Originally Posted by mkjr

don't you just call up BAEC and book flights that JAL Transocean Operates? I was fairly sure that avios could be used on the three regional jal carriers.

Originally Posted by Guava

Japan Transoceanic Air (NU) is a Oneworld affiliate member through JL's membership. It is listed here: https://www.oneworld.com/member-airl...n-airlines-jal

NU flights can be displayed on Oneworld schedule under its own code NU, which means you can book it with Avios, just like Dragonair is a OW affiliate of Cathay under its own code KA. Not all subsidiaries of OW carriers are affiliates of Oneworld. Vueling, a popular low cost carrier in Europe, which is owned by IB is a notable and often misunderstood exception for example. Many people took for granted that Vueling is a Oneworld affiliate when it is in fact not, even if you book it under IB code. And if you look under IB's profile, the only affiliates that are OW are Air Nostrum and Iberia Express.

If you can't book it on BA.com, then you must call, in which case, BAEC agents would be happy to waive the phone booking fee for you, so no, you don't have to go to ANA to get to Ishigaki and yes, you can use Avios or any other OW miles without costing an arm or a leg.