During the “May Bonus” bonus campaign, which runs from 5/16/17 through 5/26/17 at 11:59:59 pm ET, you can earn a one-time bonus of 500 MileagePlus bonus award miles on qualifying purchases, in addition to the standard MileagePlus miles earned from shopping online through the MileagePlus Shopping mall.
You need to spend at least $200 during the promotion period. Allow 8-10 weeks after the Bonus Period for bonus award miles to post to your MileagePlus Shopping account.
This is not one of the best spending bonuses, but if you can find competitive rates for any of your favorite merchants at MileagePlus Shopping mall, then it could be worth it. Plus this bonus will extend the life of your United miles, if that’s an issue for you.