I am a refugee from Cambodia with a Green Card in the US. I will get a refugee travel document, which is like a passport. Can I travel to South Korea? Will I need a visa? If so, how do I get it? Basically will Korea let me in with a travel document?
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:
- transit through Korea, and
- have a visa from a few countries, including the US. Since you have a green card, that'd work.
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.
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).