Domestic flights in Korea
For routes like Seoul↔Jeju, domestic flights are the fastest option. Here are the essentials—booking, airport flow, and ICN→GMP transfer tips.
- Bring a physical ID: passport is the safest (ARC may be accepted for residents—airline/airport rules come first)
- Deadlines can be strict: check-in/bag drop and gate cut-off vary by airline (confirm in your booking/airport guidance)
- Power banks: carry-on only, never in checked baggage (details vary by airline)
- Check the airport code: ICN (Incheon) vs GMP (Gimpo)—easy to mix up for ‘Seoul departures’
30-second pre-check
- Confirm the airport code—Seoul departures can be confusing (GMP vs ICN)
- Check baggage inclusion (especially LCCs) + change/refund rules
- Name: enter exactly as on your passport (surname/given name, spacing/order)
Must-have (for non-Koreans)
- Passport (original): the safest option
- Residents: ARC may be accepted, but airline/airport policy comes first—carrying your passport is safest
- Physical ID is usually required (photos/copies may be rejected)
Cut-off times (important)
- Check-in/bag drop cut-off varies by airline (often around 30 minutes before departure—confirm in your booking/airport guidance)
- Gate cut-off can be strict close to departure (go to the gate early)
- Recommended arrival: 1 hour early minimum (1.5–2 hours for weekends/peak season/bad weather/checked bags)
Airport flow
- Check-in (app/web, kiosk, or counter) → drop checked baggage if needed
- ID check → security screening → go to the gate
- Scan your boarding pass and board (watch the screens/announcements)
Security / liquids / power banks
- Airport guidance: domestic flights often have no 100ml liquid limit, but international flights still use the 100ml rule
- Power banks: carry-on only, never in checked baggage (capacity/quantity/storage rules vary by airline)
- Follow airport/airline rules for prohibited items (knives, sprays, etc.)
ICN → GMP transfer tips
- If you arrive at ICN on an international flight but your domestic leg departs from GMP, you may need an airport transfer
- Common options include AREX, limousine buses, and taxis—ICN’s FAQ lists typical routes
- Traffic varies—leave a generous buffer and prioritize airline cut-off times
Official links
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