Key Takeaways：Jeju Air’s Summer Week sale runs June 17–23, 2026, dropping Japan–Korea one-way fares to as low as 11,400 yen with fuel surcharges and airport fees already included. Book through the official app with code SUMMERWEEK for up to 40% off STANDARD and BIZ LITE fares. Travel is valid through October 23, 2026, so it’s a solid window for summer and early-autumn Korea trips.
Jeju Air Launches the Summer Week Sale
Jeju Air is holding its Summer Week summer travel sale on Japan–Korea routes from June 17 to June 23, 2026. One-way fares start at a total of 11,400 yen, with fuel surcharges and airport usage fees already included. The travel period runs all the way from June 17 to October 23, 2026, making it ideal for summer holidays and early-autumn trips to Korea.
App-Only Coupon SUMMERWEEK for Up to 40% Off
Exclusively through the official Jeju Air app, entering the discount code SUMMERWEEK takes up to 40% off STANDARD and BIZ LITE fares. To book at the best price, using the app is recommended.
Routes Including 15kg Checked Baggage
The following routes include 15kg of checked baggage in the fare.
- Tokyo/Narita, Nagoya/Chubu, Kobe, Hiroshima, Matsuyama, Oita, Okinawa/Naha to Seoul/Incheon
- Tokyo/Narita to Busan
Lowest One-Way Fares to/from Seoul (Incheon)
- Hiroshima: 11,400 yen
- Matsuyama: 11,530 yen
- Shizuoka: 12,050 yen
- Fukuoka: 12,830 yen
- Kobe: 12,940 yen
- Oita: 13,430 yen
- Osaka/Kansai: 13,570 yen
- Nagoya/Chubu: 13,680 yen
- Tokyo/Narita: 14,270 yen
- Sapporo/Chitose: 15,590 yen
- Okinawa/Naha: 19,430 yen
Lowest One-Way Fares to/from Busan
- Fukuoka: 12,830 yen
- Osaka/Kansai: 13,570 yen
- Tokyo/Narita: 14,270 yen
- Sapporo/Chitose: 15,590 yen
Booking Notes
- Sale period: June 17 to June 23, 2026
- Travel period: June 17 to October 23, 2026
- Listed fares are one-way totals, including fuel surcharges and airport usage fees
- The up to 40% off SUMMERWEEK coupon is app-only and applies to STANDARD and BIZ LITE fares
- Seats are limited and the sale ends once allocations are sold out
Check booking details on the Jeju Air sale page: https://www.traicy.com/link/7C