$106 Cheap Flights from Kumamoto (KMJ) to Seoul (ICN)

View $106 flight on Thu, Jul 31, 2025Opens in a new window

Popular airlines from Kumamoto Airport (KMJ) to Incheon Intl. Airport (ICN)

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Cheap Flights from Kumamoto to Seoul (KMJ-ICN)

Prices were available within the past 7 days and start at $106 for one-way flights and $237 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Asiana Airlines
Thu, Oct 30 - Sat, Nov 1
KMJ
Kumamoto
ICN
Seoul
$237 Roundtrip, found 1 day ago
$237
Roundtrip
found 1 day ago
Select Asiana Airlines flight, departing Thu, Oct 30 from Kumamoto to Seoul, returning Sat, Nov 1, priced at $237 found 1 day ago
Asiana Airlines
Thu, Mar 19 - Thu, Mar 26
KMJ
Kumamoto
ICN
Seoul
$270 Roundtrip, found 4 days ago
$270
Roundtrip
found 4 days ago
Select Asiana Airlines flight, departing Thu, Mar 19 from Kumamoto to Seoul, returning Thu, Mar 26, priced at $270 found 4 days ago
Asiana Airlines
Thu, Oct 30 - Sat, Nov 1
KMJ
Kumamoto
ICN
Seoul
$356 Roundtrip, found 1 day ago
$356
Roundtrip
found 1 day ago
Select Asiana Airlines flight, departing Thu, Oct 30 from Kumamoto to Seoul, returning Sat, Nov 1, priced at $356 found 1 day ago
Asiana Airlines
Thu, Mar 19 - Thu, Mar 26
KMJ
Kumamoto
ICN
Seoul
$382 Roundtrip, found 4 days ago
$382
Roundtrip
found 4 days ago
Select Asiana Airlines flight, departing Thu, Mar 19 from Kumamoto to Seoul, returning Thu, Mar 26, priced at $382 found 4 days ago
All Nippon Airways
Thu, Oct 30 - Sat, Nov 1
KMJ
Kumamoto
ICN
Seoul
$1,050 Roundtrip, found 1 day ago
$1,050
Roundtrip
found 1 day ago
Select All Nippon Airways flight, departing Thu, Oct 30 from Kumamoto to Seoul, returning Sat, Nov 1, priced at $1,050 found 1 day ago
All Nippon Airways
Thu, Oct 30 - Sat, Nov 1
KMJ
Kumamoto
ICN
Seoul
$1,064 Roundtrip, found 1 day ago
$1,064
Roundtrip
found 1 day ago
Select All Nippon Airways flight, departing Thu, Oct 30 from Kumamoto to Seoul, returning Sat, Nov 1, priced at $1,064 found 1 day ago
All Nippon Airways
Sun, Aug 3 - Tue, Aug 12
KMJ
Kumamoto
ICN
Seoul
$1,069 Roundtrip, found 10 hours ago
$1,069
Roundtrip
found 10 hours ago
Select All Nippon Airways flight, departing Sun, Aug 3 from Kumamoto to Seoul, returning Tue, Aug 12, priced at $1,069 found 10 hours ago
All Nippon Airways
Thu, Oct 30 - Sat, Nov 1
KMJ
Kumamoto
ICN
Seoul
$1,097 Roundtrip, found 1 day ago
$1,097
Roundtrip
found 1 day ago
Select All Nippon Airways flight, departing Thu, Oct 30 from Kumamoto to Seoul, returning Sat, Nov 1, priced at $1,097 found 1 day ago
All Nippon Airways
Thu, Oct 30 - Sat, Nov 1
KMJ
Kumamoto
ICN
Seoul
$1,111 Roundtrip, found 1 day ago
$1,111
Roundtrip
found 1 day ago
Select All Nippon Airways flight, departing Thu, Oct 30 from Kumamoto to Seoul, returning Sat, Nov 1, priced at $1,111 found 1 day ago
All Nippon Airways
Sun, Aug 3 - Tue, Aug 12
KMJ
Kumamoto
ICN
Seoul
$1,116 Roundtrip, found 10 hours ago
$1,116
Roundtrip
found 10 hours ago
Select All Nippon Airways flight, departing Sun, Aug 3 from Kumamoto to Seoul, returning Tue, Aug 12, priced at $1,116 found 10 hours ago

Find the cheapest month to fly from Kumamoto (KMJ) to Seoul (ICN)

July is typically the cheapest month to fly

From $114 - $274 per traveler.

Graph displaying average flight prices per month

Flights from Kumamoto (KMJ) to Seoul (ICN)
Origin airport
Kumamoto
Destination airport
Incheon Intl.
Airlines serving
All Nippon Airways
Roundtrip price
$236
Distance
405 mi
Average flight time
1 hour 45 mins

Kumamoto to Seoul Flights

The cheapest times to fly from Kumamoto to Seoul

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Kumamoto to Seoul are during the month of October. You can find some of the cheapest flights from Kumamoto to Seoul with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Kumamoto to Seoul

Sunday is one of the best days to book for cheap flights from Kumamoto to Seoul: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Kumamoto to Seoul

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Kumamoto to Seoul in 2025. You can also book with separate airlines for your outbound and return journeys, from $106 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Kumamoto to Seoul flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Kumamoto to Seoul airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Frequently asked questions

How much does a flight from Kumamoto Airport (KMJ) to Incheon Intl. Airport (ICN) cost?
Discover the latest flight deals from KMJ to ICN by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from KMJ to ICN?
The cheapest flights from KMJ to ICN are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
Which airlines fly direct from Kumamoto Airport (KMJ) to Incheon Intl. Airport (ICN)?
Enjoy a seamless journey to Incheon Intl. Airport (ICN). 3 airlines offer direct flights from Kumamoto Airport (KMJ), including:

  • TWay Air
  • Korean Air
  • Asiana Airlines

What is the cheapest airline that flies from KMJ to ICN?
Currently, the cheapest carrier operating one-way flights from KMJ to ICN is Korean Air. You can take off on this route from $128. This fare is based on the lowest price found on Expedia departing within the next three months. The flight takes off from KMJ on July 27 2025. Prices were last updated on July 17 2025 and have not changed since.
How many flights per day from Kumamoto Airport (KMJ) to Incheon Intl. Airport (ICN)?
With an average of 2 nonstop flights that operate from Kumamoto Airport (KMJ) to Incheon Intl. Airport (ICN) every day, you'll be soaring through the skies in no time.
What are the most popular departure times for flights from Kumamoto Airport (KMJ) to Incheon Intl. Airport (ICN)?
More people fly between KMJ and ICN at 10 AM than at any other point in the day. Looking for a quieter experience? Consider flying outside peak hours and you're likely to save on your fare as well.
What day of the week has the most flights from KMJ to ICN?
Thursday has the most flights from Kumamoto Airport (KMJ) to Incheon Intl. Airport (ICN). Consider taking off on this day and you'll have a greater chance of finding a schedule that works for you.
What is the earliest flight from Kumamoto Airport (KMJ) to Incheon Intl. Airport (ICN)?
Catch the earliest flight at around 10:25AM UTC+9, departing from Kumamoto Airport (KMJ). You'll be in the air for approximately 1h 40m, reaching Incheon Intl. Airport (ICN) at approximately 12:05PM UTC+9.
How long does it take to fly from Kumamoto Airport (KMJ) to Incheon Intl. Airport (ICN)?
Flights from KMJ to ICN have an average travel time of 1 hour and 47 minutes. The total distance between the two is 410 mi.
What is the best time to fly from Kumamoto Airport (KMJ) to Incheon Intl. Airport (ICN)?
Opt for a flight from Kumamoto Airport (KMJ) to Incheon Intl. Airport (ICN) that takes off before 3 PM to reduce the risk of delays and cancellations. Later departures have a 22% higher chance of being canceled, on average.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports do you fly into for Seoul from Kumamoto Airport (KMJ)?
Incheon Intl. Airport (ICN) is the only airport in Seoul with direct flights from Kumamoto Airport (KMJ). Browse the available options and find cheap fares on Expedia.
Is it cheaper to buy a plane ticket from Kumamoto Airport (KMJ) to Incheon Intl. Airport (ICN) last-minute?
Last-minute fares from KMJ to ICN are typically more expensive. For the best rates, start searching for flights well in advance. That said, if you can play around with your travel dates, it's possible to score a cheap ticket right before your journey.
Is it cheaper to book a KMJ to ICN flight and hotel package?
You can save money by securing a KMJ to ICN flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's easy to manage everything in one convenient place. After selecting your ideal accommodations and flights, you can add extras like tours, car rentals and activities.
Can I cancel or change the date of my flight from Kumamoto Airport (KMJ) to Incheon Intl. Airport (ICN)?
Usually, it's possible to reschedule or cancel your KMJ to ICN flight. However, for bookings made more than 24 hours ago, additional charges may apply. Refer to your airline's policies in your itinerary to see what changes are possible and whether any costs are involved. You'll also find further details on our Customer Service portal.

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