Originally Posted by ernestnywang

I calculated the previous quote specifying the validating carrier to be AA, since you were talking about AA. Validating it on QR would theoretically bring the YQ/YR lower than validating it on AA, as QR only seems (to my knowledge so far) charges YQ/YR on QR, BA, and MH but not other carriers. However, anecdotal reports that I heard from another FTer suggests QR (which uses Amadeus)'s quote does not conform to my Sabre quotes, as QR calculates an RTW part by part and, as a result, collect other carriers' YQ/YR. A Sabre travel agent might be able to issue using this quote by plating the ticket on QR (doable given QR has the first inter-TC segment), but given the small difference, it is likely not worth it after considering the agency fees.

[[[ fare quotes on several carriers omitted ]]]


I did not try validating carrier BA as the itinerary contains no BA segments. For this specific itinerary, validating it on MH results in the lowest quote. However, since there are no apparent long-haul segment on MH, I am not sure whether it is feasible to have this ticket issued by MH.