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