Starwood has announced a frequent traveler partnership with Air China. Members of Air China’s Companion program can now earn 800 base kilometers for all qualifying stays at Starwood properties. Companion members who are also Starwood Preferred Guest members can transfer Starpoints into an Air China account at a one-to-one ratio. To celebrate the agreement, Starwood is offering double kilometers to Air China Companion members when they stay at Starwood hotels until Oct. 31

More information on the double kilometers promotion is available at http://www.spg.com/airchina