Originally Posted by
CPH-Flyer
Correct PY at the airport is your only option. JMB members can upgrade for points if booked in K and above, but otherwise JAL does not have any offers for upgrade mechanisms.
On the domestic flight there is potentially also an option to upgrade to Class J (domestic PY) space available and if JL3002 is operated with a Class J config
Thanks for your information. Well, in that case I just have to wait until the day of departure, to see if I want PY (running Osaka marathon and flying back two days after that) and if it's available ;-)
Upgrading to J class is really cheap, isn't it? Like 1000Yen?