Oneworld members Finnair and Siberian carrier S7 have agreed to new codeshare agreements.
From April 26, Finnair code will be added to S7’s new service between Helsinki and Moscow’s Domodedovo International Airport, as well as to selected onward S7 services from Domodedovo to Novosibirsk, Kazan, Rostov-on-Don, Samara, Ufa and Yekaterinburg.
In return, S7 will add its flight code to selected Finnair services from St. Petersburg and Yekaturinburg to Helsinki, and to selected onward Finnair services to the Finnish cities of Joensuu, Kuopio, Oulu, Rovaniemi, Tampere, Turku and Vaasa.
Hannu Sundberg, Finnair's vice-president of commercial partnerships, said: "We are looking forward to welcoming S7 Airlines to Helsinki with their new service from Domodedovo.
"The arrival of another modern, high-quality alliance partner in Helsinki also reinforces a vital oneworld hub between east and west."
Vadim Besperstov, S7 Airline's director of strategy department, added: "On April 26, S7 Airlines starts its own flights to Helsinki from Moscow's Domodedovo airport. As a result of this agreement, passengers of S7 Airlines and Finnair will be able to travel inside both countries to more destinations."
Last week Finnair announced plans to add three flights a week on its Bangkok service from December.
The carrier currently flies double-daily to the Thai capital. Between December 30 and March 27, 2015 it will operate 17 weekly services.