United MileagePlus Offers Up to 45% Off Purchased Miles Until August 20, 2026

United Airlines MileagePlus has rolled out a new limited-time promotion on purchased miles that runs from July 14 through August 20, 2026. Members of MileagePlus may see different individualized offers, with discounts primarily ranging between 40% and 45% off the normal purchase price of miles. Eligible members must log into their accounts to view the specific deal available to them. Buying at least 30,000 miles in a single transaction is required to unlock the best pricing tiers.

Under standard conditions, MileagePlus sells miles at 3.5 cents each, plus a 7.5% federal excise tax. With the current promotion, the effective cost can drop to as low as approximately 2.07 cents per mile for a 45% discount, or even 1.88 cents per mile if a 50% discount is offered to select members. For example, purchasing 50,000 miles with a 40% discount costs about $1,128.75. These discounted rates offer a more economical pathway to accrue miles for travelers planning upcoming award travel.

MileagePlus imposes purchase limits designed to moderate miles acquisition. Accounts can buy no more than 50,000 miles within any rolling 90-day window, and up to 200,000 miles per calendar year including any bonuses. This ensures that even with promotions granting bonus miles, the maximum miles credited per period cannot exceed these limits. After purchase, mileage crediting to an account may take up to 48 hours to complete.

When it comes to payment, miles purchases are processed by points.com and do not count as airfare purchases for credit card rewards. Consequently, it is advisable to use cards where meeting minimum spending requirements or earning flexible points on everyday spending is desired, enhancing the value of the transaction beyond just the miles themselves.

The principal strategic advantage of buying United MileagePlus miles lies in redeeming them for United Polaris business class redemptions on long-haul flights. United limits much of its premium award inventory to MileagePlus members, particularly those holding co-branded credit cards or elite status, making these miles especially valuable in accessing premium cabin seats aboard United’s broad global network. While the Polaris product may not be the absolute pinnacle in comfort, it is a practical option for premium international travel in and out of major US hubs.

Outside of United flights, MileagePlus miles can be used for travel on all Star Alliance member airlines, as well as several United partners such as Aer Lingus and Azul. However, redemption values on partner airlines are generally less competitive, and other Star Alliance loyalty programs, like Air Canada Aeroplan and Avianca Lifemiles, often provide better award rates and promotional sales. Aeroplan’s stopover policies and Lifemiles’ typically lower cost points are often cited as more advantageous for award redemptions compared to MileagePlus.

MileagePlus miles do not expire, meaning members can hold onto their balances indefinitely without needing account activity. Additionally, miles can be earned through Chase Ultimate Rewards transfers at a 1:1 ratio, complementing purchases and flight accruals. This makes MileagePlus a versatile program for accumulating miles for various award purchase strategies.

While the promotional pricing presents an opportunity to acquire MileagePlus miles at a discount, industry observers caution against speculative purchases. The best use case is a planned award ticket, particularly in Polaris business class, where these miles provide maximum redemption value. Buying miles without a clear redemption in mind is generally not advised given other programs that offer more favorable rates or more flexible award policies.