They suffered broken spines and ribs after incident near Mutnovsky volcano.
Helicopter hard landing in Kamchatka. Picture: REN TV
The Mi-8 helicopter was carrying taking to the volcano, in a popular tourist zone, said local reports.
Sergey Khabarov, the deputy head of the regional government, said: 'The helicopter was carrying skiers to Mutnovsky volcano.
'They planned to do heli-skiing.
It is a very popular service in Kamchatka, especially in spring time.
The three were taken by another helicopter. Pictures, video: REN TV
'Many foreigners come to ski from volcanoes and hills here.'
The foreigners were named as US citizen Anthony Michael Trabert, born in 1957, and French citizen Alexander Pierre Michel Pausnee, born in 1973.
The injured Russian citizen is Roman Heikinen, born in 1975.
The three were taken by another helicopter to receive hospital treatment.
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