$223 Cheap Flights from Seoul (GMP) to Kumamoto (KMJ)

View $223 flight on Sat, Jan 10, 2026Opens in a new window

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

Cheap Flights from Seoul to Kumamoto (GMP-KMJ)

Prices were available within the past 7 days and start at $223 for one-way flights and $314 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

All Nippon Airways
Sat, Jan 17 - Mon, Jan 19
GMP
Seoul
KMJ
Kumamoto
$314 Roundtrip, found 4 days ago
$314
Roundtrip
found 4 days ago
Select All Nippon Airways flight, departing Sat, Jan 17 from Seoul to Kumamoto, returning Mon, Jan 19, priced at $314 found 4 days ago
All Nippon Airways
Sat, Jan 17 - Mon, Jan 19
GMP
Seoul
KMJ
Kumamoto
$331 Roundtrip, found 4 days ago
$331
Roundtrip
found 4 days ago
Select All Nippon Airways flight, departing Sat, Jan 17 from Seoul to Kumamoto, returning Mon, Jan 19, priced at $331 found 4 days ago
All Nippon Airways
Sat, Jan 10 - Mon, Jan 12
GMP
Seoul
KMJ
Kumamoto
$335 Roundtrip, found 2 hours ago
$335
Roundtrip
found 2 hours ago
Select All Nippon Airways flight, departing Sat, Jan 10 from Seoul to Kumamoto, returning Mon, Jan 12, priced at $335 found 2 hours ago
All Nippon Airways
Sat, Jan 17 - Mon, Jan 19
GMP
Seoul
KMJ
Kumamoto
$338 Roundtrip, found 4 days ago
$338
Roundtrip
found 4 days ago
Select All Nippon Airways flight, departing Sat, Jan 17 from Seoul to Kumamoto, returning Mon, Jan 19, priced at $338 found 4 days ago
All Nippon Airways
Thu, Jan 22 - Sat, Jan 24
GMP
Seoul
KMJ
Kumamoto
$339 Roundtrip, found 6 days ago
$339
Roundtrip
found 6 days ago
Select All Nippon Airways flight, departing Thu, Jan 22 from Seoul to Kumamoto, returning Sat, Jan 24, priced at $339 found 6 days ago
All Nippon Airways
Sat, Jan 10 - Mon, Jan 12
GMP
Seoul
KMJ
Kumamoto
$346 Roundtrip, found 2 hours ago
$346
Roundtrip
found 2 hours ago
Select All Nippon Airways flight, departing Sat, Jan 10 from Seoul to Kumamoto, returning Mon, Jan 12, priced at $346 found 2 hours ago
Japan Airlines
Fri, Jan 9 - Tue, Jan 13
GMP
Seoul
KMJ
Kumamoto
$346 Roundtrip, found 1 day ago
$346
Roundtrip
found 1 day ago
Select Japan Airlines flight, departing Fri, Jan 9 from Seoul to Kumamoto, returning Tue, Jan 13, priced at $346 found 1 day ago
All Nippon Airways
Mon, Jun 15 - Mon, Jun 22
GMP
Seoul
KMJ
Kumamoto
$349 Roundtrip, found 15 hours ago
$349
Roundtrip
found 15 hours ago
Select All Nippon Airways flight, departing Mon, Jun 15 from Seoul to Kumamoto, returning Mon, Jun 22, priced at $349 found 15 hours ago
All Nippon Airways
Sat, Apr 11 - Sat, Apr 18
GMP
Seoul
KMJ
Kumamoto
$350 Roundtrip, found 3 days ago
$350
Roundtrip
found 3 days ago
Select All Nippon Airways flight, departing Sat, Apr 11 from Seoul to Kumamoto, returning Sat, Apr 18, priced at $350 found 3 days ago
All Nippon Airways
Sat, Jan 17 - Mon, Jan 19
GMP
Seoul
KMJ
Kumamoto
$352 Roundtrip, found 4 days ago
$352
Roundtrip
found 4 days ago
Select All Nippon Airways flight, departing Sat, Jan 17 from Seoul to Kumamoto, returning Mon, Jan 19, priced at $352 found 4 days ago

Frequently asked questions

How much does a flight from Gimpo Intl. Airport (GMP) to Kumamoto Airport (KMJ) cost?
Secure a cheap one-way flight from $223 or cheap return flight from $314 from Gimpo Intl. Airport (GMP) to Kumamoto Airport (KMJ) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Gimpo Intl. Airport (GMP) to Kumamoto Airport (KMJ)?
Flying in January is a good way to save, as it's the cheapest month for flights between GMP and KMJ. You'll usually find the lowest prices during off-peak months.
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 Gimpo Intl. Airport (GMP) to Kumamoto Airport (KMJ)?
Use the filters on Expedia to compare different airlines and find the cheapest carrier that'll take you from GMP to KMJ. Then, sort your results by "Price (lowest to highest)" to pick up the best deal available.
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.

Travel information

Origin airport
Gimpo Intl.
Destination airport
Kumamoto
Airlines serving
All Nippon Airways, Japan Airlines
Roundtrip price
$313
Distance
398 mi

Book with confidence

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 January. 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 $223 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.

 

Seoul to Kumamoto Flights

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*Available to One Key members.