United is offering double award miles on United and United Express flights anywhere within the 48 continental United States through November 21, 2013.
Just Register, purchase, and complete travel between October 21st and November 21, 2013, in order to qualify.
Members can earn double award miles on base miles earned for travel in F, A, J, C, D, Z, P, Y, B, M, E, U, H, Q, V, W, and S fare classes.
You can earn these bonus miles on an unlimited number of flights.
The bonus miles will be posted to your MileagePlus account within 6 to 8 weeks after the end of the promotional period.
Check out this United MileagePlus Rewards Card to earn extra bonus miles as well.
Get double miles on United and United Express flights for a limited time.