A customer is about to place an order at a Subway outlet in Seoul on March 30, 2025, with the American fast-food restaurant chain set to raise its prices by an average of 3.7 percent in April.

The base fare for a subway ride in the Seoul area with a transportation card is scheduled to increase by 150 won ($0.10) to 1,550 won starting June 28, meaning a round-trip fare will exceed 3,000 ...