Originally Posted by
dvs7310
RTWs seem to be an exception to this. I've put plenty of random codeshares on my tickets that aren't related to my inbound flights and / or a connection with the codeshare carrier I'm using. I quite intentionally try to set them up to have as near zero AA, BA, and IB codes as possible, so do a lot of work looking for more advantageous codeshares to replace those where needed.
it is weird to see stand alone flights are codeshared. I saw mad-Cai on Iberia one segment only but can book it with aa code....
When you book it with partner code, is there any difference in taxes? For example I see ba flights have higher taxes than jl on hnd-lhr route but if I book jl flight with ba code, do I pay jl taxes or ba taxes? I assumed it is ba tax because the flight is booked as a ba flight instead of jl...the reason I am asking this is because ba flights earn substantially more Alaska miles than jl