Last week United sent out a targeted buy miles bonus offer and as of today have now opened it up to all members. You can receive up to 100% bonus miles if you buy miles by May 14.
Up to a 100% bonus when you buy MileagePlus Miles. Buy miles here. Until May 14, 20
Buy 5,000 – 14,000 miles | Receive 30% bonus miles
Buy 15,000 – 39,000 miles | Receive 50% bonus miles
Buy 40,000 – 87,500 miles | Receive 100% bonus miles
Image via United/Points.com