I just came back to the U.S. from S. Pacific using *-RTWONE.

I just checked my ual.com's mileage statement and to my surprise, my UA portion states that the the segement is "K-Class" instead of "Y-Class."

I thought that the listing "K-Class" only appeares if we fly w/ tickets other then Y,B,M, and H fare tickets.

As *-RTWONE is booked under farecode "B," is this a mistake which I should point out to MP or if it is ok? I am bit concerned as I used one of this portion for qualifying *-55,555 promotion.

Sorry if this topics has been discussed before. I could not find it in the search and this is my first time using *-RTW tickets.

Thanks for sharing your experiences.