What are the booking policies for Korea train tickets? * Tickets can be booked via the Klook website or mobile app. \n * Tickets can be searched and booked up to 2 months before the travel date (available only on Klook) \n * Tickets cannot be purchased for trains departing in 20 minutes or less \n * Payment must be completed within 10 minutes after booking. \n * Tickets purchased on Klook can only be refunded through Klook.