Climate Companion Card Unlimited rides on Seoul's subway and buses Purchased at the end of 2025. Used once, all four cards are in good condition. 1-day pass: 5,000 won 2-day pass: 8,000 won 3-day pass: 10,000 won 5-day pass: 15,000 won 7-day pass: 20,000 won You can charge the card at the station for the number of days you want to use it. Purchasing it in Japan will make your trip to Korea smoother.