Does anyone know what fare bucket(s) an economy oneworld explorer fare booked through qantas would be in?

Does anyone know what fare bucket(s) an economy oneworld explorer fare booked through qantas would be in? I'm trying to work out potential earn vs cost for a rtw vs discount economy return fare adl to JFK and LHR. With qantas' current early bird special, using return tickets vs rtw might be a better option.

I believe it's L-class for economy, but do double-check.

Correct.

Thye are known as LONEx, DONEx, and AONEx  (and some now IONEx's) - first letter is the fare bucket code.

If your entire travel is ADL/SYD-JFK-LHR and return to ADL, you may be better off at the moment by buying a SYD-JFK  QF special, then an add-on JFK-LHR return with BA, AA or a Star Alliance member if you are not chasing points with OW. This will not be a rtw, and will in fact be backtracking. I did the opposite earlier this year, and went SYD-HKG-LHR in PE with CX (don't bother wasting your money on PE with Cathay IMO!), BA from LHR-JFK on separate ticket, and backtracked all the way. It's a matter of personal preference I suppose, but it saved me a LOT of money!

Thanks all for the info, very helpful. Good to know re cathay's premium as I was considering at least one leg in premium cabin. Qantas' double points deal is pretty attractive at the moment.