Originally Posted by Sam Drucker

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Like I said, very convoluted, and it's a minefield to try to navigate to get the fares you want....... I guess we're getting "the best of both" from the CO/UA merger . It should get better in a year or so when UA and CO are operating under a single certificate as one airline.

Originally Posted by Sam Drucker

The downside: In my case, I wanted a three leg multi-city trip. V fares were the lowest on one leg, K fares on the next, then S fares on the last leg. I had to buy each leg separately as I couldn't get the correct combinations by putting "V,K,S" in the search engine. Luckily, it didn't seem to affect price by buying three one ways (rather than one multi-city trip.) Probably should be easier and you can settle on one fare type if you're just trying to book a round trip.

Originally Posted by Sam Drucker

It may get better: There's talk of some improvements to this whole situation by Star Alliance or ROP maybe later this year. As JieJie said, check the ROP chart out each time you need to think about booking on a Star Alliance partner and want to get credit. The chart may change at any time.

ROP Star Alliance Booking Class Codes Chart

Originally Posted by Sam Drucker

I'd be very surprised if there were any streamlining. This is simply an area, no different from award rules, where each airline chooses what to do/accept.

A final note: This is so convoluted in it's present form, also consider the fact you may get credit for something it says does not yield credit, simply because it is difficult to administer (and code by the programmers.) I got mileage credit a year or two ago from fares they claimed were non-earning. The impression I got at the time was that THAI simply accepts whatever the partner carrier sends them (in terms of mileage credit.)