Upvote:0
According to IATA Timatic, used by airlines and travel agents to verify passengers travel document requirements, you would require a visa to enter the Republic of South Korea.
A search in TravelDoc expresses it thus:
Refugee Travel Document issued by United States of America to a national of Cambodia is not listed as an accepted document by Republic of Korea (South).
Upvote:1
South Korea's policy on immigration is nationality based. Since you're Cambodian, you need a visa. The only way for you to visit Korea without a visa would be to travel in a triangle, taking advantage of the 30-day visa exemption for people who:
But you would have to fly something like:
US - Korea, Korea - third country, and then third country - US.
You couldn't fly on a return ticket US-Korea without a visa.