Online hotel service Oktogo has raised more than $5 million in funding from Poland-based MCI Management.
This latest round for the Russia-based company comes on top of about $30 million including $11 million raised in March 2013 and $10 million the year before.
Previous investors Mangrove Capital Partners, Ventech, VTB Capital and others also participated in the $5 million.
According to a statement the funds will go towards sales and marketing of Oktogo's online travel services in Russia and the former Soviet Union countries.
Oktogo chief executive Marina Kolesnik says that the online travel market in Russia has seen a shift in the past year from a focus on international to more emphasis on domestic.
She adds that while the outbound market has declined about 30%, the domestic market is growing at a rapid pace and that investors recognise the potential there.
About 18 months ago Oktogo acquired online review service Travel.ru and has since redesigned the site and added Oktogo's hotel product to it.
Travel.ru is considered the B2C brand of the company while Oktogo is used as the corporate brand.
According to the statement the sites attract a total monthly audience of three million users.
MCI Management is a new investor for Oktogo but has already participated in several rounds of investment for Russia-based online travel agency Travelata including $7 million in Series B funding six months ago.