All new Mileage Plus Dining members who enroll online between Oct. 1 and Nov. 30, and all existing Mileage Plus Dining members who have not earned any miles with Mileage Plus Dining between the beginning of the year and Sept. 30 and who have registered online to participate at http://www.united.com/dining/20miles can double their Mileage Plus Dining bonus miles when they dine twice during the same period.

Eligible members must dine at any participating Mileage Plus Dining restaurant before Nov. 30 and pay for their meal with a credit card that has been registered to their Mileage Plus Dining membership. The first two eligible Mileage Plus Dining dines that occur before Nov. 30 will receive double miles — up to 20 miles per dollar spent on the entire bill — up to a maximum total payout of 5,000 bonus miles.