If you were born in South Korea and hold a valid Korean passport, leaving the country is straightforward for most people. The complications fall on three groups: men who haven’t completed mandatory military service, dual nationals who missed key nationality deadlines, and anyone the government has placed under an exit ban. Any of these can delay departure, and some can block it for years.
The Baseline: A Valid Passport
A valid South Korean passport is the starting point. Adult passports are issued for ten years; passports for children under 18 are valid for five years, and children under eight receive a five-year passport. Applications go through local district (“gu”) offices, regional passport centers, or Korean consulates abroad. As of March 2026, a standard 58-page adult passport costs 52,000 won (about $38), following the first fee increase in two decades.
Being able to leave Korea and being able to enter your destination are separate questions. Many countries require a visa or electronic travel authorization from Korean visitors, so confirm your destination’s entry rules before you book.
Military Service: The Main Obstacle for Men
Mandatory military service is the single biggest factor that can prevent a Korean-born man from leaving. All able-bodied male citizens must serve. Service length depends on branch: 18 months for the Army and Marines, 20 months for the Navy, and 21 months for the Air Force. The obligation begins at 18, and men usually undergo a physical examination around age 19 to determine their fitness classification.
When You Need an Overseas Travel Permit
Men subject to conscription cannot simply book a flight. Those aged 25 and older who are classified as subject to conscription must obtain an overseas travel permit from the Military Manpower Administration before leaving the country. Men who left Korea before turning 24 face a different deadline: they must apply for an extension permit by January 15 of the year they turn 25. If a permitted traveler needs more time abroad, an extension application must be filed at least 15 days before the current permit expires.
The permit’s duration depends on the purpose of travel. Study abroad, employment, and family reasons each carry their own allowable periods. The Military Manpower Administration tracks compliance closely.
Penalties for Unauthorized Departure
The consequences are serious. Under Article 94 of the Military Service Act, anyone who departs without permission, stays abroad without authorization, or fails to return within the permitted period faces one to five years in prison if the violation is connected to evading service. Even without evasion intent, unauthorized travel can lead to criminal prosecution.
The Age-38 Release
The obligation does not last forever. Men who obtained permanent residency abroad (with more than three consecutive years of residence there) or dual citizens who have lived outside Korea for more than ten consecutive years can postpone conscription through an emigration-purpose travel permit until age 37. Starting January 1 of the year they turn 38, they are reclassified into wartime labor service, which effectively ends the peacetime obligation and removes the travel permit requirement.
Dual Nationals and the March 31 Deadline
South Korea’s dual nationality rules create a specific trap for men. A male dual national must formally renounce his Korean citizenship at a Korean embassy or consulate by March 31 of the year he turns 18. To qualify, at least one parent must be a citizen or permanent resident of the child’s birth country, or must have lived there continuously with the child for at least 17 years.
Missing the deadline has cascading effects. A male dual citizen who does not renounce by March 31 keeps his Korean nationality and becomes subject to conscription. He then cannot renounce Korean citizenship until he completes military service or reaches age 38. In the meantime, he needs the same overseas travel permits as any other conscription-age man. After completing service, he has a two-year window to either renounce Korean citizenship or file to remain a dual citizen permanently.
Women and girls with dual nationality face lower stakes since they are not subject to conscription, but they still must choose one nationality before age 22 under the Nationality Act.
Exit Bans Under the Immigration Act
Separate from military service, the government can block any citizen from leaving through a formal exit ban. Under Article 4 of the Immigration Act, the Minister of Justice may prohibit departure for up to six months for individuals who are on criminal trial, serving a prison or detention sentence, under active criminal investigation, or carrying unpaid obligations such as taxes, child support, fines, or government surcharges.
These bans are common and approved almost automatically. Over the past five years, the approval rate has averaged above 97%, with annual cases rising from roughly 29,000 to over 41,000. If police or prosecutors request a ban for someone under investigation, the Justice Ministry nearly always grants it. Bans are temporary and tied to the underlying legal or financial issue, but resolution can be slow, and individuals are not always notified immediately.
If you have significant unpaid tax debt, unresolved court judgments, or pending criminal matters, check your status before booking travel.
If You Were Born There but No Longer Hold Korean Citizenship
Many people born in South Korea no longer hold Korean citizenship: international adoptees, those who naturalized elsewhere, and those who formally renounced. They can visit Korea, but they enter as foreign nationals under the standard rules for their passport country.
The F-4 Overseas Korean Visa
Former Korean citizens and their descendants can apply for an F-4 (Overseas Korean) visa. Holders can stay up to two years per entry, work in most occupations without employer sponsorship (excluding unskilled manual labor), and re-enter on a multiple-entry basis for up to five years.
There is an important restriction for men. Male former citizens aged 18 to 40 who did not renounce Korean citizenship before turning 18 cannot obtain the F-4 visa unless they have completed military service or received a formal exemption. Men who renounced or naturalized abroad after May 2018 without completing service generally cannot obtain the F-4 visa until the year they turn 41.
Reinstating Korean Nationality
South Korea also allows former nationals, including Korean-born adoptees who automatically lost their nationality on becoming citizens of another country, to apply for reinstatement. The process involves reporting the loss of Korean nationality, then filing a reinstatement application through a Korean embassy, consulate, or immigration office in Korea. Processing takes roughly a year, and the fee is $188.
Reinstated citizens who want to keep their other passport must file a declaration promising not to exercise their foreign nationality while in Korea within one year of approval. They must use their Korean passport when entering and leaving Korea, though they can use either passport for travel to third countries.
Traveling With Children
Korean minors traveling internationally need a valid passport. When a child travels without both parents present, airlines and immigration authorities may require a notarized letter of consent from the absent parent or parents. Documentation requirements vary by airline and destination, so confirm with your carrier and the destination country’s embassy before travel. For boys, the military service clock starts at 18, so families of teenage sons approaching that age should watch for conscription-related permit requirements that may affect future travel.