本帖最后由 flynfs 于 2015-5-27 09:36 编辑 RT，截止到6月8号，5月28日前购买额外再省5%https://buymiles.mileageplus.com/united/index_en.htmlFor a limited time, save up to 35% when you buy or give award miles. If you have your sights set on an award trip this summer, take this opportunity to boost your account balance and get to your dream destination sooner.

Buy miles by May 28 and save an extra 5%. • Buy 5,000 – 15,000 miles, save 15%• Buy 16,000 – 35,000 miles, save 20%• Buy 36,000 – 50,000 miles, save 25%• Buy 51,000 – 100,000 miles, save 30%• Buy 101,000 – 150,000 miles, save 35%话说这是因为半年度快到了，航空公司为了做业绩么？