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Cheap Flights from South Korea to Japan

Cheapest return flight prices found by our users on KAYAK in the last 5 days
Sort by: Cheapest
Sapporo
5h 00m2 stops
from £227per person
Osaka
4h 35m2 stops
from £272per person
Tokyo
2h 05mNonstop
from £273per person
Booking Insights

KAYAK's insights & trends for flights to Japan

Get data-powered insights and trends into flights to Japan to help you find the cheapest flights, the best time to fly and much more.

What is the cheapest flight to Japan?

The cheapest ticket to Japan from South Korea found in the last 5 days was to Tokyo Narita Airport, at £78 return. The most popular route is Cheongju (CJJ) to Tokyo Narita Airport (NRT) and the cheapest return ticket found on this route in the last 5 days was £78.

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

The cheapest month for flights from South Korea to Japan is August, when tickets cost £58 (return) on average. On the other hand, the most expensive months are October and February, when the average cost of round-trip tickets is £144 and £102 respectively.

What is the cheapest time of day to fly to Japan?

The cheapest time of day to fly to Japan is generally in the morning, when retur flights cost £173 on average. Morning departures are around 20% cheaper than evening flights, on average. The most expensive time of day to fly to Japan is generally at night, which is peak travel time and where the average cost of a ticket is £229.

How far in advance should I book a flight from South Korea to Japan?

To get a below-average price on a flight from South Korea to Japan, you should book around 4 weeks before departure, which saves you about 37% compared to booking last-minute. For the absolute cheapest price, our data suggests you should book 21 weeks before departure.

Which is the cheapest airport to fly into in Japan?

Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in Japan is Osaka Kansai Intl Airport (KIX), with an average flight price of £56.

Good to know - Cheap tickets from South Korea to Japan

Low season

March
Best time to beat the crowds (8% less expensive on average)
Most popular time to fly (3% more expensive on average)

Flights from South Korea to Japan: the best tips from KAYAK users

Insights shared by verified travellers who flew the route from South Korea to Japan 
Verified travelerFlew with Japan Airlines-May 2026
Side bag with what you need keep with you because they could have geriatric people sitting there and you can't get to your bag up above
Verified travelerFlew with Asiana Airlines-Aug 2024
If you have to switch from Terminal 2 to Terminal 1 it is a bit of a hassle. That needs to be fixed. I should not have to go through two separate security checks after landing in the transfer areas.

FAQs for booking flights from South Korea to Japan

  • How does KAYAK find such low prices on flights from South Korea to Japan?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from South Korea to Japan.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from South Korea to Japan?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from South Korea to Japan is likely to change within 7 days, so travellers know whether to wait or book now.

  • What is the Hacker Fare option on flights from South Korea to Japan?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional return ticket. You could then fly from South Korea to Japan with an airline and back with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from South Korea to Japan?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying from South Korea to Japan up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest day to fly to Japan?

    Based on KAYAK data, the cheapest day to fly to Japan is Saturday when return tickets can be as cheap as £170. On the other hand, the most expensive day to fly is Friday, when return prices are £213 on average.

Reviews of the top 5 airlines flying from South Korea to Japan

 
Need help choosing which airline to fly with from South Korea to Japan? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
9.3
Eastar JetOverall score based on 3 reviews
8.6Comfort
4.6Entertainment
4.6Food
8.6Crew
9.3Boarding
Airline reviews

Great airline. Our bus to the terminal got delayed, but there was no problem to check in last minute. Super friendly terminal staff.

10.0 ExcellentFiruz, Sept 2025
Read more Eastar Jet reviews

Great airline. Our bus to the terminal got delayed, but there was no problem to check in last minute. Super friendly terminal staff.

I like the landing which is nice and safe, seats are also comfortable

Staff on board were good - food was fine tasted good - tv was old 1970ts in seat back but hey it was a 2 out flight so no drama

Very long flight time. Still better than a connection flight. Staff is very good at service. Vegetarian food is not very good.

The business class is excellent. I loved the food, and the crew was very attentive and professional. From boarding to arrival, everything felt smooth and well-organised.

Lousy entertainment system. Crews are excellent. Meal is just mediocre.

Aircraft is pretty old. Seat is not comfortable. Meal quality is disappointing. Entertainment system is not impressive at all.

Great service and comfort level. You can have more of vegetarian food options.

It’s great, long flight and arrive safe at destination

Everything was excellent as I expected. They also had a very caring crew. I had a headache and asked a Tylenol. The crew members kept checking with me how I was doing.

I can't believe they put my wife and I in the two middle seats! It is a very long flight and we had single flyers on either side of us blocking the way to the bathroom! There's no reason to not give one of us the isle seat so we could have managed bathroom needs and snacks with convenience. So I think very poorly of Korean air to put us both in the middle, I've never had that happen before and will probably avoid this airline in the future because of this. We tried to have them change it but they didn't so you pretty much lost a customer because of it.

There could have been better spacing of the passengers, it was crowded in some parts of the plane then other while rows were empty

Plane took off on time and I had the whole row to myself!

Just good - short flight. Not much happens. Left on time and arrived on time.

Smooth sailing trip, pilots are good. Less amount of food offered but the quality is okey.

Kayak uses scammer sites to steal money from their victims.

When one asks for water because they are dehydrated, bring more then a sip or two in a small cup. Bring them a whole bottle.

Food could be better it was okay. Entertainment seems dated it was something but in this day and age could be a lot better.

I am thankful that I was able to fly using Asiana

The customer service was excellent. They noticed that our connecting flight was scheduled too closely for us to complete customs, so they changed the flight. Our initial flight was delayed, and they were able to get us on another flight, all without charging us any additional fees. I would fly them again anytime!

Very clean ,flight attendants very professional,nice , Boarding was very easy

The aircraft was massive (A-380) and became crowded with 400+ passengers on board.

Coming back to America was a peaceful flight everyone and everything was perfect

Tightest knee space ever experienced on any budget airline. Crew polite and efficient, take off and arrival on time. Surprised that they did not offer water on flight except as sales product. Questions about Food and entertainment not applicable since neither are offered.

At the boarding gate, Jeju airline accepted "carry on" bags for checking in for free due to the "limited cabin space". This is because most passengers were carrying multiple bags that exceed the size and weight limit for carry on items. Rather than inspecting carry-on bags at the counter and requiring excess bags to be checked in for a fee, they allowed freeloading at the boarding gate to to the detriment of those who paid the fee for checked bags. This is totally unfair.

As posred earlier the crew was very accommodating & professional. Thank You Allen

All though you can not help it the kids was loud and unruly, The crew was very accommodating and professional. Thank You Allen.

No priority counter check in for families with young children.

The flight was delayed from GUM to ICN, there was no notification on how delayed the flight would be. Although we received notice, there was no specified time given. The flight was also very uncomfortable.

More options for your flight to Japan

Complete your trip to Japan with a hotel stay or car hire