $30 to $33, plus taxes applicable to each country. LifeMiles offers 100 percent mile bonus purchase promotions from time to time allowing members to purchase miles at half the price of the regular rate. Avianca LifeMiles members were informed of the price increase through a recent email.