T’way Air is holding its September t-Discount sale through September 30.
The offer applies to flights between Japan and South Korea’s Seoul, Cheongju, Daegu, Busan, and Jeju, with fares discounted up to 20% (up to 15% for Tokyo/Narita departures/arrivals). As a one-way example, the Tokyo/Narita–Seoul/Incheon route starts from 9,860 yen. Fuel surcharges and taxes are additional. The discount code is “KOREASEP”.
Additionally, a coupon offering up to 3,500 yen off can be combined. The travel period is from September 1 through March 28, 2026. Some dates are excluded.
