Cheap flights from South Korea to Japan from £106

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 20/10. Fares are subject to change and may not be available on all flights or dates of travel.
ICN — FUK
16 Oct — 23 Oct1
1 adult
1 adult, Economy

Cheap flight deals from South Korea to Japan

Keep the following information in mind while searching for South Korea to Japan flight deals. Data was last updated 16 September 2025.

Round-trip from

£155

One-way from

£106

Popular in

January

Cheapest in

July

Average price

£139

Good round-trip deal

£76 or less

Good one-way deal

£44 or less
Jeju Air
  • Jeju Air
  • 15/10-22/10
  • 2 total stops
  • 25h 05m total
  • South Korea to Japan
20/10
  • 20/10
  • 2 total stops
  • 27h 45m total
  • South Korea to Japan
Highest demand for flights based on searches. 14% potential increase in price (£19 potential increase over avg. return price).
Cheapest flight prices on average. 2% potential price decrease (£3 potential savings vs. average return price).
Average for round-trip flights in September 2025
Price to beat on a round-trip flight from South Korea to Japan.
Price to beat on a one-way flight from South Korea to Japan.

Find flight deals from South Korea to Japan

Cheapest flights from South Korea to Japan
Explore the most affordable flight options available from South Korea to Japan. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 16 September 2025.

Wed 17/919:40GMP - CTS
1 stop17h 50mJeju Air
Wed 24/914:30CTS - GMP
1 stop17h 50mJeju Air
Deal found 15/9£127
Wed 17/919:40GMP - CTS
1 stop17h 50mJeju Air
Fri 19/914:30CTS - GMP
1 stop17h 50mJeju Air
Deal found 15/9£142
Wed 15/1006:15GMP - CTS
1 stop7h 15mJeju Air
Wed 22/1014:30CTS - GMP
1 stop17h 50mJeju Air
Deal found 16/9£155
Tue 14/1019:40GMP - CTS
1 stop17h 50mJeju Air
Sun 19/1014:30CTS - GMP
1 stop17h 50mJeju Air
Deal found 15/9£157
Sun 12/1019:40GMP - CTS
1 stop17h 50mJeju Air
Wed 15/1014:30CTS - GMP
1 stop17h 50mJeju Air
Deal found 14/9£173
Wed 17/919:40GMP - CTS
1 stop17h 50mJeju Air
Mon 22/914:30CTS - GMP
1 stop17h 50mJeju Air
Deal found 16/9£190
Sun 12/1019:40GMP - CTS
1 stop17h 50mJeju Air
Sun 19/1014:30CTS - GMP
1 stop17h 50mJeju Air
Deal found 14/9£199
Tue 30/919:40GMP - CTS
1 stop17h 50mJeju Air
Wed 22/1014:30CTS - GMP
1 stop17h 50mJeju Air
Deal found 15/9£210
Wed 8/1019:40GMP - CTS
1 stop17h 50mJeju Air
Mon 13/1014:30CTS - GMP
1 stop17h 50mJeju Air
Deal found 14/9£213
Sat 20/919:40GMP - CTS
1 stop17h 50mJeju Air
Mon 22/914:30CTS - GMP
1 stop17h 50mJeju Air
Deal found 13/9£214
Fri 10/1019:55GMP - HND
Nonstop2h 20mANA
Thu 16/1020:05HND - GMP
Nonstop2h 15mANA
Deal found 15/9£223
Tue 28/1011:10GMP - HND
1 stop11h 10mMultiple Airlines
Tue 4/1108:10HND - GMP
1 stop8h 15mMultiple Airlines
Deal found 13/9£224

Cheapflights Fare Finder

 
Customise your flight search to find flights from South Korea to Japan that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 16 September 2025.
Use the filters below to find and compare flights from South Korea to Japan that are best for you.

Fly from

South Korea

Fly to

Japan

Route

Depart

Return

Price

SeoulSapporo

GMP - CTS

GMPCTS

Seoul Gimpo Intl

Wed 15/10

06:15-13:30

1 stop7h 15m

Sapporo Chitose

Wed 22/10

14:30-08:20

1 stop17h 50m

£155

SeoulSapporo

GMP - CTS

GMPCTS

Seoul Gimpo Intl

Sun 12/10

19:40-13:30

1 stop17h 50m

Sapporo Chitose

Wed 15/10

14:30-08:20

1 stop17h 50m

£173

SeoulSapporo

GMP - CTS

GMPCTS

Seoul Gimpo Intl

Sun 12/10

19:40-13:30

1 stop17h 50m

Sapporo Chitose

Sun 19/10

14:30-08:20

1 stop17h 50m

£199

SeoulSapporo

GMP - CTS

GMPCTS

Seoul Gimpo Intl

Tue 30/9

19:40-13:30

1 stop17h 50m

Sapporo Chitose

Wed 22/10

14:30-08:20

1 stop17h 50m

£210

SeoulSapporo

GMP - CTS

GMPCTS

Seoul Gimpo Intl

Wed 8/10

19:40-13:30

1 stop17h 50m

Sapporo Chitose

Mon 13/10

14:30-08:20

1 stop17h 50m

£213

SeoulTokyo

GMP - HND

GMPHND

Seoul Gimpo Intl

Tue 14/10

07:55-10:00

Nonstop2h 05m

Tokyo Haneda

Wed 22/10

19:30-21:50

Nonstop2h 20m

£244

SeoulSapporo

GMP - CTS

GMPCTS

Seoul Gimpo Intl

Tue 2/12

19:50-13:30

1 stop17h 40m

Sapporo Chitose

Fri 5/12

14:30-08:25

1 stop17h 55m

£249

SeoulSapporo

GMP - CTS

GMPCTS

Seoul Gimpo Intl

Wed 29/10

08:00-14:50

1 stop6h 50m

Sapporo Chitose

Wed 5/11

12:55-22:05

1 stop9h 10m

£251

SeoulOsaka

GMP - ITM

GMPITM

Seoul Gimpo Intl

Sat 11/10

07:55-12:35

1 stop4h 40m

Osaka Itami

Wed 15/10

17:00-21:50

1 stop4h 50m

£252

SeoulOsaka

GMP - ITM

GMPITM

Seoul Gimpo Intl

Wed 15/10

07:55-14:35

1 stop6h 40m

Osaka Itami

Tue 21/10

17:00-21:50

1 stop4h 50m

£259

Flights are sorted by cheapest return flights first.

Deals found on 15/9

Showing 1-10 of 54 results
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Best time to book a flight from South Korea to Japan

Have a flexible travel schedule? Discover the best time to fly to Japan from South Korea with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from South Korea to Japan

What is the cheapest month to book a flight from South Korea to Japan?

Currently, November is the cheapest month in which you can book a flight from South Korea to Japan (average of £550). Flying from South Korea to Japan in July is currently the most expensive (average of £1,239). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from KR to JP?

Find hourly flight availability from South Korea to Japan. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 16 September 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from South Korea to Japan as you normally would.

Weekly flight availability from South Korea to Japan

Explore weekly flight availability from South Korea to Japan. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 16 September 2025.

The most flights from KR0 to JP0 are scheduled on a Monday (51 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (34 on average).

Reviews of airlines servicing Japan

Get insights into the airlines that provide service to Japan. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Japan. Reviews last updated 16 September 2025.
Read through reviews of airlines operating flights from South Korea to Japan, such as Korean Air, Asiana Airlines, andEthiopian Air. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Crew

8.7

Overall

8.4

Boarding

8.5

Entertainment

8.2

Comfort

8.3

Food

8.1

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!

Crew

8.7

Overall

8.4

Boarding

8.5

Entertainment

8.2

Comfort

8.3

Food

8.1

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!

Crew

8.7

Overall

8.4

Boarding

8.5

Entertainment

8.2

Comfort

8.3

Food

8.1

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!

Crew

8.7

Overall

8.4

Boarding

8.5

Entertainment

8.2

Comfort

8.3

Food

8.1

Reviews

1 / 20
10.0
Excellent

Jacqueline,Aug 2025

ICN - SEA

Well, I was upset at first because I have a special diet and I need to order vegetarian and I couldn’t do it before the trip, but the stewardess were so nice and they gave me sandwiches that were plant-based which I loved!!

Related info for your journey

Find useful and relevant information for your journey from South Korea to Japan. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • How popular is this South Korea to Japan flight route?

  • How long is the flight from South Korea to Japan?

    Jeju Air and Japan Airlines can get you from South Korea to Japan in just under 2h 05m. Your travel time can differ by up to 5h 10m. The distance between South Korea and Japan is about 733 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the cheapest airlines to fly from South Korea to Japan one-way?

    The cheapet airlines for a one-way flight from South Korea to Japan are Jeju Air (£116), Japan Airlines (£119), and ANA (£150).

  • Can I find deals for flights from South Korea to Japan that include hotel bookings?

    Yes. In addition to deals on South Korea to Japan flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from South Korea to Japan?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from South Korea to Japan.

  • Can I find deals for business class flights from South Korea to Japan?

    Yes. Cheapflights offers flight deals from South Korea to Japan by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from South Korea to Japan?

    Currently, November is the cheapest month in which you can book a flight from South Korea to Japan (average of £550). Flying from South Korea to Japan in July is currently the most expensive (average of £1,239). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for South Korea to Japan

See prices for flight routes from nearby airports that may be better suited for you.

Top 3 airlines flying from South Korea to Japan

Discover the top 3 airlines that operate flights from South Korea to Japan. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 16 September 2025.
AirlineCheapestAverageFlexibilityOn-time
Jeju AirCheapest£105Average£163FlexibilityNo cancel feeOn-timeN/A
Search Jeju Air flights
Eastar JetCheapest£105Average£188FlexibilityNo cancel feeOn-time86%
Search Eastar Jet flights
ANACheapest£208Average£208FlexibilityNo cancel feeOn-time80%
Search ANA flights

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