Jeju Air Opens a Flash Sale on Japan–Korea Routes
Jeju Air is running a limited-time promotion on routes linking Japan and South Korea from September 16 to September 22, 2026. The sale covers services to and from Seoul (Incheon) as well as Busan, with one-way all-in fares starting at 14,550 yen under the BASIC fare type, which does not include checked baggage.
A key point worth noting is that the advertised prices already include fuel surcharges, airport fees and other taxes. There is none of the usual low-cost carrier surprise where the total balloons once you reach the payment page, so you can compare these numbers against other airlines at close to the real out-of-pocket cost.
Sale Period and Travel Period
- Booking period: September 16 to September 22, 2026
- Travel period: January 1 to January 31, 2027
- Fare type: BASIC, checked baggage not included
- Routes: Japan–Korea services to and from Seoul (Incheon) and Busan
Because travel is restricted to the single month of January 2027, the sale suits trips planned for the quiet stretch right after the New Year holidays. Conversely, it cannot be used for itineraries from February onward or for peak year-end dates, so lock in your leave dates before booking.
Lowest Fares to and from Seoul (Incheon)
One-way all-in minimum fares, listed from cheapest to most expensive.
- Shizuoka: 14,550 yen
- Matsuyama: 14,730 yen
- Kagoshima: 14,930 yen
- Hiroshima: 15,600 yen
- Fukuoka: 16,030 yen
- Nagoya/Chubu: 16,180 yen
- Osaka/Kansai: 16,270 yen
- Oita: 16,430 yen
- Okinawa/Naha: 17,230 yen
- Tokyo/Narita: 17,270 yen
- Kobe: 17,540 yen
- Hakodate: 17,700 yen
The cheapest option is Shizuoka at 14,550 yen, followed by regional airports such as Matsuyama, Kagoshima, Hiroshima and Oita. That regional depth is one of Jeju Air’s real strengths: you do not need to live in greater Tokyo or Osaka to fly directly to Korea from a nearby airport. Narita and Kansai face more competition, which is reflected in their slightly higher entry fares.
Lowest Fares to and from Busan
- Fukuoka: 16,030 yen
- Osaka/Kansai: 16,270 yen
- Tokyo/Narita: 17,270 yen
Three routes are included on the Busan side. Fukuoka to Busan is a very short hop, making it ideal for a weekend trip built around seafood and hot springs. Airport-to-city access in Busan is also easier than in Seoul, so even a two-night stay leaves plenty of time to explore.
Things to Watch with the BASIC Fare
Checked baggage costs extra
The BASIC fare covered by this sale does not include checked baggage. If you can travel with carry-on only, you keep the headline price; if you need to check a suitcase, expect an additional baggage charge. Buying an allowance online in advance is generally cheaper than paying at the airport counter, so factor it in at the time of booking.
Change and refund conditions
Promotional fares typically carry stricter change and refund rules than standard fares, with high fees or no refund at all in some cases. If your dates are still fluid, read the fare conditions carefully before you pay.
Limited seat availability
The fares listed above apply to a limited number of seats on selected flights and dates, not to every departure across the travel period. Popular weekends and dates around public holidays tend to sell out early, so prepare several alternative dates and search broadly.
Pre-Booking Checklist
- For round trips, add the two one-way fares together to see the real total
- Compare against other airlines only after adding baggage, seat selection and meal fees
- For early-morning or late-night flights, check airport transport and whether an extra hotel night is needed
- Confirm passport validity and the latest Korean entry requirements such as K-ETA
Summary
Jeju Air’s flash sale is tightly limited to bookings by September 22 and travel in January 2027, but its lineup of low fares from regional Japanese airports, headlined by Shizuoka at 14,550 yen, is genuinely appealing. All-in pricing makes comparison easy, and travellers who can pack light stand to benefit the most. Full details and booking are available on Jeju Air’s official sale page: https://www.jejuair.net/ja/main/base/index.do.