Finnair will fly between Helsinki and San Francisco next summer. 

Finnair will offer the flights from June 1 to Sept. 30 on Tuesdays, Thursdays and Saturdays.

San Francisco will be the carrier's fourth U.S. destination, joining New York, Chicago and Miami.

Finnair will operate the flights as part of its joint venture with American, British Airways and Iberia, the carrier said.

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