Originally Posted by
Dark Blue
…I thought the "J" means business class, but it sounds like more economy plus.
The difference was only £4,000, so I took the deal, which yields 80 TPs at less than £2/TP. But as wrote above, it could be just economy plus, BA TP calculator shows three classes (first, business and economy), I don't know where the "Class J" falls. I played around with dates, but did not see the domestic first anyway.
Class J is JAL’s
domestic business class and Avios and tier points accrue on that basis. The BA calculator is correct. There is full description of service offered on the JAL website.
https://www.jal.co.jp/jp/en/dom/service/j/
Domestic First is only offered on widebody aircraft on a smaller number of routes.