Since I think in the coming weeks/months there could be more than few people going to Hawaii from Hungary, why not start a dedicated thread?
My trip starts in 2 weeks, more or less standard TP optimized route BUD-LHR-JFK-LAX-HNL/HNL-LAX-JFK-MAD-BUD. AA ticket, 90% AA flights (I didn't want to change from T7 to T8 on the outbound).
At the time of booking there was no good availability to transit in HEL without the price skyrocketing, and also the flight times where far from (my) ideal... but you can always count on AA rescheduling and cancelling something when you book with enough advance.

So, even if I didn't get to add HEL, I was able to get the overnight layovers where I wanted, like in LAX instead of JFK.
The only downside, caused by BA first cancelling BUD flights and then switching MAD & BUD flights between T5 and T3, it's a +6h layover in LHR on the return. Also, I wanted to try a B2B coming back, but since I ended on the last service of the day to BUD, I'll have to spend the night there. I guess sometimes one can't get everything
