What is the cheapest month to book a flight from Kumamoto to San Francisco?

Currently, January is the cheapest month in which you can book a flight from Kumamoto to San Francisco (average of $276). Flying from Kumamoto to San Francisco in June is currently the most expensive (average of $358). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

In terms of precipitation, rainfall in San Francisco ranges from 0.0 - 4.4 inches per month. January is typically the wettest month, when rainfall can reach 4.4 in. July is typically the driest time to visit San Francisco when rainfall is around 0.0 in.

If weather is an important factor for your trip to San Francisco, use this chart to help with planning. For those seeking warmer temperatures, September is the ideal time of year to visit, when temperatures reach an average of 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 51.8 F).

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

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

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

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

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

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

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

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

$755+ Flights from Kumamoto to San Francisco

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Cheap flight deals from Kumamoto to San Francisco

Round-trip from	$755 (Trip.com)

From Kumamoto to San Francisco

Search Deals

Find flight deals from Kumamoto to San Francisco

Cheapest flights from Kumamoto to San Francisco
Explore the most affordable flight options available from Kumamoto to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 30, 2025.

Fri 9/1210:25 amKMJ - SFO

1 stop18h 35mMultiple Airlines

Fri 9/193:30 pmSFO - KMJ

1 stop25h 55mMultiple Airlines

Deal found 7/29

$755

Wed 10/811:55 amKMJ - SFO

1 stop24h 35mSTARLUX Airlines

Wed 12/311:10 pmSFO - KMJ

1 stop18h 25mSTARLUX Airlines

Deal found 7/28

$888

Fri 9/126:40 pmKMJ - SFO

1 stop17h 50mChina Airlines

Fri 9/198:59 pmSFO - KMJ

2 stops28h 41mChina Airlines

Deal found 7/29

$1,152

Wed 10/89:55 amKMJ - SFO

1 stop17h 25mJapan Airlines

Wed 12/36:45 amSFO - KMJ

2 stops20h 00mJapan Airlines

Deal found 7/28

$1,674

Wed 10/85:25 pmKMJ - SFO

1 stop15h 05mANA

Tue 12/212:20 amSFO - KMJ

1 stop16h 55mANA

Deal found 7/28

$1,893

Best flights from Kumamoto to San Francisco
Discover carefully curated flight deals from Kumamoto to San Francisco that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 30, 2025.

Fri 9/1210:25 amKMJ - SFO

1 stop18h 35mMultiple Airlines

Fri 9/193:30 pmSFO - KMJ

1 stop25h 55mMultiple Airlines

Deal found 7/29

$755

Wed 10/811:55 amKMJ - SFO

1 stop24h 35mSTARLUX Airlines

Wed 12/311:10 pmSFO - KMJ

1 stop18h 25mSTARLUX Airlines

Deal found 7/28

$888

Fri 9/126:40 pmKMJ - SFO

1 stop17h 50mChina Airlines

Fri 9/198:59 pmSFO - KMJ

2 stops28h 41mChina Airlines

Deal found 7/29

$1,152

Wed 10/89:55 amKMJ - SFO

1 stop17h 25mJapan Airlines

Wed 12/36:45 amSFO - KMJ

2 stops20h 00mJapan Airlines

Deal found 7/28

$1,674

Wed 10/85:25 pmKMJ - SFO

1 stop15h 05mANA

Tue 12/212:20 amSFO - KMJ

1 stop16h 55mANA

Deal found 7/28

$1,893

One-way flights from Kumamoto to San Francisco
Search for one-way flight options from Kumamoto to San Francisco. Find affordable one-way fares based on user searches. Data last updated July 30, 2025.

Sat 8/92:00 pmKMJ - SFO

2 stops22h 28mAsiana Airlines

Deal found 7/30

$873

Sat 8/911:55 amKMJ - SFO

1 stop25h 05mSTARLUX Airlines

Deal found 7/30

$949

Fri 8/153:20 pmKMJ - SFO

2 stops38h 15mMultiple Airlines

Deal found 7/30

$1,563

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

KumamotoSan Francisco

KMJ - SFO

KMJSFO

Kumamoto

Fri 9/12

10:25 am-1:00 pm

1 stop18h 35m

San Francisco

Fri 9/19

3:30 pm-9:25 am

1 stop25h 55m

$755

KumamotoSan Francisco

KMJ - SFO

KMJSFO

Kumamoto

Wed 10/8

11:55 am-8:30 pm

1 stop24h 35m

San Francisco

Wed 12/3

11:10 pm-10:35 am

1 stop18h 25m

$888

KumamotoSan Francisco

KMJ - SFO

KMJSFO

Kumamoto

Fri 9/12

6:40 pm-8:30 pm

1 stop17h 50m

San Francisco

Fri 9/19

8:59 pm-5:40 pm

2 stops28h 41m

$1,152

KumamotoSan Francisco

KMJ - SFO

KMJSFO

Kumamoto

Wed 10/8

9:55 am-11:20 am

1 stop17h 25m

San Francisco

Wed 12/3

6:45 am-7:45 pm

2 stops20h 00m

$1,674

KumamotoSan Francisco

KMJ - SFO

KMJSFO

Kumamoto

Wed 10/8

5:25 pm-4:30 pm

1 stop15h 05m

San Francisco

Tue 12/2

12:20 am-10:15 am

1 stop16h 55m

$1,893

KumamotoSan Francisco

KMJ - SFO

KMJSFO

Kumamoto

Sat 8/9

2:00 pm-8:28 pm

2 stops22h 28m

$873

KumamotoSan Francisco

KMJ - SFO

KMJSFO

Kumamoto

Sat 8/9

11:55 am-9:00 pm

1 stop25h 05m

$949

KumamotoSan Francisco

KMJ - SFO

KMJSFO

Kumamoto

Fri 8/15

3:20 pm-1:35 pm

2 stops38h 15m

$1,563

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

Best time to book a flight from Kumamoto to San Francisco

Have a flexible travel schedule? Discover the best time to fly to San Francisco from Kumamoto 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 San Francisco

Get a feel of what it's like to fly with STARLUX Airlines, ANA, and Japan Airlines from Kumamoto to San Francisco by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

STARLUX Airlines

9.0

Wonderful

199 reviews

Reviews

1 / 7

10.0

Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.

STARLUX Airlines

9.0

Wonderful

199 reviews

STARLUX Airlines

9.0

Wonderful

199 reviews

Reviews

1 / 7

10.0

Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.

ANA

8.4

Very good

922 reviews

STARLUX Airlines

9.0

Wonderful

199 reviews

Reviews

1 / 7

10.0

Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.

Japan Airlines

8.3

Very good

1,536 reviews

STARLUX Airlines

9.0

Wonderful

199 reviews

Reviews

1 / 7

10.0

Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.

China Airlines

8.3

Very good

754 reviews

STARLUX Airlines

9.0

Wonderful

199 reviews

Reviews

1 / 7

10.0

Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.

Asiana Airlines

8.2

Very good

467 reviews

STARLUX Airlines

9.0

Wonderful

199 reviews

Reviews

1 / 7

10.0

Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.

Related info for your journey

Can I find deals for flights from Kumamoto to San Francisco that include hotel bookings?
Yes. In addition to deals on Kumamoto to San Francisco flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Kumamoto to San Francisco?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Kumamoto to San Francisco.
Can I find deals for business class flights from Kumamoto to San Francisco?
Yes. Cheapflights offers flight deals from Kumamoto to San Francisco by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
What is the cheapest month to book a flight from Kumamoto to San Francisco?
Currently, January is the cheapest month in which you can book a flight from Kumamoto to San Francisco (average of $276). Flying from Kumamoto to San Francisco in June is currently the most expensive (average of $358). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Roseville

Mountain View

Santa Cruz

South San Francisco

Livermore

Turlock

Manteca

Antioch

Hollister

Watsonville

Sunnyvale

Newark

Milpitas

Campbell

Foster City

Capitola

Santa Clara

San Leandro

Burlingame

Redwood City

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$755+ Cheap flights from Kumamoto (KMJ) to San Francisco (SFO)

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 9/12. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Kumamoto to San Francisco with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Kumamoto to San Francisco

Round-trip from

Find flight deals from Kumamoto to San Francisco

Cheapest flights from Kumamoto to San FranciscoExplore the most affordable flight options available from Kumamoto to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 30, 2025.

Explore the most affordable flight options available from Kumamoto to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 30, 2025.

Cheapflights Fare Finder

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

Best time to book a flight from Kumamoto to San Francisco

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

Reviews of airlines servicing San Francisco

Get a feel of what it's like to fly with STARLUX Airlines, ANA, and Japan Airlines from Kumamoto to San Francisco by reading reviews from past customers. Users have also rated airlines 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 Kumamoto to San Francisco. 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 Kumamoto to San Francisco that include hotel bookings?

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

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

What is the cheapest month to book a flight from Kumamoto to San Francisco?

Traveling to a place near San Francisco?

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Kumamoto to San Francisco

See prices for flight routes from nearby airports that may be better suited for you.

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Book with Flexibility

Travel Smart

Cheapest flights from Kumamoto to San Francisco
Explore the most affordable flight options available from Kumamoto to San Francisco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 30, 2025.