$100 Find Cheap Flights from Japan to South Korea

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KAYAK's insights & trends for flights to South Korea

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

What is the cheapest flight to South Korea?

These are the best return prices found by users searching on KAYAK in the last 72 hours.

The cheapest ticket to South Korea from Japan found in the last 72 hours was to Cheongju, at $113 return. The most popular route is Fukuoka (FUK) to Incheon Intl Airport (ICN) and the cheapest return airline ticket found on this route in the last 72 hours was $159.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Japan to South Korea, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Japan to South Korea is September, when tickets cost $290 (return) on average. On the other hand, the most expensive months are December and January, when the average cost of round-trip tickets is $436 and $422 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights to South Korea, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below-average price on the flight from Japan to South Korea, you should book around 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 23 weeks before departure.

Which is the cheapest airport to fly into in South Korea?

Prices will differ depending on the departure airport, but generally, the cheapest airport to fly to in South Korea is Busan Gimhae Airport (PUS), with an average flight price of $161.


Good to know

Low seasonMay
High seasonAugust
Cheapest flight$100
Best time to beat the crowds (5% less expensive on average)
Most popular time to fly (4% more expensive on average)
Flight from Osaka to Incheon

FAQs for booking flights from Japan to South Korea

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

    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 Japan to South Korea.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Japan to South Korea 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 Japan to South Korea?

    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 Japan to South Korea 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 Japan to South Korea?

    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 Japan to South Korea 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 South Korea?

    Based on KAYAK data, the cheapest day to fly to South Korea is Thursday when return tickets can be as cheap as $323. On the other hand, the most expensive day to fly is Tuesday, when return prices are $528 on average.

  • What is the cheapest time of day to fly to South Korea?

    The cheapest time of day to fly to South Korea is generally in the morning, when round-trip flights cost $255 on average. The most expensive time of day to fly to South Korea is generally in the morning, which is peak travel time and where the average cost of a ticket is $255.

Top 4 airlines serving from Japan to South Korea

 
Need help choosing which airline to fly with from Japan to South Korea? 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.
8.4
Korean AirOverall score based on 1088 reviews
8.1Food
8.5Boarding
8.3Comfort
8.2Entertainment
8.7Crew
Airline reviews

Korean air has a little bit more seating space than Asiana air.

8.0 ExcellentAnonymous, June 2025CRK - ICN
Read more Korean Air reviews

Korean air has a little bit more seating space than Asiana air.

There was a lot of partial tv shows but not enough to last the flight. The food was incredible! The crew were so helpful and patient. Lots more space than what I usually get on an international flight. Very comfortable!

Stingy on the drinks - 15 hour direct flight and could barely get attention for some water

Unfortunately, there has been a boarding and departure delay. However, as usual, the flight arrived earlier than the scheduled. There has been a turbulence in-between, it’s unavoidable. I couldn’t complain them.

Not many people, so you can lay down on two seats

The delay in Korea was a pain and set us back a day. I have to give big props to Korean Air for setting up a hotel with dinner and transportation to and from the hotel. I also needed assistance with a wheelchair and they did an outstanding job.

The food on this flight from NRT to ICN was average. The staff were very friendly, but the flight took about 60 minutes longer than it should have because the pilot was only flying at 330mph instead of 500-550. Not sure what the reason is for that, but it meant for a much longer flight.

Flight delayed going to Korea. No free WiFi. Other than that everything else is were good. I would love to fly with Korea airline again

Food choice could be better, plus the crew can walk around and offer snacks and drinks. Also the air-conditioning onboard blows high speed, and very cold makes the trip uncomfortable.

long flights are difficult but the crew and amenities made it a very good experience

The beefsteak on the lunch menu was excellent! I usually do not eat airplane food. I loved it.

Flight was too cold. I wore a regular cotton tee and it wasn’t enough. It was a night time flight so I would have thought a blanket would be provided to passengers. A 4 hour flight and no options for a meal? I flew Asiana the next day from Seoul to Manilla. Same duration, 4 hours. They give everyone a pillow and blanket and serve a meal. Why is United so cheap and holding back meals and amenities? Also, they promote too much gay stuff and DEI in their advertisements. Please be mindful of other beliefs and don’t shove your gay ideology down my throat.

Staff always with a smile and very helpful with my mom who has mobility issues.

It was amazing. I was not expecting the phenomenal customer service Asiana provides.

It was all perfect and very pleasant for such long flights

The seats felt very small. We were supplied with pillows and blankets, which was nice. Lots of noise from the bathroom, plus exterior noise. Made it hard to hear the entertainment system, even using my own noise-cancelling headphones. The food was really bad. I generally request a vegetarian meal and one was supplied, but the pasta was cold and hard and there was nothing pleasant about it. Two meals were served on this flight; one was a repeat of the meal I had had on the flight immediately preceding this one, which was bad enough I didn't even try it. Drinks were very limited. All I wanted was water, and on a 10.5 hour flight, I was given 3 cups of about 3 ounces each.

The seats felt very small. We were supplied with pillows and blankets, which was nice. Lots of noise from the bathroom, plus exterior noise. Made it hard to hear the entertainment system, even using my own noise-cancelling headphones. The food was really bad. I generally request a vegetarian meal and one was supplied, but the pasta was cold and hard and there was nothing pleasant about it. Drinks were very limited. All I wanted was water, and on a 4 hour flight, I was given 2 cups of about 3 ounces each.

Everything was perfect. A flight attendant even brought me snacks after I declined food due to my desire to force myself to follow the destination time zone.

For the most part, it was an enjoyable experience. It's the 2nd half of the journey was a bit uncomfortable. It was on a noticable smaller plane compared to the previous one.

Only process that my luggage didn’t make it to my destination because of short connection but I understand

Easy to board and fly, no frills. Yummy ramen on board.

It was for the most part a 10/10 they said they had entertainment options but all they had was old movies for streaming from the mid 2010’s so like 10 years ago

all good for a very budget flight - well priced and excellent service. Will fly again

Couple of the crew members were really nice and the rest are really rude and didn't help when we needed help, food was not worth it at all and most importantly there's no even entertainment system other than a very interruptive and slow internet and some movies.

I appreciate the economy price of the tickets. The long flight made the comfort level on the lower average side. Wi-Fi connection was not consistent but working. Overall, I would fly again with zip air but next time get the flat, premium seats with the amount of money I would save otherwise.

Comfortable seats and lucky no one was in middle seat. No water on the plane. Plane was on time and staff was fast.

You get what you pay for and nothing more. Wanted a cheap flight and that’s exactly what I got, though it’s human nature to wanting to feel like you got a good deal as well. There was none of that here. I was cheap and they were too. Got to my destination safely and that’s all that really matters.

Nice service. I wish it could provide hot water on the flight.

internet didn't work. No offer of drinks or snacks.

Flight was seamless. Free wifi helped pass the time. Food was okay, just make sure you pre order or pick something up from the airport

Quite ordinary, as might be expected of a budget flight. It was difficult to understand the instructions unless one speaks Japanese, and the seats were quite basic.

Very easy process overall. The staff communicated well and everything was efficient.

Very affordable, smooth check in process, flight attendants were safe and kind, lots of flight availability within Japan.

The seat is so bad Can’t recline the chair

For Travelers with babies, if they can be supported by allowing to carry the Baby stroller upto the Airplane gate, and not submit at the Check-In counter. it will be very convenient. Thankyou.

I didn’t even fly on it can I get my refund

Book cheap flights from Japan to South Korea

Recent return flight deals

5/7Sat
directAir Seoul
2h 10mKIX-ICN
8/7Tue
directAir Seoul
1h 40mICN-KIX
$146
12/7Sat
direct
1h 55mKIX-ICN
16/7Wed
direct
1h 45mICN-KIX
$147
8/12Mon
directZIPAIR
2h 40mNRT-ICN
15/12Mon
directZIPAIR
2h 25mICN-NRT
$250
9/7Wed
directAIR PREMIA
2h 35mNRT-ICN
16/7Wed
directAIR PREMIA
2h 30mICN-NRT
$259
9/7Wed
directAIR PREMIA
2h 35mNRT-ICN
11/7Fri
directAIR PREMIA
2h 30mICN-NRT
$281
24/6Tue
directZIPAIR
2h 30mNRT-ICN
11/1Sun
directZIPAIR
2h 25mICN-NRT
$339
31/8Sun
directAsiana Airlines
1h 50mKIX-ICN
4/9Thu
directAsiana Airlines
1h 45mICN-KIX
$347
31/8Sun
directAsiana Airlines
1h 50mKIX-ICN
31/8Sun
directAsiana Airlines
1h 45mICN-KIX
$358
1/12Mon
directKorean Air
1h 55mKIX-ICN
7/12Sun
directKorean Air
1h 45mICN-KIX
$402
10/7Thu
directKorean Air
2h 30mNRT-ICN
10/7Thu
directKorean Air
2h 30mICN-NRT
$408

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Recent one-way flight deals

17/6Tue
directJeju Air
2h 00mKIX-ICN
$100
19/6Thu
directJeju Air
2h 00mKIX-ICN
$101
26/7Sat
directPeach
1h 55mKIX-ICN
$114
26/7Sat
directPeach
1h 55mKIX-ICN
$120
22/7Tue
directZIPAIR
2h 30mNRT-ICN
$123
15/7Tue
directZIPAIR
2h 30mNRT-ICN
$126
1/12Mon
directKorean Air
2h 05mKIX-ICN
$263
15/7Tue
directAsiana Airlines
2h 20mHND-GMP
$302
17/6Tue
directAsiana Airlines
2h 20mHND-GMP
$313
7/8Thu
directKorean Air
2h 20mHND-GMP
$467

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Last minute flights to South Korea

Last minute flight, train and bus deals

17/6Tue
directJeju Air
2h 00mKIX-ICN
19/6Thu
directJeju Air
1h 50mICN-KIX
$200
16/6Mon
directEastar Jet
1h 55mKIX-ICN
18/6Wed
directEastar Jet
2h 10mICN-KIX
$229
16/6Mon
directJeju Air
2h 05mKIX-ICN
18/6Wed
directJeju Air
1h 45mICN-KIX
$246
17/6Tue
directJin Air
2h 30mNRT-ICN
18/6Wed
directJin Air
2h 25mICN-NRT
$279
17/6Tue
directJin Air
2h 30mNRT-ICN
24/6Tue
directJin Air
2h 25mICN-NRT
$284
16/6Mon
directAIR PREMIA
2h 35mNRT-ICN
19/6Thu
directAIR PREMIA
2h 30mICN-NRT
$364
13/6Fri
directAIR PREMIA
2h 35mNRT-ICN
19/6Thu
directAIR PREMIA
2h 30mICN-NRT
$365
15/6Sun
directAsiana Airlines
2h 30mNRT-ICN
17/6Tue
directAsiana Airlines
2h 20mICN-NRT
$405
14/6Sat
directAsiana Airlines
2h 30mNRT-ICN
16/6Mon
directAsiana Airlines
2h 30mICN-NRT
$427
14/6Sat
directKorean Air
2h 25mHND-GMP
16/6Mon
directKorean Air
2h 20mGMP-HND
$895

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Everything you need to know for your flight to South Korea

Cabin class types available on flights to South Korea

Cabin classes available on flights to South Korea. Prices are the lowest found on KAYAK over the last 7 days. Price and availability is not guaranteed.

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