Nine people died and 38 were injured when the bus owned by Vancouver's Mi Joo Tour & Travel crashed through a guardrail along Interstate 84 and plunged down an embankment.
The Oregon State Police say 63-year-old Chun Ho Bahn of Bothell, Wash., and 61-year-old Ae Ja Kim of Gangwon province, South Korea, were among the nine killed.
Police have already released the identifies of five other victims, including Youmin Kim an 11-year-old Korean girl who was staying with a family in B.C.
They say while the medical examiner has now identified all of those killed in the crash, the last two names won't be released until their families have been notified.
Several survivors returned to B.C. Wednesday evening thanks to the efforts of an auto dealership in La Grande, Ore., and several volunteers who drove them back after they refused to take another bus.