United is offering 5000 to 15000 bonus miles for flying its new non-stop between Washington-Dulles and Tokyo between October 28, 2006 and March 31, 2007.
15,000 miles is for paid First Class and Paid Business Class (except for Z fares). 7,500 miles is for Z fare business class and expensive coach fares (Y, B, M, H, Q fares). 5,000 miles for less expensive coach fares (V,W,S,T,K fares).
The bonus can be earned up to 3 times, and flights between December 20, 2006 and January 10, 2007 do not earn the bonus.