Cheap flights from South Korea to Japan from £125

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 23/12. Fares are subject to change and may not be available on all flights or dates of travel.
ICN — FUK
11 Jan — 18 Jan1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from South Korea to Japan

Enter your travel dates to find the best prices.

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 12 December 2025.

Sat 13/1219:50GMP - CTS
1 stop17h 40mJeju Air
Wed 17/1214:30CTS - GMP
1 stop17h 55mJeju Air
Deal found 12/12£238
Sun 21/1219:50GMP - CTS
1 stop17h 40mJeju Air
Wed 24/1214:30CTS - GMP
1 stop19h 35mJeju Air
Deal found 10/12£256
Thu 18/1219:50GMP - CTS
1 stop17h 40mJeju Air
Sun 21/1214:30CTS - GMP
1 stop17h 55mJeju Air
Deal found 12/12£264
Mon 29/1219:50GMP - CTS
1 stop17h 40mJeju Air
Fri 2/114:30CTS - GMP
1 stop17h 55mJeju Air
Deal found 12/12£271
Sat 13/1212:05GMP - HND
Nonstop2h 05mJapan Airlines
Tue 16/1208:20HND - GMP
Nonstop2h 35mJapan Airlines
Deal found 11/12£274
Mon 29/1219:50GMP - CTS
1 stop17h 40mJeju Air
Thu 1/114:30CTS - GMP
1 stop17h 55mJeju Air
Deal found 11/12£282
Sun 14/1208:00GMP - HND
Nonstop2h 05mJapan Airlines
Thu 18/1208:20HND - GMP
Nonstop2h 35mJapan Airlines
Deal found 11/12£287
Sat 20/1219:40GMP - HND
Nonstop2h 05mJapan Airlines
Mon 22/1208:20HND - GMP
Nonstop2h 35mJapan Airlines
Deal found 10/12£288
Thu 25/1219:30GMP - HND
Nonstop2h 05mKorean Air
Fri 2/119:50HND - GMP
Nonstop2h 35mKorean Air
Deal found 10/12£291
Mon 22/1216:20GMP - HND
Nonstop2h 15mKorean Air
Fri 2/119:50HND - GMP
Nonstop2h 35mKorean Air
Deal found 9/12£296
Sun 14/1208:00GMP - HND
Nonstop2h 05mJapan Airlines
Tue 16/1208:20HND - GMP
Nonstop2h 35mJapan Airlines
Deal found 11/12£297
Sun 28/1219:40GMP - HND
Nonstop2h 05mJapan Airlines
Thu 1/108:20HND - GMP
Nonstop2h 35mJapan Airlines
Deal found 11/12£299

Find 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 12 December 2025.

Round-trip from

£218

One-way from

£125

Popular in

October

Cheapest in

July

Average price

£190

Good round-trip deal

£112 or less

Good one-way deal

£51 or less
ANA
  • ANA
  • 14/4-22/4
  • Nonstop
  • 4h 25m total
  • South Korea to Japan
Jeju Air
  • Jeju Air
  • 23/12
  • 1 total stop
  • 17h 40m total
  • South Korea to Japan
Highest demand for flights based on searches. 15% potential increase in price (£22 potential increase over avg. return price).
Cheapest flight prices on average. 5% potential price decrease (£6 potential savings vs. average return price).
Average for round-trip flights in December 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.

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 12 December 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

SeoulTokyo

GMP - HND

GMPHND

Seoul Gimpo Intl

Sat 24/1

19:40-21:45

Nonstop2h 05m

Tokyo Haneda

Tue 27/1

19:30-22:05

Nonstop2h 35m

£274

SeoulTokyo

GMP - HND

GMPHND

Seoul Gimpo Intl

Fri 23/1

19:40-21:45

Nonstop2h 05m

Tokyo Haneda

Mon 26/1

15:45-18:20

Nonstop2h 35m

£274

SeoulTokyo

GMP - HND

GMPHND

Seoul Gimpo Intl

Sat 17/1

19:40-21:45

Nonstop2h 05m

Tokyo Haneda

Tue 20/1

08:20-10:55

Nonstop2h 35m

£274

SeoulTokyo

GMP - HND

GMPHND

Seoul Gimpo Intl

Fri 30/1

19:40-21:45

Nonstop2h 05m

Tokyo Haneda

Mon 2/2

15:45-18:20

Nonstop2h 35m

£275

SeoulTokyo

GMP - HND

GMPHND

Seoul Gimpo Intl

Wed 15/4

16:10-18:30

Nonstop2h 20m

Tokyo Haneda

Thu 23/4

19:45-22:05

Nonstop2h 20m

£281

SeoulTokyo

GMP - HND

GMPHND

Seoul Gimpo Intl

Mon 13/4

16:10-18:30

Nonstop2h 20m

Tokyo Haneda

Mon 20/4

19:45-22:05

Nonstop2h 20m

£281

SeoulTokyo

GMP - HND

GMPHND

Seoul Gimpo Intl

Thu 16/4

16:10-18:30

Nonstop2h 20m

Tokyo Haneda

Wed 22/4

19:45-22:05

Nonstop2h 20m

£281

SeoulTokyo

GMP - HND

GMPHND

Seoul Gimpo Intl

Wed 15/4

16:10-18:30

Nonstop2h 20m

Tokyo Haneda

Wed 22/4

19:45-22:05

Nonstop2h 20m

£281

SeoulTokyo

GMP - HND

GMPHND

Seoul Gimpo Intl

Tue 14/4

16:10-18:30

Nonstop2h 20m

Tokyo Haneda

Mon 20/4

19:45-22:05

Nonstop2h 20m

£281

SeoulTokyo

GMP - HND

GMPHND

Seoul Gimpo Intl

Tue 14/4

16:10-18:30

Nonstop2h 20m

Tokyo Haneda

Tue 21/4

19:45-22:05

Nonstop2h 20m

£281

Flights are sorted by cheapest return flights first.

Deals found on 10/12

Showing 1-10 of 57 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, October is the cheapest month in which you can book a flight from South Korea to Japan (average of £25). Flying from South Korea to Japan in February is currently the most expensive (average of £83). 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 12 December 2025.

It’s typically best to fly out from South Korea to Japan in the afternoon. Doing so could potentially save you 23% on the flight price compared to flying in the evening, which is usually more expensive.

What is the cheapest day to fly from South Korea to Japan?

Use this chart to determine the cheapest time to fly return from South Korea to Japan. Price data was last updated on 23 February 2025.

Travellers seeking maximum savings on their South Korea to Japan flight should consider departing on Thursday at midday when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

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 12 December 2025.

The most flights from KR0 to JP0 are scheduled on a Thursday (45 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (42 on average).

How often are flights from South Korea to Japan delayed?

About 17% of weekly flights between South Korea and Japan have experienced delays in the past year, with the average delay time being 99 minutes.

What is the most punctual flight time for South Korea to Japan flights?

Historically, flights departing in the evening are less likely to be delayed, whereas flights leaving at night tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Tuesday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on South Korea to Japan flights?

Over the past year, Japan Airlines have had the lowest number of delays on this route, with just 5% of flights being delayed.

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 12 December 2025.
Read through reviews of airlines operating flights from South Korea to Japan, such as Jin Air, Korean Air, andAsiana Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Food

7.9

Comfort

8.3

Crew

9.1

Boarding

8.8

Entertainment

7.9

Overall

8.7
8.7
Very Good

Food

7.9

Comfort

8.3

Crew

9.1

Boarding

8.8

Entertainment

7.9

Overall

8.7

Food

7.9

Comfort

8.3

Crew

9.1

Boarding

8.8

Entertainment

7.9

Overall

8.7

Food

7.9

Comfort

8.3

Crew

9.1

Boarding

8.8

Entertainment

7.9

Overall

8.7

Food

7.9

Comfort

8.3

Crew

9.1

Boarding

8.8

Entertainment

7.9

Overall

8.7

Food

7.9

Comfort

8.3

Crew

9.1

Boarding

8.8

Entertainment

7.9

Overall

8.7

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?

    Japan Airlines, Korean Air, and Jeju Air can get you from South Korea to Japan in just under 2h 05m. Your travel time can differ by up to 15h 35m. 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 Eastar Jet (£21), Jeju Air (£23), and Air Busan (£25).

  • 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, October is the cheapest month in which you can book a flight from South Korea to Japan (average of £25). Flying from South Korea to Japan in February is currently the most expensive (average of £83). 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

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Alternative routes for South Korea to Japan

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Fly with Cheapflights

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How does Cheapflights help users find flights from South Korea to Japan?

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Why should you use Cheapflights to find cheap flight tickets from South Korea to Japan?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from South Korea to Japan.

Can Cheapflights find flights from South Korea to Japan with no change fees?

Yes! Cheapflights helps users easily find flights from South Korea to Japan with no change fees.

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Not ready to book yet? You can track prices for flights from South Korea to Japan on Cheapflights with our Price Alert feature and get notified when better prices are available.

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