In terms of precipitation, rainfall in Kumamoto ranges from 2.0 - 14.2 inches per month. June is typically the wettest month, when rainfall can reach 14.2 in. December is typically the driest time to visit Kumamoto when rainfall is around 2.0 in.

If weather is an important factor for your trip to Kumamoto, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 41.0 F).

What is the cheapest time of day to fly from SAN to KMJ?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from San Diego to Kumamoto as you normally would.

Can I find deals for flights from San Diego to Kumamoto that include hotel bookings?

Yes. In addition to deals on San Diego to Kumamoto flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from San Diego to Kumamoto?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Diego to Kumamoto.

Can I find deals for business class flights from San Diego to Kumamoto?

Yes. Cheapflights offers flight deals from San Diego to Kumamoto by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

$996+ Flights from San Diego to Kumamoto

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Cheap flight deals from San Diego to Kumamoto

Round-trip from	$996 (Japan Airlines)

From San Diego to Kumamoto

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Find flight deals from San Diego to Kumamoto

Cheapest flights from San Diego to Kumamoto
Explore the most affordable flight options available from San Diego to Kumamoto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 18, 2025.

Mon 9/291:35 pmSAN - KMJ

1 stop27h 45mJapan Airlines

Fri 10/39:55 amKMJ - SAN

1 stop17h 15mJapan Airlines

Deal found 7/16

$996

Mon 9/296:15 amSAN - KMJ

2 stops21h 25mANA

Fri 10/312:20 pmKMJ - SAN

2 stops22h 09mANA

Deal found 7/17

$1,018

Best flights from San Diego to Kumamoto
Discover carefully curated flight deals from San Diego to Kumamoto that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 18, 2025.

Mon 9/291:35 pmSAN - KMJ

1 stop27h 45mJapan Airlines

Fri 10/39:55 amKMJ - SAN

1 stop17h 15mJapan Airlines

Deal found 7/14

$996

Mon 9/298:00 amSAN - KMJ

2 stops18h 20mANA

Fri 10/32:55 pmKMJ - SAN

2 stops20h 57mANA

Deal found 7/14

$1,019

Cheapflights Fare Finder

Use the filters below to find and compare flights from San Diego to Kumamoto that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San DiegoKumamoto

SAN - KMJ

SANKMJ

San Diego

Mon 9/29

1:35 pm-9:20 am

1 stop27h 45m

Kumamoto

Fri 10/3

9:55 am-11:10 am

1 stop17h 15m

$996

San DiegoKumamoto

SAN - KMJ

SANKMJ

San Diego

Mon 9/29

6:15 am-7:40 pm

2 stops21h 25m

Kumamoto

Fri 10/3

12:20 pm-6:29 pm

2 stops22h 09m

$1,018

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/15

Best time to book a flight from San Diego to Kumamoto

Have a flexible travel schedule? Discover the best time to fly to Kumamoto from San Diego with our price prediction graph.

Estimated round-trip price

Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Reviews of airlines servicing Kumamoto

See what other customers who have flown with ANA and Japan Airlines from San Diego to Kumamoto have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

ANA

8.4

Very good

913 reviews

Reviews

1 / 20

2.0

Mediocre

Anonymous,Jul 2025

MNL - NRT

Flight delayed from 7pm to 2am, united airlines sold our tickets so they had to book us with AA

ANA

8.4

Very good

913 reviews

ANA

8.4

Very good

913 reviews

Reviews

1 / 20

2.0

Mediocre

Anonymous,Jul 2025

MNL - NRT

Flight delayed from 7pm to 2am, united airlines sold our tickets so they had to book us with AA

Japan Airlines

8.3

Very good

1,514 reviews

ANA

8.4

Very good

913 reviews

Reviews

1 / 20

2.0

Mediocre

Anonymous,Jul 2025

MNL - NRT

Flight delayed from 7pm to 2am, united airlines sold our tickets so they had to book us with AA

Related info for your journey

Can I find deals for flights from San Diego to Kumamoto that include hotel bookings?
Yes. In addition to deals on San Diego to Kumamoto flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from San Diego to Kumamoto?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Diego to Kumamoto.
Can I find deals for business class flights from San Diego to Kumamoto?
Yes. Cheapflights offers flight deals from San Diego to Kumamoto by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

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$996+ Cheap flights from San Diego (SAN) to Kumamoto (KMJ)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/29. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from San Diego to Kumamoto with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from San Diego to Kumamoto

Round-trip from

Find flight deals from San Diego to Kumamoto

Cheapest flights from San Diego to KumamotoExplore the most affordable flight options available from San Diego to Kumamoto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 18, 2025.

Explore the most affordable flight options available from San Diego to Kumamoto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 18, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from San Diego to Kumamoto that are best for you.

Best time to book a flight from San Diego to Kumamoto

Have a flexible travel schedule? Discover the best time to fly to Kumamoto from San Diego with our price prediction graph.

Reviews of airlines servicing Kumamoto

See what other customers who have flown with ANA and Japan Airlines from San Diego to Kumamoto have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

Find useful and relevant information for your journey from San Diego to Kumamoto. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

Can I find deals for flights from San Diego to Kumamoto that include hotel bookings?

How can I find direct flights from San Diego to Kumamoto?

Can I find deals for business class flights from San Diego to Kumamoto?

Traveling to a place near Kumamoto?

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Alternative routes for San Diego to Kumamoto

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Travel Smart

Cheapest flights from San Diego to Kumamoto
Explore the most affordable flight options available from San Diego to Kumamoto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 18, 2025.