$215 Cheap Flights from Seoul (GMP) to Kumamoto (KMJ)

View $215 flight on Sun, Aug 10, 2025Opens in a new window

Popular airlines from Gimpo Intl. Airport (GMP) to Kumamoto Airport (KMJ)

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Cheap Flights from Seoul to Kumamoto (GMP-KMJ)

Prices were available within the past 7 days and start at $215 for one-way flights and $323 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

All Nippon Airways
Wed, Aug 27 - Sat, Aug 30
GMP
Seoul
KMJ
Kumamoto
$323 Roundtrip, found 9 hours ago
$323
Roundtrip
found 9 hours ago
Select All Nippon Airways flight, departing Wed, Aug 27 from Seoul to Kumamoto, returning Sat, Aug 30, priced at $323 found 9 hours ago
All Nippon Airways
Thu, Sep 4 - Sat, Sep 6
GMP
Seoul
KMJ
Kumamoto
$324 Roundtrip, found 22 hours ago
$324
Roundtrip
found 22 hours ago
Select All Nippon Airways flight, departing Thu, Sep 4 from Seoul to Kumamoto, returning Sat, Sep 6, priced at $324 found 22 hours ago
Japan Airlines
Sat, Sep 13 - Sat, Sep 20
GMP
Seoul
KMJ
Kumamoto
$329 Roundtrip, found 12 hours ago
$329
Roundtrip
found 12 hours ago
Select Japan Airlines flight, departing Sat, Sep 13 from Seoul to Kumamoto, returning Sat, Sep 20, priced at $329 found 12 hours ago
Japan Airlines
Thu, Sep 4 - Sat, Sep 6
GMP
Seoul
KMJ
Kumamoto
$331 Roundtrip, found 22 hours ago
$331
Roundtrip
found 22 hours ago
Select Japan Airlines flight, departing Thu, Sep 4 from Seoul to Kumamoto, returning Sat, Sep 6, priced at $331 found 22 hours ago
All Nippon Airways
Thu, Sep 4 - Sat, Sep 6
GMP
Seoul
KMJ
Kumamoto
$331 Roundtrip, found 22 hours ago
$331
Roundtrip
found 22 hours ago
Select All Nippon Airways flight, departing Thu, Sep 4 from Seoul to Kumamoto, returning Sat, Sep 6, priced at $331 found 22 hours ago
Japan Airlines
Wed, Sep 17 - Fri, Sep 19
GMP
Seoul
KMJ
Kumamoto
$333 Roundtrip, found 1 day ago
$333
Roundtrip
found 1 day ago
Select Japan Airlines flight, departing Wed, Sep 17 from Seoul to Kumamoto, returning Fri, Sep 19, priced at $333 found 1 day ago
All Nippon Airways
Thu, Sep 4 - Sat, Sep 6
GMP
Seoul
KMJ
Kumamoto
$338 Roundtrip, found 22 hours ago
$338
Roundtrip
found 22 hours ago
Select All Nippon Airways flight, departing Thu, Sep 4 from Seoul to Kumamoto, returning Sat, Sep 6, priced at $338 found 22 hours ago
All Nippon Airways
Wed, Aug 27 - Sat, Aug 30
GMP
Seoul
KMJ
Kumamoto
$341 Roundtrip, found 9 hours ago
$341
Roundtrip
found 9 hours ago
Select All Nippon Airways flight, departing Wed, Aug 27 from Seoul to Kumamoto, returning Sat, Aug 30, priced at $341 found 9 hours ago
All Nippon Airways
Thu, Sep 4 - Sat, Sep 6
GMP
Seoul
KMJ
Kumamoto
$342 Roundtrip, found 22 hours ago
$342
Roundtrip
found 22 hours ago
Select All Nippon Airways flight, departing Thu, Sep 4 from Seoul to Kumamoto, returning Sat, Sep 6, priced at $342 found 22 hours ago
All Nippon Airways
Wed, Aug 27 - Sat, Aug 30
GMP
Seoul
KMJ
Kumamoto
$345 Roundtrip, found 9 hours ago
$345
Roundtrip
found 9 hours ago
Select All Nippon Airways flight, departing Wed, Aug 27 from Seoul to Kumamoto, returning Sat, Aug 30, priced at $345 found 9 hours ago

Alternative airports near Kumamoto

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Kumamoto Airport KMJ. Cheapest and Closest option available. Average driving time to city center is 20 minutes. Flights from $454
KMJ
Kumamoto Airport
CheapestClosest
Average driving time to city center20 min
Flights from $454
Flights from Seoul (GMP) to Kumamoto (KMJ)
Origin airport
Gimpo Intl.
Destination airport
Kumamoto
Airlines serving
All Nippon Airways, Japan Airlines
Roundtrip price
$322
Distance
398 mi

Seoul to Kumamoto Flights

The cheapest times to fly from Seoul to Kumamoto

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 Seoul to Kumamoto are during the month of August. You can find some of the cheapest flights from Seoul to Kumamoto with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Seoul to Kumamoto

Sunday is one of the best days to book for cheap flights from Seoul to Kumamoto: 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 Seoul to Kumamoto

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 Seoul to Kumamoto in 2025. You can also book with separate airlines for your outbound and return journeys, from $215 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 Seoul to Kumamoto 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 Seoul to Kumamoto 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 Gimpo Intl. Airport (GMP) to Kumamoto Airport (KMJ) cost?
Discover the latest flight deals from GMP to KMJ 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 GMP to KMJ?
The cheapest flights from GMP to KMJ 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 Gimpo Intl. Airport (GMP) to Kumamoto Airport (KMJ)?
You can't fly nonstop from Seoul (GMP-Gimpo Intl.) to Kumamoto Airport (KMJ). However, you can arrive in Kumamoto without any layovers by leaving from Incheon Intl. Airport (ICN).
What is the cheapest airline that flies from GMP to KMJ?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from GMP to KMJ. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Gimpo Intl. Airport (GMP) to Kumamoto Airport (KMJ)?
There are no daily direct flights available from Gimpo Intl. Airport (GMP) to Kumamoto Airport (KMJ). But you can opt for flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be on your way before you know it.
What day of the week has the most flights from GMP to KMJ?
Typically you'll find the widest variety of flight choices on a Friday. Tuesdays are often the quietest.* But this can change depending on the airline, season and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Gimpo Intl. Airport (GMP) to Kumamoto Airport (KMJ)?
Book a flight from Gimpo Intl. Airport (GMP) to Kumamoto Airport (KMJ) that takes off before 3 PM to reduce the risk of delays and cancellations. Departures after this hour 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.
Is it cheaper to buy a plane ticket from Gimpo Intl. Airport (GMP) to Kumamoto Airport (KMJ) last-minute?
Last-minute bookings from GMP to KMJ are usually more expensive. To lock in the cheapest rates, start looking for flights ahead of time. That being said, if you're flexible with your travel dates, you may land a cheap fare right before you leave.
Is it cheaper to book a GMP to KMJ flight and hotel package?
Compared with arranging flights and hotels separately, booking a GMP to KMJ flight and hotel package with Expedia could lead to significant savings. Better still, managing everything in one place takes the hassle out of travel planning. Simply pick your flights and select from our wide range of stays, then personalize your trip with extras like tours and car rentals.
Can I cancel or change the date of my flight from Gimpo Intl. Airport (GMP) to Kumamoto Airport (KMJ)?
If you booked your GMP to KMJ flight within the last 24 hours, you may be able to cancel or modify it without fees. Depending on the airline and the type of ticket you purchased, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal for further details.

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*Available to One Key members.