Heads up, United flyers! Need a few more miles to snag that dream award ticket? United is running a sale on MileagePlus miles through December 31, 2025. You could score up to an 85% bonus when you buy miles, potentially dropping the price to around 2.03 cents per mile. Why should you care? Well, buying miles can be a great way to top off your account for a specific redemption, especially if you're just short. However, it's crucial to do the math! Buying miles rarely makes sense unless you have a specific, high-value award in mind. Think business class to Europe or a fancy hotel stay. Otherwise, you're likely better off just paying cash for your ticket. Before you jump in, compare the cost of buying the miles needed for your award versus simply purchasing the ticket outright. Also, remember that award availability can change quickly, so make sure the award you want is actually available before you buy a bunch of miles. Happy travels, and spend those miles wisely!