Cheapest airlines flights from Seoul to Kumamoto City

You can choose from 2 airlines that fly from Seoul to Kumamoto City, including T'Way Air, Korean Air, Korean Air has lowest fares on this route.
T'Way Air logo T'Way Air
Korean Air logo Korean Air
Airlines are determined based on actual purchased flight tickets from Seoul to Kumamoto City according to previous 12 months data from Trip.com.

Search for direct flights from Seoul to Kumamoto City in the next 3 months. Based on Trip.com's latest 7-day flight data, one-way direct flights start at US$77, and round-trip direct flights start at US$174.

Displayed flight fares from Seoul to Kumamoto City are based on average prices across airlines for the next 3 months, according to the latest Trip.com database.

Seoul to Kumamoto City Flight Details

The distance between Seoul and Kumamoto City is about 630.55 km. The average flying time from Seoul to Kumamoto City is around 1 hour 30 minutes. Based on Trip.com's latest data, travel demand is highest in January. The off-season for travel is October.

Cheapest one-way flight priceUS$77
Cheapest return ticket priceUS$174
Cheapest monthOctober
Peak season for travelJanuary
Flight distance630.55 km
Average flight time1 hour 30 minutes
Popular airlineT'Way Air
Flight statistics for the Seoul–Kumamoto City route are based on aggregated booking data from Trip.com over the past 12 months.

Trip.com Price Insights on Flights from Seoul to Kumamoto City

Which month has the cheapest one-way flights from Seoul to Kumamoto City?

The average price of one-way flights from Seoul to Kumamoto City purchased by Trip.com users by month over the past 12 months.

Based on Trip.com’s data, the cheapest month for flights from Seoul to Kumamoto City is September, with an average price of US$50; while the month with the highest flight price is usually February, with an average price of up to US$97.

US$97
US$74
US$50
US$27
    Cheapest
  • US$91
    Apr
  • US$81
    May
  • US$58
    Jun
  • US$55
    Jul
  • US$55
    Aug
  • US$50
    Sep
  • US$57
    Oct
  • US$79
    Nov
  • US$82
    Dec
  • US$94
    Jan
  • US$97
    Feb
  • US$97
    Mar

Which month has the cheapest round-trip flights from Seoul to Kumamoto City?

The average price of round-trip flights from Seoul to Kumamoto City purchased by Trip.com users by month over the past 12 months.

Based on data from Trip.com, the lowest prices for round-trip flights from Seoul to Kumamoto City are found during September, with an average price of US$107. Conversely, the highest prices are found during February, with an average price of up to US$232.

US$232
US$170
US$107
US$45
    Cheapest
  • US$174
    Apr
  • US$164
    May
  • US$127
    Jun
  • US$128
    Jul
  • US$127
    Aug
  • US$107
    Sep
  • US$141
    Oct
  • US$191
    Nov
  • US$225
    Dec
  • US$209
    Jan
  • US$232
    Feb
  • US$226
    Mar

What is the cheapest day of the week to fly from Seoul to Kumamoto City?

Average weekly flight prices from Seoul to Kumamoto City by travel date (Based on Trip.com’s past 12 months of data)

Based on Trip.com’s past 12 months of flight data, the cheapest day to fly from Seoul to Kumamoto City is Tuesday, with average prices lower than on other days. Avoid Friday, as prices are usually highest then.

US$123
US$106
US$88
US$71
  • US$103
    Mon
  • US$88
    Tue
  • US$111
    Wed
  • US$97
    Thu
  • US$123
    Fri
  • US$99
    Sat
  • US$99
    Sun

When is the cheapest day to fly from Seoul to Kumamoto City during International Workers' Day?

Based on Trip.com's data over the past 3 days, these are the lowest one-way flight prices from Seoul to Kumamoto City during International Workers' Day.

International Workers' Day is scheduled for May 1. The cheapest flights from Seoul to Kumamoto City are available on Apr 28, with fares starting at US$76.

US$215
US$146
US$76
US$7
  • US$98
    27
    Apr
  • US$76
    28
  • US$76
    29
  • US$170
    30
  • US$215
    1
    May
  • US$96
    2
  • US$108
    3

Frequently Asked Questions

  • What are the cheapest flights from Seoul to Kumamoto City (SEL-KMJ)?

    Based on Trip.com data, Korean Air offers one-way fares as low as US$77 on Cheapest nonstop routes (e.g. ICN to KMJ on Mon, Apr 27), while T'Way Air offers Cheapest nonstop round-trips from US$174 departing on Wed, Jun 10 and returning on Mon, Jun 15.
  • At the moment, you can catch a nonstop flight from Seoul to Kumamoto City with the following airlines, including: T'Way Air Korean Air Selected airlines are based on historical data collected from flight bookings users made on Trip.com within the last 90 days.
  • It takes about 1 hour 30 minutes to fly from Seoul to Kumamoto City.
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Seoul to Kumamoto City is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.
  • Based on Trip.com data in the past 4 weeks, there is 14 flight per week flying from Seoul to Kumamoto City. You can check the weekly schedule for popular airlines on this route below: T'Way Air: S/M/T/W/T/F/S -- TW287 (08:02) Korean Air: S/M/T/W/T/F/S -- KE2155 (17:11)
  • To find best deals on flights from Seoul to Kumamoto City, you can use various tools on Trip.com:
    · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Mon, Apr 27, with one-way flights priced at just US$77.
    · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is Korean Air.
    · Set up price alerts to easily monitor ticket prices without having to check every day.
    · Check Trip.com flight deals and promo codes frequently.
    · Avoid peak season unless you book very early. It seems the peak season for Kumamoto City travel is around January.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from Seoul to Kumamoto City is October, when demand for travel is lower.
  • After crunching the numbers on our April flight calendar, it's currently cheapest to fly from Seoul to Kumamoto City on April 27, 2026 with Jeju Air, with prices starting at US$58.
  • You can land at any one of the following hubs in Kumamoto City, with Incheon International Airport to Kumamoto Airport (ICN-KMJ) is by far the most common option on this route: Kumamoto Airport (KMJ).
  • The time difference between Kumamoto City and Seoul is 0h.
  • Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.

Trip.com Airline Insights on Flights from Seoul to Kumamoto City

Which airline offers the cheapest direct flights from Seoul to Kumamoto City?

Data is based on the average price of all nonstop flights from Seoul to Kumamoto City on Trip.com over the past 12 months.

Based on Trip.com’s data from the past 12 months, Asiana Airlines provides the lowest-priced direct flights from Seoul to Kumamoto City, with fares starting at US$98.

US$40
US$98
US$156
US$214
US$272
Asiana Airlines
US$98
Asiana Airlines
T'Way Air
US$130
T'Way Air
Korean Air
US$134
Korean Air
All Nippon Airways
US$272
All Nippon Airways

Which airline operates the most flights from Seoul to Kumamoto City?

Total flights from Seoul to Kumamoto City across all airlines. (Based on Trip.com data from the past month)

Based on Trip.com’s data from the past month, Korean Air/T'Way Air/Delta Air Lines operates the most frequent flights from Seoul to Kumamoto City, with 8 flights per week.

8
Korean Air
8
Korean Air
T'Way Air
8
T'Way Air
Delta Air Lines
8
Delta Air Lines

How many flights fly from Seoul to Kumamoto City daily?

The data is based on the flight numbers for each day of the week from Seoul to Kumamoto City within the Trip.com database over the past month.

Based on the past month's historical data from Trip.com, the number of flights from Seoul to Kumamoto City is the highest on Friday/Saturday and the lowest on Monday/Tuesday/Wednesday/Thursday.

15
14
12
11
Highest
12
Mon
12
Tue
12
Wed
12
Thu
15
Fri
15
Sat
14
Sun

Note: Prices shown on this page are the estimated lowest prices found in the last 24 hours and include all taxes and fees.

Book with no extra fees

Prices displayed on this page are all-inclusive (incl. taxes, fuel surcharges, Civil Aviation Development Fund, etc.), and all fees are clearly shown before you pay. Charges for checked baggage, onboard meals, Wi‑Fi, and other optional services are also included where applicable in the flight cards.

Real-time pricing updates

Prices, availability, and travel details on this page have been updated within the last 24 hours, and for many routes are refreshed in real time. The more popular the route, the more accurate and up-to-date the data.

Change & Cancellation Policy

Trip.com shows the change and cancellation rules for each ticket during the booking process, including all related fees and conditions. Please refer to the following scenarios:
Voluntary cancellation/change:
To request a change or cancellation, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and flight segment, and submit your request. Please note that additional charges may apply based on the airline’s fare rules.
Cancellation/change due to a flight schedule change:
If your flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For full details of change and cancellation policies, please refer to the customer support pages.