Guide to Korean domestic flights and Jeju movement for foreigners 2026: Gimpo Airport, baggage, check-in

When traveling quickly to cities like Jeju Island, Busan, Yeosu, or Ulsan, Korean domestic flights are one of the most convenient options. In particular, many travelers use Gimpo Airport in Seoul, and many travelers visit the Jeju route as there are many flights. It is easy for foreigners to make mistakes in ID verification, name writing, and baggage regulations, so it is a good idea to know the basic procedures before departure.

The name on your ticket must match your ID.

Even for domestic flights, identification is required when boarding. Problems may arise if the English name on your passport or alien registration card is different from the name on your airline ticket, so please enter the spelling correctly when making a reservation. It is recommended that you check the order of your middle name, spacing, last name, and first name, and if there are any errors, contact the airline as soon as possible.

Don't confuse Gimpo Airport with Incheon Airport.

Domestic flights departing from Seoul often use Gimpo Airport, but this may vary depending on the flight. Be sure to check the airport name, terminal, and departure time. Travel times for subways, airport railroads, buses, and taxis are different, so it is safe to leave with plenty of time to spare during rush hour.

Check baggage regulations in advance

For domestic flights, free checked baggage standards may vary depending on the airline and fare plan. There are also regulations regarding liquids, spare batteries, electronic devices, and sports equipment carried on board. If you plan to bring liquid gifts or food on your Jeju trip, check in advance whether they can be packaged and brought in.

Consider self-check-in and security screening times.

Self-check-in and automatic baggage drop are available at many airports, but you may be directed to a counter because you will need to verify your foreign national ID. Security screening lines can be long during weekends, holidays, and vacation seasons, so it is best not to arrive too late, even for domestic flights.

Be prepared for delays and weather variables

Jeju routes may experience delays or cancellations due to weather. If you have important plans, leave some time rather than making reservations right after you arrive. Check your airline app or text notifications and quickly compare alternative flights, refunds, and accommodation rescheduling possibilities in the event of a cancellation.

Pre-visit checklist

• identity card
• ticket name
• airport location
• baggage standards
• auxiliary battery
• delayed notification

Detailed conditions and operating hours may vary depending on region, store, institution, and season. For important schedules or costly choices, it is best to check the official website, consultation center, and on-site information before departure.