Originally Posted by
xliioper
What is the route you are checking?? Here is an example of ATL-HKT roundtrip DL PS fares. As you can see, the fare basis codes all start with coach classes (hence dual inventory). One-way PS fares on ATL-HKT are considerably more than roundtrip fares. Upfaring just to get a Y/B/M basis PS fare is likely going to be a considerable amount extra and not worth it just to upgrade ICN-Asia KE segment with a GUC.
If you are talking about TATL PS fares, those are not dual inventory fares and the fare basis codes will start with P/A/G for PS fares.
I was checking TPA-BKK - nothing came up for Y/B/M. I changed the query to MCO-BKK and a bunch of Y/B/M underlying showed up. Must be the route. Thanks again great info, and it does indeed look like it would be less expensive to change the work ticket to ICN only and buy Prestige out of pocket from ICN to BKK R/T on a separate ticket.