United Airlines Launches Month-Long Buy Miles 100% Bonus Sale

Frequent flyers will know that airlines often let you purchase extra miles on their rewards program. For a set fee, customers can buy several thousand miles or points to top up their account and later book reward flights. United Airlines is a carrier that allows members of Mileage Plus to do so. They organize monthly promotions offering a 100% bonus when buying miles or a 50% total award flight cost reduction. This April, the airline is back with another exciting deal.