I'm in the middle of an ex JNB LONE6 (*) issued by AA (mindpearl) and am trying to get it re-routed. I have the new (**) itin held pending pricing but the _increase_ taxes initially quoted seems crazy ($500).

Would love some help getting the taxes down, either because they should be lower or by knowing where the larger items are so I can quash it. E.g. the following seem useful questions:

(a) am I right that an AA issued ticket won't have any YQ for flights on: AA, AA codeshare of LAN metal flights, QF

(b) Does AA charge YQ for JL, CX and/or QR flights?

(c) Is there a decent tool to see the YQ/taxes charges for the various segments based on issuing airline and airline flown (with/without codesharing)?

(d) I put the two routes into the oneworld tool to price but then realised it's probably pricing it as BA would not as AA would. Interestingly though, those two itins do indeed differ by about $500 when priced using the tool. There's a "details" link next to the taxes quoted in the oneworld.com tool but in both firefox and chrome (on my Mac) this doesn't actually do anything. Should it?

(e) Might I be getting into trouble by saying I'm using a UK credit card and this somehow being priced out as changing the origin of the fare? AA seem very keen for me to be dealt with by Europe since i'm using a UK card.

Many thanks in advance for any help!


*: original route: JNB-MRU-LGW-IBZ-MAD-xLHR-DFW-JFK-SFO-ORD-SFO-EZE-xDFW-xNRT-SIN-SYD-JNB -- first two flights on BA, then IB for LGW-MAD-xLHR, then AA till NRT, JL for xNRT-SIN and then QF for SIN-SYD-JNB

*: provisional new route (lhr-jfk wanted for this Weds!): JNB-MRU-LGW,LHR-JFK-xMIA-SJO-xMIA-LIM-IQT-LIM-xMIA-xNRT-SYD-SIN-xDOH-JNB -- first two flights on BA, then AA for till LIM-MIA which is an AA codeshare but LAN flight, then AA to NRT,JL for xNRT-SYD, QF for SYD-SIN and QR for SIN-xDOH-JNB