Got back from HK via HEL on time. Landed 30 mins early at HEL. All you have to do is go through security and you're straight back in the region of gates 32-40 the non-Schenegen ones.
One downside, at Hong Kong duty free they will not sell alcohol in sealed bags so you can't buy it due to the liquid regulations at security at HEL. However you can use their duty free tho more expensive than HK. I smoke and a 220 carton Marlboro in HK worked out at £12.
