Finnair hopes to pick up more passengers flying between Europe and Asia through a codeshare with Malaysia Airlines.
The agreement covers flights beyond the two airline’s hubs at Helsinki and Kuala Lumpur.
Selected MAS services between Kuala Lumpur and Singapore, Bangkok and Hong Kong will carry the Finnair flight code.
The MAS flight code will be used on some Finnair services between Helsinki and London, Paris, Frankfurt and Amsterdam.
The move comes ahead of MAS joining the Oneworld alliance on February 1 next year. Finnair is already a member of the global airline group.
MAS government and international affairs senior vice president Germal Singh said: “The arrangement with Finnair is part of our strategy to develop commercial co-operation with Oneworld alliance members as we prepare towards becoming a full member of the alliance next year.
“This is also our initiative towards enhancing air connectivity with key priority markets overseas for increased tourist arrivals into Malaysia.
“Through this partnership we can expand our reach in Europe without operating our own flights between Malaysia and the Scandinavian region.”
Finnair flies four times a day from Heathrow and twice a day from Manchester to its Helsinki hub, offering onward connections to Asia.