I'm trying to do this with outbound on 22nd or 23rd July, and inbound from SIN on 8th or 9th August.
If selecting a straight SIN - HEL inbound, I'm not getting any Singapore flights - only Lufthansa, and the price is about 3300 Euros pp
If I do SIN - FRA and FRA HEL, then I do see Singapore flights but the price is something like 6.5k Euros pp!
Am I doing it wrong?