Siberian carrier Yakutia has signed a memorandum of understanding with Boeing for the supply of 12 new 737s.
The agreement, concluded in Moscow, covers nine -800 and three -700 variants with delivery between 2016 and 2018.
Speaking at the signing ceremony, Yakutia managing director Ivan Prostit said their purchase would be funded within the framework of investment programme backed by the regional government.
He declines to specify whether the carrier intends to replace or expand its sub-fleet of 737s which comprises four -700s and three -800s.
Yakutia operates six Boeing 757-200s, of which one is a freighter. Prostit says it has selected the Boeing narrowbodies for fleet renewal given their proven capability to withstand extremely cold weather conditions.