Originally Posted by
QRC3288
Just call them.
It's certainly possible "in general" if the cities in question are lumped together in one zone, like TPE/RMQ are. I'm not sure if that's the case for PEK and CTU.
But those ex-China I fares are known as the cheapest business class fares in the network, so I'm not sure. Maybe there are some restrictions on the ticket conditions preventing a change. Let us know what they say.
I agree. The best is to call them. I bought these fares before. I changed return dates a few times, but never the cities. Ex-PEK, PVG, CTU, CAN, TAO all have different I fares and the different is quite huge.