Mirnyj, Novosibirsk Tolmachevo, and Moscow Vnukovo are the top three AeroUnion airports based on our airline data. This may change if AeroUnion makes updates to their flight routes due to supply and demand.
AeroUnion does not have flights from Singapore Changi at the moment. There are scheduled flights with AeroUnion out of Irkutsk though (if you don’t mind flying from this airport). Flying with S7 Airlines is recommended if you still want to fly from Singapore Changi.