Originally Posted by ranskis

Check first if there is availability on the flights on May 1st, for instance all flights from HEL to USA have zero availability on 1st and 2nd of May, and flights to Asia departing on 1st only go to Japan and Korea (since the return leg would arrive on 3rd). Flights to TYO/KIX/ICN on 30apr are zeroed out since the aircraft would land back in HEL on 2nd May. For HKG, SIN, PVG and BKK, zero availability on 1st and 2nd.