Chinese Passport Holder Transit in South Korea

A Chinese passport holder with a US visa has a flight scheduled from Beijing to Los Angeles in mid-November.

This person wants to go to South Korea for a 3 day conference; the conference is one week prior to the PEK-LAX flight.

If this person buys a round-trip ticket from China to Korea, will the transit visa be sufficient? Or will they need a regular visa?

Extra info:

What if the original ticket were modified to make it ICN-PEK-LAX?

Some Transit Information Here. It says "Holding a confirmed onward flight ticket for departure within 30 days." Would a return ticket to China than a flight to LAX a week later be sufficiently "onward"?

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Can I transit through South Korea?

Transit passengers. Passengers originating from the United States who transit through Korean airports (who do not pass through immigration) do not require a negative PCR COVID-19 test and have no quarantine requirement for stays less than 24 hours.

Can Chinese citizens enter Korea?

For Non-U.S. citizen(e.g. China, Mongol, Vietnam, Philippine, India, Cambodia, Laos, Bangladesh, Pakistan, Armenia, etc), Tourists in transit to another countries via Korea, can visit Korea without a visa for up to 30 days.

Which countries can enter South Korea without visa?

16 May 2022 Update: The government of South Korea expanded the list of which travelers can travel to South Korea without requiring an entry visa. These new countries include Brunei, Kuwait, New Zealand, Panama, Peru and Saudi Arabia.

Do you need a travel visa for South Korea?

For US citizens you must have a valid passport to enter the Republic of Korea. Although obtaining a visa in advance can ease the entry process, as long as you have a valid U.S. passport, you can enter the Republic of Korea without a visa for a stay of up to 90 days if you are a tourist or on business.

30 Things to Do and Know about Seoul - South Korea Travel Guide

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Images: Aleksandar Pasaric, Markus Winkler, Harry Cunningham @harry.digital, Aleksandar Pasaric