A rural landscape with a field of yellow flowers, cherry blossom trees, and traditional houses.

Cheap Flights to Koshi

View ₩51,200 flight on Sun, Sep 20, 2026Opens in a new window

Popular airlines to Koshi

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 40% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our rewards
    Sign in

How much is the cheapest flight to Koshi?

Prices were available within the past 7 days and start at ₩51,200 for one-way flights and ₩127,100 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Eastar Jet
Trinity Airways
Trinity Airways with baggage
Japan Airlines
Korean Air

Frequently asked questions

What is the name of Koshi's airport?
Kumamoto Airport (KMJ) is the most frequently utilized airport in Koshi.
How far is Aso Kumamoto Airport from central Koshi?
If you're staying in central Koshi, it's wise to organize how you'll get into the city before you land. The downtown area is 11 kilometers from Aso Kumamoto Airport.
What airport is best to fly into Koshi?
Flying to Koshi means stepping off the plane at Aso Kumamoto Airport or Ariake Saga Airport (HSG). The first is 11 kilometers away from downtown. The second is 48 kilometers away.
How many airlines fly to Koshi?
There are a total of 15 air carriers connecting Koshi with 13 airports around the world.
Which airlines fly to Koshi?
Koshi receives the majority of its flights from Japan Airlines, ANA and Solaseed Air with Japan Airlines being the number one choice of airline. Tokyo is the most popular city for travelers to set off from.
How many nonstop flights are there to Koshi?
Flying to someplace new is much more fun when there aren't any annoying stopovers. If you're heading to Koshi, the great news is that there are around 356 nonstop flights each week.
Where are the most popular flights to Koshi departing from?
Flights to Koshi from Tokyo, Osaka and Seoul airports are always popular.
How long is the flight to Koshi Airport?
If it's Tokyo you're departing, you'll be airborne for around 2 hours and 5 minutes before you arrive in Koshi. Tarmac to tarmac from Osaka typically takes 1 hour and 17 minutes and from Seoul, the average flight time is 1 hour and 29 minutes.
How to book the cheapest flight to Koshi?
If you want to have some extra spending money on your trip to Koshi, listen up! As every experienced traveler knows, don't leave booking until the last minute. Prices are often highest close to the departure date. Also, do some online research and compare your options. If your destination has several airports, you may be able to nab a terrific price by flying into one that's farther away. Finally, be prepared to book quickly if you find a great price. It might not be available for long. With a bit of know-how and a little luck, the ideal airfare will be yours.
Do you have any tips for my flight to Koshi?
No matter where you're coming from, flying can be an enjoyable experience if you're well prepared. Follow these handy tips that will help get your Koshi vacation started on the right foot. What to pack in your hand luggage:
  • The secret to having a hassle-free travel experience is to pack ahead. So, let's start with the basics: passport, official ID, bank cards and important medications. Next, bring on board items that'll help pass the time, like some electronic devices or a few magazines. It's also smart to bring your chargers, a neck pillow and a pair of headphones. And of course, don't forget to toss in toiletry items like a toothbrush, cleansing wipes and a spare change of clothes.
Do not pack the following items in your hand luggage:
  • Leave all your full-sized bottles of shampoo and conditioner in your checked baggage. Any liquids or gels in your carry-on bag larger than 3.4 ounces (100 milliliters) will be confiscated by authorities. Sharp or pointed objects, like your trusty pocket knife, and dangerous products which are explosive or flammable, such as aerosol cans, spray paint and gasoline, are also banned.
What to wear on a flight:
  • Your goal here is to feel as comfortable as possible. Choose slip-on footwear, dress in loose, natural-fiber clothing and don't forget to take a jacket in case it gets chilly in the cabin.
  • Deep vein thrombosis (DVT), a blood clotting condition caused by extended periods of inactivity, can be a risk on long-haul flights. Try to wander around the cabin or do some simple exercises in your seat to promote better circulation.
How to get through airport security fast when flying to Koshi?
The trick is to be organized before you arrive at airport security. That way, you'll be stepping onto that plane to Koshi in next to no time. Follow these helpful tips and get your vacation off to a terrific start:
  • Your travel ID and boarding pass will need to be inspected by airport security. Keep them someplace accessible so you don't hold up the line.
  • After that, both you and your carry-on bag will be X-rayed. To make the process quick and painless, take off anything that is likely to set the alarm off. Items like your belt, jacket and headphones need to go through the machine.
  • Electronic devices like phones and laptops will also have to go through the machine to be scanned. Don't worry, you'll be back online soon enough.
  • Remember to remove liquids and gels from your carry-on luggage. They usually need to be sent through the X-ray separately. Each item should be in a container no larger than 3.4 ounces (100 milliliters) and everything must fit in a quart-size (one liter), clear zip-close bag.
  • The right choice of footwear can save you several minutes. Hiking boots are often required to be removed and separately scanned. Lightweight sneakers usually aren't.
  • Avoid taking prohibited items in your carry-on bag. If you have any sharp or pointed objects, put them in your checked suitcase. They won't be allowed in the cabin.

Book with confidence

Searching for cheap flights to Koshi? No travel company presents more choices than Expedia if you're looking to compare flights to Koshi. With more airlines, cheaper flights, fewer stops, and more departure and arrival times travellers should ensure they search on Expedia before any holiday to Kumamoto Prefecture. Expedia provides the cheapest flights to many destinations in Kumamoto Prefecture and you may find even greater savings if you combine your flight with a hotel stay in Koshi.

Travel information

Destination airport
Ariake Saga
Destination airport IATA code
HSG
Destination city name
Saga
Roundtrip price
₩145,420

Trending flights to Koshi

Prices were available within the past 7 days and start at ₩51,200 for one-way flights and ₩127,100 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Eastar Jet
*Available to Expedia members.