First: documents and reservations
Check passport validity and destination entry requirements. Even when departing from Korea, required documents vary by passport nationality, travel purpose, and transit route. Check destination government or embassy guidance together with airline notices, and save flight and accommodation reservations for offline access.
One week before: connectivity and payment
Check your phone’s eSIM support and lock status, then compare roaming, eSIMs, and SIMs. Check overseas card availability, fees, and how to report loss. Keep cards and cash in more than one place.
When packing: reduce items to suit your itinerary
Check accommodation laundry and amenities to reduce luggage. Choose clothes you can combine and rewear rather than adding a full set for every day. Keep your passport and valuables separate and accessible during travel.
The day before: check changed information
Recheck local forecasts, flight operations, and travel time to the airport. Check luggage against the allowance included in your ticket. The checklist is a preparation reference; official guidance governs current entry and transport conditions.